/* $OpenBSD: softraid.c,v 1.54 2007/05/29 16:36:35 marco Exp $ */ /* * Copyright (c) 2007 Marco Peereboom * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include "bio.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* #define SR_FANCY_STATS */ #ifdef SR_DEBUG uint32_t sr_debug = 0 /* | SR_D_CMD */ /* | SR_D_MISC */ /* | SR_D_INTR */ /* | SR_D_IOCTL */ /* | SR_D_CCB */ /* | SR_D_WU */ /* | SR_D_META */ /* | SR_D_DIS */ /* | SR_D_STATE */ ; #endif int sr_match(struct device *, void *, void *); void sr_attach(struct device *, struct device *, void *); int sr_detach(struct device *, int); int sr_activate(struct device *, enum devact); struct cfattach softraid_ca = { sizeof(struct sr_softc), sr_match, sr_attach, sr_detach, sr_activate }; struct cfdriver softraid_cd = { NULL, "softraid", DV_DULL }; int sr_scsi_cmd(struct scsi_xfer *); void sr_minphys(struct buf *bp); void sr_copy_internal_data(struct scsi_xfer *, void *, size_t); int sr_scsi_ioctl(struct scsi_link *, u_long, caddr_t, int, struct proc *); int sr_ioctl(struct device *, u_long, caddr_t); int sr_ioctl_inq(struct sr_softc *, struct bioc_inq *); int sr_ioctl_vol(struct sr_softc *, struct bioc_vol *); int sr_ioctl_disk(struct sr_softc *, struct bioc_disk *); int sr_ioctl_setstate(struct sr_softc *, struct bioc_setstate *); int sr_ioctl_createraid(struct sr_softc *, struct bioc_createraid *, int); int sr_open_chunks(struct sr_softc *, struct sr_chunk_head *, dev_t *, int); int sr_read_meta(struct sr_discipline *); int sr_create_chunk_meta(struct sr_softc *, struct sr_chunk_head *); void sr_unwind_chunks(struct sr_softc *, struct sr_chunk_head *); void sr_free_discipline(struct sr_discipline *); /* work units & ccbs */ int sr_alloc_ccb(struct sr_discipline *); void sr_free_ccb(struct sr_discipline *); struct sr_ccb *sr_get_ccb(struct sr_discipline *); void sr_put_ccb(struct sr_ccb *); int sr_alloc_wu(struct sr_discipline *); void sr_free_wu(struct sr_discipline *); struct sr_workunit *sr_get_wu(struct sr_discipline *); void sr_put_wu(struct sr_workunit *); /* discipline functions */ int sr_raid1_alloc_resources(struct sr_discipline *); int sr_raid1_free_resources(struct sr_discipline *); int sr_raid1_rw(struct sr_workunit *); int sr_raid1_inquiry(struct sr_workunit *); int sr_raid1_read_cap(struct sr_workunit *); int sr_raid1_tur(struct sr_workunit *); int sr_raid1_request_sense( struct sr_workunit *); int sr_raid1_start_stop(struct sr_workunit *); int sr_raid1_sync(struct sr_workunit *); void sr_raid1_intr(struct buf *); void sr_raid1_set_chunk_state(struct sr_discipline *, int, int); void sr_raid1_set_vol_state(struct sr_discipline *); void sr_raid1_startwu(struct sr_workunit *); /* utility functions */ void sr_get_uuid(struct sr_uuid *); void sr_print_uuid(struct sr_uuid *, int); u_int32_t sr_checksum(char *, u_int32_t *, u_int32_t); int sr_clear_metadata(struct sr_discipline *); int sr_save_metadata(struct sr_discipline *); void sr_refresh_sensors(void *); int sr_create_sensors(struct sr_discipline *); int sr_boot_assembly(struct sr_softc *); int sr_already_assembled(struct sr_discipline *); int sr_validate_metadata(struct sr_softc *, dev_t, struct sr_metadata *); #ifdef SR_DEBUG void sr_print_metadata(struct sr_metadata *); #else #define sr_print_metadata(m) #endif struct scsi_adapter sr_switch = { sr_scsi_cmd, sr_minphys, NULL, NULL, sr_scsi_ioctl }; struct scsi_device sr_dev = { NULL, NULL, NULL, NULL }; int sr_match(struct device *parent, void *match, void *aux) { return (1); } void sr_attach(struct device *parent, struct device *self, void *aux) { struct sr_softc *sc = (void *)self; DNPRINTF(SR_D_MISC, "\n%s: sr_attach", DEVNAME(sc)); rw_init(&sc->sc_lock, "sr_lock"); if (bio_register(&sc->sc_dev, sr_ioctl) != 0) printf("%s: controller registration failed", DEVNAME(sc)); else sc->sc_ioctl = sr_ioctl; printf("\n"); sr_boot_assembly(sc); } int sr_detach(struct device *self, int flags) { return (0); } int sr_activate(struct device *self, enum devact act) { return (1); } void sr_minphys(struct buf *bp) { DNPRINTF(SR_D_MISC, "sr_minphys: %d\n", bp->b_bcount); /* XXX currently using SR_MAXFER = MAXPHYS */ if (bp->b_bcount > SR_MAXFER) bp->b_bcount = SR_MAXFER; minphys(bp); } void sr_copy_internal_data(struct scsi_xfer *xs, void *v, size_t size) { size_t copy_cnt; DNPRINTF(SR_D_MISC, "sr_copy_internal_data xs: %p size: %d\n", xs, size); if (xs->datalen) { copy_cnt = MIN(size, xs->datalen); bcopy(v, xs->data, copy_cnt); } } int sr_alloc_ccb(struct sr_discipline *sd) { struct sr_ccb *ccb; int i; if (!sd) return (1); DNPRINTF(SR_D_CCB, "%s: sr_alloc_ccb\n", DEVNAME(sd->sd_sc)); if (sd->sd_ccb) return (1); sd->sd_ccb = malloc(sizeof(struct sr_ccb) * sd->sd_max_wu * sd->sd_max_ccb_per_wu, M_DEVBUF, M_WAITOK); memset(sd->sd_ccb, 0, sizeof(struct sr_ccb) * sd->sd_max_wu * sd->sd_max_ccb_per_wu); TAILQ_INIT(&sd->sd_ccb_freeq); for (i = 0; i < sd->sd_max_wu * sd->sd_max_ccb_per_wu; i++) { ccb = &sd->sd_ccb[i]; ccb->ccb_dis = sd; sr_put_ccb(ccb); } DNPRINTF(SR_D_CCB, "%s: sr_alloc_ccb ccb: %d\n", DEVNAME(sd->sd_sc), sd->sd_max_wu * sd->sd_max_ccb_per_wu); return (0); } void sr_free_ccb(struct sr_discipline *sd) { struct sr_ccb *ccb; if (!sd) return; DNPRINTF(SR_D_CCB, "%s: sr_free_ccb %p\n", DEVNAME(sd->sd_sc), sd); while ((ccb = TAILQ_FIRST(&sd->sd_ccb_freeq)) != NULL) TAILQ_REMOVE(&sd->sd_ccb_freeq, ccb, ccb_link); if (sd->sd_ccb) free(sd->sd_ccb, M_DEVBUF); } struct sr_ccb * sr_get_ccb(struct sr_discipline *sd) { struct sr_ccb *ccb; int s; s = splbio(); ccb = TAILQ_FIRST(&sd->sd_ccb_freeq); if (ccb) { TAILQ_REMOVE(&sd->sd_ccb_freeq, ccb, ccb_link); ccb->ccb_state = SR_CCB_INPROGRESS; } splx(s); DNPRINTF(SR_D_CCB, "%s: sr_get_ccb: %p\n", DEVNAME(sd->sd_sc), ccb); return (ccb); } void sr_put_ccb(struct sr_ccb *ccb) { struct sr_discipline *sd = ccb->ccb_dis; int s; DNPRINTF(SR_D_CCB, "%s: sr_put_ccb: %p\n", DEVNAME(sd->sd_sc), ccb); s = splbio(); ccb->ccb_wu = NULL; ccb->ccb_state = SR_CCB_FREE; ccb->ccb_target = -1; TAILQ_INSERT_TAIL(&sd->sd_ccb_freeq, ccb, ccb_link); splx(s); } int sr_alloc_wu(struct sr_discipline *sd) { struct sr_workunit *wu; int i, no_wu; if (!sd) return (1); DNPRINTF(SR_D_WU, "%s: sr_alloc_wu %p %d\n", DEVNAME(sd->sd_sc), sd, sd->sd_max_wu); if (sd->sd_wu) return (1); no_wu = sd->sd_max_wu; sd->sd_wu_pending = no_wu; sd->sd_wu = malloc(sizeof(struct sr_workunit) * no_wu, M_DEVBUF, M_WAITOK); memset(sd->sd_wu, 0, sizeof(struct sr_workunit) * no_wu); TAILQ_INIT(&sd->sd_wu_freeq); TAILQ_INIT(&sd->sd_wu_pendq); TAILQ_INIT(&sd->sd_wu_defq); for (i = 0; i < no_wu; i++) { wu = &sd->sd_wu[i]; wu->swu_dis = sd; sr_put_wu(wu); } return (0); } void sr_free_wu(struct sr_discipline *sd) { struct sr_workunit *wu; if (!sd) return; DNPRINTF(SR_D_WU, "%s: sr_free_wu %p\n", DEVNAME(sd->sd_sc), sd); while ((wu = TAILQ_FIRST(&sd->sd_wu_freeq)) != NULL) TAILQ_REMOVE(&sd->sd_wu_freeq, wu, swu_link); while ((wu = TAILQ_FIRST(&sd->sd_wu_pendq)) != NULL) TAILQ_REMOVE(&sd->sd_wu_pendq, wu, swu_link); while ((wu = TAILQ_FIRST(&sd->sd_wu_defq)) != NULL) TAILQ_REMOVE(&sd->sd_wu_defq, wu, swu_link); if (sd->sd_wu) free(sd->sd_wu, M_DEVBUF); } void sr_put_wu(struct sr_workunit *wu) { struct sr_discipline *sd = wu->swu_dis; struct sr_ccb *ccb; int s; DNPRINTF(SR_D_WU, "%s: sr_put_wu: %p\n", DEVNAME(sd->sd_sc), wu); s = splbio(); wu->swu_xs = NULL; wu->swu_state = SR_WU_FREE; wu->swu_ios_complete = 0; wu->swu_ios_failed = 0; wu->swu_ios_succeeded = 0; wu->swu_io_count = 0; wu->swu_blk_start = 0; wu->swu_blk_end = 0; wu->swu_collider = NULL; while ((ccb = TAILQ_FIRST(&wu->swu_ccb)) != NULL) { TAILQ_REMOVE(&wu->swu_ccb, ccb, ccb_link); sr_put_ccb(ccb); } TAILQ_INIT(&wu->swu_ccb); TAILQ_INSERT_TAIL(&sd->sd_wu_freeq, wu, swu_link); sd->sd_wu_pending--; splx(s); } struct sr_workunit * sr_get_wu(struct sr_discipline *sd) { struct sr_workunit *wu; int s; s = splbio(); wu = TAILQ_FIRST(&sd->sd_wu_freeq); if (wu) { TAILQ_REMOVE(&sd->sd_wu_freeq, wu, swu_link); wu->swu_state = SR_WU_INPROGRESS; } sd->sd_wu_pending++; splx(s); DNPRINTF(SR_D_WU, "%s: sr_get_wu: %p\n", DEVNAME(sd->sd_sc), wu); return (wu); } int sr_scsi_cmd(struct scsi_xfer *xs) { int s; struct scsi_link *link = xs->sc_link; struct sr_softc *sc = link->adapter_softc; struct sr_workunit *wu; struct sr_discipline *sd; DNPRINTF(SR_D_CMD, "%s: sr_scsi_cmd: scsibus: %d xs: %p " "flags: %#x\n", DEVNAME(sc), link->scsibus, xs, xs->flags); sd = sc->sc_dis[link->scsibus]; if (sd == NULL) { s = splhigh(); sd = sc->sc_attach_dis; splx(s); DNPRINTF(SR_D_CMD, "%s: sr_scsi_cmd: attaching %p\n", DEVNAME(sc), sd); if (sd == NULL) { wu = NULL; printf("%s: sr_scsi_cmd NULL discipline\n", DEVNAME(sc)); goto stuffup; } } if ((wu = sr_get_wu(sd)) == NULL) { DNPRINTF(SR_D_CMD, "%s: sr_scsi_cmd no wu\n", DEVNAME(sc)); return (TRY_AGAIN_LATER); } xs->error = XS_NOERROR; wu->swu_xs = xs; /* if we have sense data let the midlayer know */ if (sd->sd_scsi_sense.flags != SKEY_NO_SENSE && (!(xs->cmd->opcode == REQUEST_SENSE || xs->cmd->opcode == INQUIRY))) { DNPRINTF(SR_D_CMD, "%s: sr_scsi_cmd opcode 0x%02x sense " "0x%02x 0x%02x\n", DEVNAME(sc), xs->cmd->opcode, sd->sd_scsi_sense.add_sense_code, sd->sd_scsi_sense.add_sense_code_qual); xs->error = XS_SENSE; xs->flags |= ITSDONE; goto complete; } switch (xs->cmd->opcode) { case READ_COMMAND: case READ_BIG: case WRITE_COMMAND: case WRITE_BIG: DNPRINTF(SR_D_CMD, "%s: sr_scsi_cmd: READ/WRITE %02x\n", DEVNAME(sc), xs->cmd->opcode); if (sd->sd_scsi_rw(wu)) goto stuffup; break; case SYNCHRONIZE_CACHE: DNPRINTF(SR_D_CMD, "%s: sr_scsi_cmd: SYNCHRONIZE_CACHE\n", DEVNAME(sc)); if (sd->sd_scsi_sync(wu)) goto stuffup; goto complete; case TEST_UNIT_READY: DNPRINTF(SR_D_CMD, "%s: sr_scsi_cmd: TEST_UNIT_READY\n", DEVNAME(sc)); if (sd->sd_scsi_tur(wu)) goto stuffup; goto complete; case START_STOP: DNPRINTF(SR_D_CMD, "%s: sr_scsi_cmd: START_STOP\n", DEVNAME(sc)); if (sd->sd_scsi_start_stop(wu)) goto stuffup; goto complete; case INQUIRY: DNPRINTF(SR_D_CMD, "%s: sr_scsi_cmd: INQUIRY\n", DEVNAME(sc)); if (sd->sd_scsi_inquiry(wu)) goto stuffup; goto complete; case READ_CAPACITY: DNPRINTF(SR_D_CMD, "%s: sr_scsi_cmd READ CAPACITY\n", DEVNAME(sc)); if (sd->sd_scsi_read_cap(wu)) goto stuffup; goto complete; case REQUEST_SENSE: DNPRINTF(SR_D_CMD, "%s: sr_scsi_cmd REQUEST SENSE\n", DEVNAME(sc)); if (sd->sd_scsi_req_sense(wu)) goto stuffup; goto complete; default: DNPRINTF(SR_D_CMD, "%s: unsupported scsi command %x\n", DEVNAME(sc), xs->cmd->opcode); /* XXX might need to add generic function to handle others */ goto stuffup; } return (SUCCESSFULLY_QUEUED); stuffup: xs->error = XS_DRIVER_STUFFUP; xs->flags |= ITSDONE; complete: s = splbio(); scsi_done(xs); splx(s); if (wu) sr_put_wu(wu); return (COMPLETE); } int sr_scsi_ioctl(struct scsi_link *link, u_long cmd, caddr_t addr, int flag, struct proc *p) { DNPRINTF(SR_D_IOCTL, "%s: sr_scsi_ioctl cmd: %#x\n", DEVNAME((struct sr_softc *)link->adapter_softc), cmd); return (sr_ioctl(link->adapter_softc, cmd, addr)); } int sr_ioctl(struct device *dev, u_long cmd, caddr_t addr) { struct sr_softc *sc = (struct sr_softc *)dev; int rv = 0; DNPRINTF(SR_D_IOCTL, "%s: sr_ioctl ", DEVNAME(sc)); rw_enter_write(&sc->sc_lock); switch (cmd) { case BIOCINQ: DNPRINTF(SR_D_IOCTL, "inq\n"); rv = sr_ioctl_inq(sc, (struct bioc_inq *)addr); break; case BIOCVOL: DNPRINTF(SR_D_IOCTL, "vol\n"); rv = sr_ioctl_vol(sc, (struct bioc_vol *)addr); break; case BIOCDISK: DNPRINTF(SR_D_IOCTL, "disk\n"); rv = sr_ioctl_disk(sc, (struct bioc_disk *)addr); break; case BIOCALARM: DNPRINTF(SR_D_IOCTL, "alarm\n"); /*rv = sr_ioctl_alarm(sc, (struct bioc_alarm *)addr); */ break; case BIOCBLINK: DNPRINTF(SR_D_IOCTL, "blink\n"); /*rv = sr_ioctl_blink(sc, (struct bioc_blink *)addr); */ break; case BIOCSETSTATE: DNPRINTF(SR_D_IOCTL, "setstate\n"); rv = sr_ioctl_setstate(sc, (struct bioc_setstate *)addr); break; case BIOCCREATERAID: DNPRINTF(SR_D_IOCTL, "createraid\n"); rv = sr_ioctl_createraid(sc, (struct bioc_createraid *)addr, 1); break; default: DNPRINTF(SR_D_IOCTL, "invalid ioctl\n"); rv = EINVAL; } rw_exit_write(&sc->sc_lock); return (rv); } int sr_ioctl_inq(struct sr_softc *sc, struct bioc_inq *bi) { int i, vol, disk; for (i = 0, vol = 0, disk = 0; i < SR_MAXSCSIBUS; i++) /* XXX this will not work when we stagger disciplines */ if (sc->sc_dis[i]) { vol++; disk += sc->sc_dis[i]->sd_vol.sv_meta.svm_no_chunk; } strlcpy(bi->bi_dev, sc->sc_dev.dv_xname, sizeof(bi->bi_dev)); bi->bi_novol = vol; bi->bi_nodisk = disk; return (0); } int sr_ioctl_vol(struct sr_softc *sc, struct bioc_vol *bv) { int i, vol, rv = EINVAL; struct sr_volume *sv; for (i = 0, vol = -1; i < SR_MAXSCSIBUS; i++) { /* XXX this will not work when we stagger disciplines */ if (sc->sc_dis[i]) vol++; if (vol != bv->bv_volid) continue; sv = &sc->sc_dis[i]->sd_vol; bv->bv_status = sv->sv_meta.svm_status; bv->bv_size = sv->sv_meta.svm_size; bv->bv_level = sv->sv_meta.svm_level; bv->bv_nodisk = sv->sv_meta.svm_no_chunk; strlcpy(bv->bv_dev, sv->sv_meta.svm_devname, sizeof(bv->bv_dev)); strlcpy(bv->bv_vendor, sv->sv_meta.svm_vendor, sizeof(bv->bv_vendor)); rv = 0; break; } return (rv); } int sr_ioctl_disk(struct sr_softc *sc, struct bioc_disk *bd) { int i, vol, rv = EINVAL, id; struct sr_chunk *src; for (i = 0, vol = -1; i < SR_MAXSCSIBUS; i++) { /* XXX this will not work when we stagger disciplines */ if (sc->sc_dis[i]) vol++; if (vol != bd->bd_volid) continue; id = bd->bd_diskid; if (id >= sc->sc_dis[i]->sd_vol.sv_meta.svm_no_chunk) break; src = sc->sc_dis[i]->sd_vol.sv_chunks[id]; bd->bd_status = src->src_meta.scm_status; bd->bd_size = src->src_meta.scm_size; bd->bd_channel = vol; bd->bd_target = id; strlcpy(bd->bd_vendor, src->src_meta.scm_devname, sizeof(bd->bd_vendor)); rv = 0; break; } return (rv); } int sr_ioctl_setstate(struct sr_softc *sc, struct bioc_setstate *bs) { int rv = EINVAL; #ifdef SR_UNIT_TEST int i, vol, state; struct sr_discipline *sd; for (i = 0, vol = -1; i < SR_MAXSCSIBUS; i++) { /* XXX this will not work when we stagger disciplines */ if (sc->sc_dis[i]) vol++; if (vol != bs->bs_channel) continue; sd = sc->sc_dis[vol]; if (bs->bs_target >= sd->sd_vol.sv_meta.svm_no_chunk) goto done; switch (bs->bs_status) { case BIOC_SSONLINE: state = BIOC_SDONLINE; break; case BIOC_SSOFFLINE: state = BIOC_SDOFFLINE; break; case BIOC_SSHOTSPARE: state = BIOC_SDHOTSPARE; break; case BIOC_SSREBUILD: state = BIOC_SDREBUILD; break; default: printf("invalid state %d\n", bs->bs_status); goto done; } printf("status change for %u:%u -> %u %u\n", bs->bs_channel, bs->bs_target, bs->bs_status, state); sd->sd_set_chunk_state(sd, bs->bs_target, bs->bs_status); rv = 0; break; } done: #endif return (rv); } int sr_ioctl_createraid(struct sr_softc *sc, struct bioc_createraid *bc, int user) { dev_t *dt; int i, s, no_chunk, rv = EINVAL, sb = -1, vol; int no_meta, updatemeta = 0; u_quad_t vol_size; u_int32_t sense; struct sr_chunk_head *cl; struct sr_discipline *sd = NULL; struct sr_chunk *ch_entry; struct device *dev, *dev2; struct scsibus_attach_args saa; DNPRINTF(SR_D_IOCTL, "%s: sr_ioctl_createraid(%d)\n", DEVNAME(sc), user); /* user input */ if (bc->bc_dev_list_len > BIOC_CRMAXLEN) goto unwind; dt = malloc(bc->bc_dev_list_len, M_DEVBUF, M_WAITOK); bzero(dt, bc->bc_dev_list_len); if (user) copyin(bc->bc_dev_list, dt, bc->bc_dev_list_len); else bcopy(bc->bc_dev_list, dt, bc->bc_dev_list_len); sd = malloc(sizeof(struct sr_discipline), M_DEVBUF, M_WAITOK); memset(sd, 0, sizeof(struct sr_discipline)); sd->sd_sc = sc; no_chunk = bc->bc_dev_list_len / sizeof(dev_t); cl = &sd->sd_vol.sv_chunk_list; SLIST_INIT(cl); if (sr_open_chunks(sc, cl, dt, no_chunk)) goto unwind; /* in memory copy of metadata */ sd->sd_meta = malloc(SR_META_SIZE * 512 , M_DEVBUF, M_WAITOK); bzero(sd->sd_meta, SR_META_SIZE * 512); /* we have a valid list now create an array index */ sd->sd_vol.sv_chunks = malloc(sizeof(struct sr_chunk *) * no_chunk, M_DEVBUF, M_WAITOK); bzero(sd->sd_vol.sv_chunks, sizeof(struct sr_chunk *) * no_chunk); /* force the raid volume by clearing metadata region */ if (bc->bc_flags & BIOC_SCFORCE) { /* make sure disk isn't up and running */ if (sr_read_meta(sd)) if (sr_already_assembled(sd)) { printf("%s: disk ", DEVNAME(sc)); sr_print_uuid(&sd->sd_meta->ssd_uuid, 0); printf(" is currently in use; can't force " "create\n"); goto unwind; } /* zero out pointers and metadata again to create disk */ bzero(sd->sd_vol.sv_chunks, sizeof(struct sr_chunk *) * no_chunk); bzero(sd->sd_meta, SR_META_SIZE * 512); if (sr_clear_metadata(sd)) { printf("%s: failed to clear metadata\n"); goto unwind; } } if ((no_meta = sr_read_meta(sd)) == 0) { /* no metadata available */ switch (bc->bc_level) { case 1: if (no_chunk < 2) goto unwind; strlcpy(sd->sd_name, "RAID 1", sizeof(sd->sd_name)); break; default: goto unwind; } /* fill out chunk array */ i = 0; SLIST_FOREACH(ch_entry, cl, src_link) sd->sd_vol.sv_chunks[i++] = ch_entry; /* fill out all chunk metadata */ sr_create_chunk_meta(sc, cl); /* fill out all volume metadata */ ch_entry = SLIST_FIRST(cl); vol_size = ch_entry->src_meta.scm_coerced_size; DNPRINTF(SR_D_IOCTL, "%s: sr_ioctl_createraid: vol_size: %llu\n" , DEVNAME(sc), vol_size); sd->sd_vol.sv_meta.svm_no_chunk = no_chunk; sd->sd_vol.sv_meta.svm_size = vol_size; sd->sd_vol.sv_meta.svm_status = BIOC_SVONLINE; sd->sd_vol.sv_meta.svm_level = bc->bc_level; strlcpy(sd->sd_vol.sv_meta.svm_vendor, "OPENBSD", sizeof(sd->sd_vol.sv_meta.svm_vendor)); snprintf(sd->sd_vol.sv_meta.svm_product, sizeof(sd->sd_vol.sv_meta.svm_product), "SR %s", sd->sd_name); snprintf(sd->sd_vol.sv_meta.svm_revision, sizeof(sd->sd_vol.sv_meta.svm_revision), "%03d", SR_META_VERSION); sd->sd_meta_flags = bc->bc_flags & BIOC_SCNOAUTOASSEMBLE; updatemeta = 1; } else if (no_meta == no_chunk) { if (user == 0 && sd->sd_meta_flags & BIOC_SCNOAUTOASSEMBLE) { DNPRINTF(SR_D_META, "%s: disk not auto assembled from " "metadata\n", DEVNAME(sc)); goto unwind; } if (sr_already_assembled(sd)) { printf("%s: disk ", DEVNAME(sc)); sr_print_uuid(&sd->sd_meta->ssd_uuid, 0); printf(" already assembled\n"); goto unwind; } DNPRINTF(SR_D_META, "%s: disk assembled from metadata\n", DEVNAME(sc)); updatemeta = 0; } else { if (sr_already_assembled(sd)) { printf("%s: disk ", DEVNAME(sc)); sr_print_uuid(&sd->sd_meta->ssd_uuid, 0); printf(" already assembled; will not partial " "assemble it\n"); goto unwind; } panic("not yet partial bringup"); } /* XXX metadata SHALL be fully filled in at this point */ switch (bc->bc_level) { case 1: /* fill out discipline members */ sd->sd_type = SR_MD_RAID1; sd->sd_max_ccb_per_wu = no_chunk; sd->sd_max_wu = SR_RAID1_NOWU; /* setup discipline pointers */ sd->sd_alloc_resources = sr_raid1_alloc_resources; sd->sd_free_resources = sr_raid1_free_resources; sd->sd_scsi_inquiry = sr_raid1_inquiry; sd->sd_scsi_read_cap = sr_raid1_read_cap; sd->sd_scsi_tur = sr_raid1_tur; sd->sd_scsi_req_sense = sr_raid1_request_sense; sd->sd_scsi_start_stop = sr_raid1_start_stop; sd->sd_scsi_sync = sr_raid1_sync; sd->sd_scsi_rw = sr_raid1_rw; sd->sd_set_chunk_state = sr_raid1_set_chunk_state; sd->sd_set_vol_state = sr_raid1_set_vol_state; break; default: goto unwind; } /* allocate all resources */ sd->sd_alloc_resources(sd); /* setup scsi midlayer */ sd->sd_link.openings = sd->sd_max_wu; sd->sd_link.device = &sr_dev; sd->sd_link.device_softc = sc; sd->sd_link.adapter_softc = sc; sd->sd_link.adapter = &sr_switch; sd->sd_link.adapter_target = SR_MAX_LD; sd->sd_link.adapter_buswidth = 1; bzero(&saa, sizeof(saa)); saa.saa_sc_link = &sd->sd_link; /* we passed all checks return ENXIO if volume can't be created */ rv = ENXIO; /* clear sense data */ bzero(&sd->sd_scsi_sense, sizeof(sd->sd_scsi_sense)); sd->sd_scsi_sense.error_code = SSD_ERRCODE_CURRENT; sd->sd_scsi_sense.segment = 0; sd->sd_scsi_sense.flags = SKEY_NO_SENSE; sense = htole32(0); bcopy(&sense, sd->sd_scsi_sense.info, sizeof(sense)); sd->sd_scsi_sense.extra_len = 0; /* use temporary discipline pointer */ s = splhigh(); sc->sc_attach_dis = sd; splx(s); dev2 = config_found(&sc->sc_dev, &saa, scsiprint); s = splhigh(); sc->sc_attach_dis = NULL; splx(s); TAILQ_FOREACH(dev, &alldevs, dv_list) if (dev->dv_parent == dev2) break; if (dev == NULL) goto unwind; DNPRINTF(SR_D_IOCTL, "%s: sr device added: %s on scsibus: %d\n", DEVNAME(sc), dev->dv_xname, sd->sd_link.scsibus); sc->sc_dis[sd->sd_link.scsibus] = sd; sb = sd->sd_link.scsibus; for (i = 0, vol = -1; i <= sd->sd_link.scsibus; i++) if (sc->sc_dis[i]) vol++; rv = 0; if (updatemeta) { /* fill out remaining volume metadata */ sd->sd_vol.sv_meta.svm_volid = vol; strlcpy(sd->sd_vol.sv_meta.svm_devname, dev->dv_xname, sizeof(sd->sd_vol.sv_meta.svm_devname)); rv = sr_save_metadata(sd); /* save metadata to disk */ } else { /* XXX compare scsibus & sdXX to metadata */ } if (sr_create_sensors(sd) != 0) printf("%s: unable to create sensor for %s\n", DEVNAME(sc), dev->dv_xname); return (rv); unwind: if (sb != -1) sc->sc_dis[sb] = NULL; /* XXX free scsibus */ if (sc && cl) sr_unwind_chunks(sc, cl); if (sd) sr_free_discipline(sd); return (rv); } int sr_open_chunks(struct sr_softc *sc, struct sr_chunk_head *cl, dev_t *dt, int no_chunk) { struct sr_chunk *ch_entry, *ch_prev = NULL; struct disklabel label; struct bdevsw *bdsw; char *name; int maj, unit, part, i, error; quad_t size; dev_t dev; DNPRINTF(SR_D_IOCTL, "%s: sr_open_chunks(%d)\n", DEVNAME(sc), no_chunk); /* fill out chunk list */ for (i = 0; i < no_chunk; i++) { ch_entry = malloc(sizeof(struct sr_chunk), M_DEVBUF, M_WAITOK); bzero(ch_entry, sizeof(struct sr_chunk)); /* keep disks in user supplied order */ if (ch_prev) SLIST_INSERT_AFTER(ch_prev, ch_entry, src_link); else SLIST_INSERT_HEAD(cl, ch_entry, src_link); ch_prev = ch_entry; dev = dt[i]; maj = major(dev); part = DISKPART(dev); unit = DISKUNIT(dev); bdsw = &bdevsw[maj]; name = findblkname(maj); if (name == NULL) goto unwind; snprintf(ch_entry->src_devname, sizeof(ch_entry->src_devname), "%s%d%c", name, unit, part + 'a'); name = ch_entry->src_devname; /* open device */ error = bdsw->d_open(dev, FREAD | FWRITE , S_IFBLK, curproc); /* get disklabel */ error = bdsw->d_ioctl(dev, DIOCGDINFO, (void *)&label, 0, NULL); if (error) { printf("%s: %s can't obtain disklabel\n", DEVNAME(sc), name); bdsw->d_close(dev, FWRITE, S_IFBLK, curproc); goto unwind; } /* make sure the partition is of the right type */ if (label.d_partitions[part].p_fstype != FS_RAID) { printf("%s: %s partition not of type RAID (%d)\n", DEVNAME(sc), name, label.d_partitions[part].p_fstype); bdsw->d_close(dev, FWRITE, S_IFBLK, curproc); goto unwind; } /* get partition size */ ch_entry->src_size = size = label.d_partitions[part].p_size - SR_META_SIZE - SR_META_OFFSET; if (size <= 0) { printf("%s: %s partition too small\n", DEVNAME(sc), name); bdsw->d_close(dev, FWRITE, S_IFBLK, curproc); goto unwind; } ch_entry->src_dev_mm = dev; /* major/minor */ DNPRINTF(SR_D_IOCTL, "%s: found %s size %d\n", DEVNAME(sc), name, size); } return (0); unwind: printf("%s: invalid device: %s\n", DEVNAME(sc), name ? name : "nodev"); return (1); } int sr_read_meta(struct sr_discipline *sd) { struct sr_softc *sc = sd->sd_sc; struct sr_chunk_head *cl = &sd->sd_vol.sv_chunk_list; struct sr_metadata *sm = sd->sd_meta, *m; struct sr_chunk *ch_entry; struct buf b; struct sr_vol_meta *mv; struct sr_chunk_meta *mc; size_t sz = SR_META_SIZE * 512; int no_chunk = 0; u_int32_t volid; DNPRINTF(SR_D_META, "%s: sr_read_meta\n", DEVNAME(sc)); m = malloc(sz , M_DEVBUF, M_WAITOK); bzero(m, sz); SLIST_FOREACH(ch_entry, cl, src_link) { bzero(&b, sizeof(b)); b.b_flags = B_READ; b.b_blkno = SR_META_OFFSET; b.b_bcount = sz; b.b_bufsize = sz; b.b_resid = sz; b.b_data = (void *)m; b.b_error = 0; b.b_proc = curproc; b.b_dev = ch_entry->src_dev_mm; b.b_vp = NULL; b.b_iodone = NULL; LIST_INIT(&b.b_dep); bdevsw_lookup(b.b_dev)->d_strategy(&b); biowait(&b); /* XXX mark chunk offline and restart metadata write */ if (b.b_flags & B_ERROR) { printf("%s: %s i/o error on block %d while reading " "metadata %d\n", DEVNAME(sc), ch_entry->src_devname, b.b_blkno, b.b_error); continue; } if (m->ssd_magic != SR_MAGIC) continue; /* validate metadata */ if (sr_validate_metadata(sc, ch_entry->src_dev_mm, m)) { printf("%s: invalid metadata\n", DEVNAME(sc)); no_chunk = -1; goto bad; } mv = (struct sr_vol_meta *)(m + 1); mc = (struct sr_chunk_meta *)(mv + 1); /* we asssume that the first chunk has the initial metadata */ if (no_chunk++ == 0) { bcopy(m, sm, sz); bcopy(m, sd->sd_meta, sizeof(*sd->sd_meta)); bcopy(mv, &sd->sd_vol.sv_meta, sizeof(sd->sd_vol.sv_meta)); volid = m->ssd_vd_volid; sd->sd_meta_flags = sm->ssd_flags; } if (bcmp(&sm->ssd_uuid, &sd->sd_vol.sv_meta.svm_uuid, sizeof(struct sr_uuid))) { printf("%s: %s invalid chunk uuid ", DEVNAME(sc), ch_entry->src_devname); sr_print_uuid(&sm->ssd_uuid, 0); printf(", expected "); sr_print_uuid(&sd->sd_vol.sv_meta.svm_uuid, 1); no_chunk = -1; goto bad; } /* we have meta data on disk */ ch_entry->src_meta_ondisk = 1; /* make sure we are part of this vd */ if (volid != m->ssd_vd_volid) { printf("%s: %s invalid volume id %d, expected %d\n", DEVNAME(sc), ch_entry->src_devname, volid, m->ssd_vd_volid); no_chunk = -1; goto bad; } if (m->ssd_chunk_id > m->ssd_chunk_no) { printf("%s: %s chunk id out of range %d, expected " "lower than %d\n", DEVNAME(sc), ch_entry->src_devname, m->ssd_chunk_id, m->ssd_chunk_no); no_chunk = -1; goto bad; } if (sd->sd_vol.sv_chunks[m->ssd_chunk_id]) { printf("%s: %s chunk id %d already in use\n ", DEVNAME(sc), ch_entry->src_devname, m->ssd_chunk_id); no_chunk = -1; goto bad; } sd->sd_vol.sv_chunks[m->ssd_chunk_id] = ch_entry; bcopy(mc + m->ssd_chunk_id, &ch_entry->src_meta, sizeof(ch_entry->src_meta)); } if (no_chunk != m->ssd_chunk_no) { DNPRINTF(SR_D_META, "%s: not enough chunks supplied\n", DEVNAME(sc)); no_chunk = -1; goto bad; } DNPRINTF(SR_D_META, "%s: sr_read_meta: found %d elements\n", DEVNAME(sc), no_chunk); sr_print_metadata(m); bad: /* return nr of chunks that contain metadata */ free(m, M_DEVBUF); return (no_chunk); } int sr_create_chunk_meta(struct sr_softc *sc, struct sr_chunk_head *cl) { struct sr_chunk *ch_entry; struct sr_uuid uuid; int rv = 1, cid = 0; char *name; u_quad_t max_chunk_sz = 0, min_chunk_sz; DNPRINTF(SR_D_IOCTL, "%s: sr_create_chunk_meta\n", DEVNAME(sc)); sr_get_uuid(&uuid); /* fill out stuff and get largest chunk size while looping */ SLIST_FOREACH(ch_entry, cl, src_link) { name = ch_entry->src_devname; ch_entry->src_meta.scm_size = ch_entry->src_size; ch_entry->src_meta.scm_chunk_id = cid++; ch_entry->src_meta.scm_status = BIOC_SDONLINE; strlcpy(ch_entry->src_meta.scm_devname, name, sizeof(ch_entry->src_meta.scm_devname)); bcopy(&uuid, &ch_entry->src_meta.scm_uuid, sizeof(ch_entry->src_meta.scm_uuid)); if (ch_entry->src_meta.scm_size > max_chunk_sz) max_chunk_sz = ch_entry->src_meta.scm_size; } /* get smallest chunk size */ min_chunk_sz = max_chunk_sz; SLIST_FOREACH(ch_entry, cl, src_link) if (ch_entry->src_meta.scm_size < min_chunk_sz) min_chunk_sz = ch_entry->src_meta.scm_size; /* equalize all sizes */ SLIST_FOREACH(ch_entry, cl, src_link) ch_entry->src_meta.scm_coerced_size = min_chunk_sz; /* whine if chunks are not the same size */ if (min_chunk_sz != max_chunk_sz) printf("%s: chunk sizes are not equal; up to %llu blocks " "wasted per chunk\n", DEVNAME(sc), max_chunk_sz - min_chunk_sz); rv = 0; return (rv); } void sr_unwind_chunks(struct sr_softc *sc, struct sr_chunk_head *cl) { struct sr_chunk *ch_entry, *ch_next; dev_t dev; DNPRINTF(SR_D_IOCTL, "%s: sr_unwind_chunks\n", DEVNAME(sc)); if (!cl) return; for (ch_entry = SLIST_FIRST(cl); ch_entry != SLIST_END(cl); ch_entry = ch_next) { ch_next = SLIST_NEXT(ch_entry, src_link); dev = ch_entry->src_dev_mm; if (dev != NODEV) bdevsw_lookup(dev)->d_close(dev, FWRITE, S_IFBLK, curproc); free(ch_entry, M_DEVBUF); } SLIST_INIT(cl); } void sr_free_discipline(struct sr_discipline *sd) { if (!sd) return; if (sd->sd_free_resources) sd->sd_free_resources(sd); if (sd->sd_vol.sv_chunks) free(sd->sd_vol.sv_chunks, M_DEVBUF); free(sd, M_DEVBUF); } /* RAID 1 functions */ int sr_raid1_alloc_resources(struct sr_discipline *sd) { int rv = EINVAL; if (!sd) return (rv); DNPRINTF(SR_D_DIS, "%s: sr_raid1_alloc_resources\n", DEVNAME(sd->sd_sc)); sr_alloc_wu(sd); sr_alloc_ccb(sd); rv = 0; return (rv); } int sr_raid1_free_resources(struct sr_discipline *sd) { int rv = EINVAL; if (!sd) return (rv); DNPRINTF(SR_D_DIS, "%s: sr_raid1_free_resources\n", DEVNAME(sd->sd_sc)); sr_free_wu(sd); sr_free_ccb(sd); if (sd->sd_meta) free(sd->sd_meta, M_DEVBUF); rv = 0; return (rv); } int sr_raid1_inquiry(struct sr_workunit *wu) { struct sr_discipline *sd = wu->swu_dis; struct scsi_xfer *xs = wu->swu_xs; struct scsi_inquiry_data inq; DNPRINTF(SR_D_DIS, "%s: sr_raid1_inquiry\n", DEVNAME(sd->sd_sc)); bzero(&inq, sizeof(inq)); inq.device = T_DIRECT; inq.dev_qual2 = 0; inq.version = 2; inq.response_format = 2; inq.additional_length = 32; strlcpy(inq.vendor, sd->sd_vol.sv_meta.svm_vendor, sizeof(inq.vendor)); strlcpy(inq.product, sd->sd_vol.sv_meta.svm_product, sizeof(inq.product)); strlcpy(inq.revision, sd->sd_vol.sv_meta.svm_revision, sizeof(inq.revision)); sr_copy_internal_data(xs, &inq, sizeof(inq)); return (0); } int sr_raid1_read_cap(struct sr_workunit *wu) { struct sr_discipline *sd = wu->swu_dis; struct scsi_xfer *xs = wu->swu_xs; struct scsi_read_cap_data rcd; DNPRINTF(SR_D_DIS, "%s: sr_raid1_read_cap\n", DEVNAME(sd->sd_sc)); bzero(&rcd, sizeof(rcd)); _lto4b(sd->sd_vol.sv_meta.svm_size, rcd.addr); _lto4b(512, rcd.length); sr_copy_internal_data(xs, &rcd, sizeof(rcd)); return (0); } int sr_raid1_tur(struct sr_workunit *wu) { struct sr_discipline *sd = wu->swu_dis; DNPRINTF(SR_D_DIS, "%s: sr_raid1_tur\n", DEVNAME(sd->sd_sc)); if (sd->sd_vol.sv_meta.svm_status == BIOC_SVOFFLINE) { sd->sd_scsi_sense.error_code = SSD_ERRCODE_CURRENT; sd->sd_scsi_sense.segment = 0; sd->sd_scsi_sense.flags = SKEY_NOT_READY; sd->sd_scsi_sense.add_sense_code = 0x04; sd->sd_scsi_sense.add_sense_code_qual = 0x11; *(u_int32_t*)sd->sd_scsi_sense.info = htole32(0); sd->sd_scsi_sense.extra_len = 0; return (1); } else if (sd->sd_vol.sv_meta.svm_status == BIOC_SVINVALID) { sd->sd_scsi_sense.error_code = SSD_ERRCODE_CURRENT; sd->sd_scsi_sense.segment = 0; sd->sd_scsi_sense.flags = SKEY_HARDWARE_ERROR; sd->sd_scsi_sense.add_sense_code = 0x05; sd->sd_scsi_sense.add_sense_code_qual = 0x00; *(u_int32_t*)sd->sd_scsi_sense.info = htole32(0); sd->sd_scsi_sense.extra_len = 0; return (1); } return (0); } int sr_raid1_request_sense(struct sr_workunit *wu) { struct sr_discipline *sd = wu->swu_dis; struct scsi_xfer *xs = wu->swu_xs; DNPRINTF(SR_D_DIS, "%s: sr_raid1_request_sense\n", DEVNAME(sd->sd_sc)); /* use latest sense data */ sr_copy_internal_data(xs, &sd->sd_scsi_sense, sizeof(sd->sd_scsi_sense)); /* clear sense data */ bzero(&sd->sd_scsi_sense, sizeof(sd->sd_scsi_sense)); sd->sd_scsi_sense.error_code = SSD_ERRCODE_CURRENT; sd->sd_scsi_sense.segment = 0; sd->sd_scsi_sense.flags = SKEY_NO_SENSE; *(u_int32_t*)sd->sd_scsi_sense.info = htole32(0); sd->sd_scsi_sense.extra_len = 0; return (0); } int sr_raid1_start_stop(struct sr_workunit *wu) { struct sr_discipline *sd = wu->swu_dis; struct scsi_xfer *xs = wu->swu_xs; struct scsi_start_stop *ss = (struct scsi_start_stop *)xs->cmd; int rv = 1; DNPRINTF(SR_D_DIS, "%s: sr_raid1_start_stop\n", DEVNAME(sd->sd_sc)); if (!ss) return (rv); if (ss->byte2 == 0x00) { /* START */ if (sd->sd_vol.sv_meta.svm_status == BIOC_SVOFFLINE) { /* bring volume online */ /* XXX check to see if volume can be brought online */ sd->sd_vol.sv_meta.svm_status = BIOC_SVONLINE; } rv = 0; } else /* XXX is this the check? if (byte == 0x01) */ { /* STOP */ if (sd->sd_vol.sv_meta.svm_status == BIOC_SVONLINE) { /* bring volume offline */ sd->sd_vol.sv_meta.svm_status = BIOC_SVOFFLINE; } rv = 0; } return (rv); } int sr_raid1_sync(struct sr_workunit *wu) { struct sr_discipline *sd = wu->swu_dis; int s, rv = 0; DNPRINTF(SR_D_DIS, "%s: sr_raid1_sync\n", DEVNAME(sd->sd_sc)); s = splbio(); sd->sd_sync = 1; while (sd->sd_wu_pending > 1) if (tsleep(sd, PRIBIO, "sr_sync", 60 * hz) == EWOULDBLOCK) { DNPRINTF(SR_D_DIS, "%s: sr_raid1_sync timeout\n", DEVNAME(sd->sd_sc)); rv = 1; break; } sd->sd_sync = 0; splx(s); return (rv); } int sr_raid1_rw(struct sr_workunit *wu) { struct sr_discipline *sd = wu->swu_dis; struct scsi_xfer *xs = wu->swu_xs; struct sr_workunit *wup; struct sr_ccb *ccb; struct sr_chunk *scp; int ios, x, i, s, rt; daddr64_t blk; DNPRINTF(SR_D_DIS, "%s: sr_raid1_rw 0x%02x\n", DEVNAME(sd->sd_sc), xs->cmd->opcode); if (sd->sd_vol.sv_meta.svm_status == BIOC_SVOFFLINE) { DNPRINTF(SR_D_DIS, "%s: sr_raid1_rw device offline\n", DEVNAME(sd->sd_sc)); goto bad; } if (xs->datalen == 0) { printf("%s: %s: illegal block count\n", DEVNAME(sd->sd_sc), sd->sd_vol.sv_meta.svm_devname); goto bad; } if (xs->cmdlen == 10) blk = _4btol(((struct scsi_rw_big *)xs->cmd)->addr); else if (xs->cmdlen == 6) blk = _3btol(((struct scsi_rw *)xs->cmd)->addr); else { printf("%s: %s: illegal cmdlen\n", DEVNAME(sd->sd_sc), sd->sd_vol.sv_meta.svm_devname); goto bad; } if (xs->flags & SCSI_DATA_IN) ios = 1; else ios = sd->sd_vol.sv_meta.svm_no_chunk; blk += SR_META_SIZE + SR_META_OFFSET; wu->swu_blk_start = blk; wu->swu_blk_end = blk + xs->datalen - 1; wu->swu_io_count = ios; for (i = 0; i < ios; i++) { ccb = sr_get_ccb(sd); if (!ccb) { /* should never happen but handle more gracefully */ printf("%s: %s: too many ccbs queued\n", DEVNAME(sd->sd_sc), sd->sd_vol.sv_meta.svm_devname); goto bad; } if (xs->flags & SCSI_POLL) { ccb->ccb_buf.b_flags = 0; ccb->ccb_buf.b_iodone = NULL; } else { ccb->ccb_buf.b_flags = B_CALL; ccb->ccb_buf.b_iodone = sr_raid1_intr; } ccb->ccb_buf.b_blkno = blk; ccb->ccb_buf.b_bcount = xs->datalen; ccb->ccb_buf.b_bufsize = xs->datalen; ccb->ccb_buf.b_resid = xs->datalen; ccb->ccb_buf.b_data = xs->data; ccb->ccb_buf.b_error = 0; ccb->ccb_buf.b_proc = curproc; ccb->ccb_wu = wu; if (xs->flags & SCSI_DATA_IN) { rt = 0; ragain: /* interleave reads */ x = sd->mds.mdd_raid1.sr1_counter++ % sd->sd_vol.sv_meta.svm_no_chunk; scp = sd->sd_vol.sv_chunks[x]; switch (scp->src_meta.scm_status) { case BIOC_SDONLINE: case BIOC_SDSCRUB: ccb->ccb_buf.b_flags |= B_READ; break; case BIOC_SDOFFLINE: case BIOC_SDREBUILD: case BIOC_SDHOTSPARE: if (rt++ < sd->sd_vol.sv_meta.svm_no_chunk) goto ragain; /* FALLTHROUGH */ default: /* volume offline */ printf("%s: is offline, can't read\n", DEVNAME(sd->sd_sc)); sr_put_ccb(ccb); goto bad; } } else { /* writes go on all working disks */ x = i; scp = sd->sd_vol.sv_chunks[x]; switch (scp->src_meta.scm_status) { case BIOC_SDONLINE: case BIOC_SDSCRUB: case BIOC_SDREBUILD: ccb->ccb_buf.b_flags |= B_WRITE; break; case BIOC_SDHOTSPARE: /* should never happen */ case BIOC_SDOFFLINE: wu->swu_io_count--; sr_put_ccb(ccb); continue; default: goto bad; } } ccb->ccb_target = x; ccb->ccb_buf.b_dev = sd->sd_vol.sv_chunks[x]->src_dev_mm; ccb->ccb_buf.b_vp = NULL; LIST_INIT(&ccb->ccb_buf.b_dep); TAILQ_INSERT_TAIL(&wu->swu_ccb, ccb, ccb_link); DNPRINTF(SR_D_DIS, "%s: %s: sr_raid1: b_bcount: %d " "b_blkno: %x b_flags 0x%0x b_data %p\n", DEVNAME(sd->sd_sc), sd->sd_vol.sv_meta.svm_devname, ccb->ccb_buf.b_bcount, ccb->ccb_buf.b_blkno, ccb->ccb_buf.b_flags, ccb->ccb_buf.b_data); #if 0 /* vprint("despatch: ", ccb->ccb_buf.b_vp); */ ccb->ccb_buf.b_vp->v_numoutput++; VOP_STRATEGY(&ccb->ccb_buf); if (xs->flags & SCSI_POLL) { /* polling, wait for completion */ biowait(&ccb->ccb_buf); if (ccb->ccb_buf.b_flags & B_ERROR) { printf("%s: %s: %s: i/o error on block %d\n", DEVNAME(sd->sd_sc), sd->sd_vol.sv_meta.svm_devname, sd->sd_vol.sv_chunks[x]->src_meta.scm_devname, ccb->ccb_buf.b_blkno); /* don't abort other ios because of error */ } sr_put_ccb(ccb); } #endif } /* walk queue backwards and fill in collider if we have one */ s = splbio(); TAILQ_FOREACH_REVERSE(wup, &sd->sd_wu_pendq, sr_wu_list, swu_link) { if (wu->swu_blk_end < wup->swu_blk_start || wup->swu_blk_end < wu->swu_blk_start) continue; /* we have an LBA collision, defer wu */ wu->swu_state = SR_WU_DEFERRED; if (wup->swu_collider) /* wu is on deferred queue, append to last wu */ while (wup->swu_collider) wup = wup->swu_collider; wup->swu_collider = wu; TAILQ_INSERT_TAIL(&sd->sd_wu_defq, wu, swu_link); sd->sd_wu_collisions++; goto queued; } /* XXX deal with polling */ sr_raid1_startwu(wu); queued: splx(s); return (0); bad: /* wu is unwound by sr_put_wu */ return (1); } void sr_raid1_startwu(struct sr_workunit *wu) { struct sr_discipline *sd = wu->swu_dis; struct sr_ccb *ccb; splassert(IPL_BIO); /* move wu to pending queue */ TAILQ_INSERT_TAIL(&sd->sd_wu_pendq, wu, swu_link); /* start all individual ios */ TAILQ_FOREACH(ccb, &wu->swu_ccb, ccb_link) { bdevsw_lookup(ccb->ccb_buf.b_dev)->d_strategy(&ccb->ccb_buf); } } void sr_raid1_intr(struct buf *bp) { struct sr_ccb *ccb = (struct sr_ccb *)bp; struct sr_workunit *wu = ccb->ccb_wu, *wup; struct sr_discipline *sd = wu->swu_dis; struct scsi_xfer *xs = wu->swu_xs; struct sr_softc *sc = sd->sd_sc; int s, pend; DNPRINTF(SR_D_INTR, "%s: sr_intr bp %x xs %x\n", DEVNAME(sc), bp, xs); DNPRINTF(SR_D_INTR, "%s: sr_intr: b_bcount: %d b_resid: %d" " b_flags: 0x%0x\n", DEVNAME(sc), ccb->ccb_buf.b_bcount, ccb->ccb_buf.b_resid, ccb->ccb_buf.b_flags); s = splbio(); if (ccb->ccb_buf.b_flags & B_ERROR) { printf("%s: i/o error on block %llu\n", DEVNAME(sc), ccb->ccb_buf.b_blkno); wu->swu_ios_failed++; ccb->ccb_state = SR_CCB_FAILED; if (ccb->ccb_target != -1) sd->sd_set_chunk_state(sd, ccb->ccb_target, BIOC_SDOFFLINE); else panic("%s: invalid target on wu: %p", DEVNAME(sc), wu); } else { ccb->ccb_state = SR_CCB_OK; wu->swu_ios_succeeded++; } wu->swu_ios_complete++; DNPRINTF(SR_D_INTR, "%s: sr_intr: comp: %d count: %d\n", DEVNAME(sc), wu->swu_ios_complete, wu->swu_io_count); if (wu->swu_ios_complete == wu->swu_io_count) { if (wu->swu_ios_failed == wu->swu_ios_complete) xs->error = XS_DRIVER_STUFFUP; else xs->error = XS_NOERROR; xs->resid = 0; xs->flags |= ITSDONE; pend = 0; TAILQ_FOREACH(wup, &sd->sd_wu_pendq, swu_link) { if (wu == wup) { /* wu on pendq, remove */ TAILQ_REMOVE(&sd->sd_wu_pendq, wu, swu_link); pend = 1; if (wu->swu_collider) { /* restart deferred wu */ wu->swu_collider->swu_state = SR_WU_INPROGRESS; TAILQ_REMOVE(&sd->sd_wu_defq, wu->swu_collider, swu_link); sr_raid1_startwu(wu->swu_collider); } break; } } if (!pend) printf("%s: wu: %p not on pending queue\n", DEVNAME(sc), wu); /* do not change the order of these 2 functions */ sr_put_wu(wu); scsi_done(xs); if (sd->sd_sync && sd->sd_wu_pending == 0) wakeup(sd); } splx(s); } void sr_raid1_set_chunk_state(struct sr_discipline *sd, int c, int new_state) { int old_state, s; DNPRINTF(SR_D_STATE, "%s: %s: %s: sr_raid1_set_chunk_state %d -> %d\n", DEVNAME(sd->sd_sc), sd->sd_vol.sv_meta.svm_devname, sd->sd_vol.sv_chunks[c]->src_meta.scm_devname, c, new_state); /* ok to go to splbio since this only happens in error path */ s = splbio(); old_state = sd->sd_vol.sv_chunks[c]->src_meta.scm_status; /* multiple IOs to the same chunk that fail will come through here */ if (old_state == new_state) goto done; switch (old_state) { case BIOC_SDONLINE: switch (new_state) { case BIOC_SDOFFLINE: break; case BIOC_SDSCRUB: break; default: goto die; } break; case BIOC_SDOFFLINE: if (new_state == BIOC_SDREBUILD) { ; } else goto die; break; case BIOC_SDSCRUB: if (new_state == BIOC_SDONLINE) { ; } else goto die; break; case BIOC_SDREBUILD: if (new_state == BIOC_SDONLINE) { ; } else goto die; break; case BIOC_SDHOTSPARE: if (new_state == BIOC_SDREBUILD) { ; } else goto die; break; default: die: splx(s); /* XXX */ panic("%s: %s: %s: invalid chunk state transition " "%d -> %d\n", DEVNAME(sd->sd_sc), sd->sd_vol.sv_meta.svm_devname, sd->sd_vol.sv_chunks[c]->src_meta.scm_devname, old_state, new_state); /* NOTREACHED */ } sd->sd_vol.sv_chunks[c]->src_meta.scm_status = new_state; sd->sd_set_vol_state(sd); done: splx(s); } void sr_raid1_set_vol_state(struct sr_discipline *sd) { int states[SR_MAX_STATES]; int new_state, i, s, nd; int old_state = sd->sd_vol.sv_meta.svm_status; DNPRINTF(SR_D_STATE, "%s: %s: sr_raid1_set_vol_state\n", DEVNAME(sd->sd_sc), sd->sd_vol.sv_meta.svm_devname); nd = sd->sd_vol.sv_meta.svm_no_chunk; for (i = 0; i < SR_MAX_STATES; i++) states[i] = 0; for (i = 0; i < nd; i++) { s = sd->sd_vol.sv_chunks[i]->src_meta.scm_status; if (s > SR_MAX_STATES) panic("%s: %s: %s: invalid chunk state", DEVNAME(sd->sd_sc), sd->sd_vol.sv_meta.svm_devname, sd->sd_vol.sv_chunks[i]->src_meta.scm_devname); states[s]++; } if (states[BIOC_SDONLINE] == nd) new_state = BIOC_SVONLINE; else if (states[BIOC_SDONLINE] == 0) new_state = BIOC_SVOFFLINE; else if (states[BIOC_SDSCRUB] != 0) new_state = BIOC_SVSCRUB; else if (states[BIOC_SDREBUILD] != 0) new_state = BIOC_SVREBUILD; else if (states[BIOC_SDOFFLINE] != 0) new_state = BIOC_SVDEGRADED; else { printf("old_state = %d, ", old_state); for (i = 0; i < nd; i++) printf("%d = %d, ", i, sd->sd_vol.sv_chunks[i]->src_meta.scm_status); panic("invalid new_state"); } DNPRINTF(SR_D_STATE, "%s: %s: sr_raid1_set_vol_state %d -> %d\n", DEVNAME(sd->sd_sc), sd->sd_vol.sv_meta.svm_devname, old_state, new_state); switch (old_state) { case BIOC_SVONLINE: switch (new_state) { case BIOC_SVOFFLINE: case BIOC_SVDEGRADED: break; default: goto die; } break; case BIOC_SVOFFLINE: /* XXX this might be a little too much */ goto die; case BIOC_SVSCRUB: switch (new_state) { case BIOC_SVONLINE: case BIOC_SVOFFLINE: case BIOC_SVDEGRADED: case BIOC_SVSCRUB: /* can go to same state */ break; default: goto die; } break; case BIOC_SVBUILDING: switch (new_state) { case BIOC_SVONLINE: case BIOC_SVOFFLINE: case BIOC_SVBUILDING: /* can go to the same state */ break; default: goto die; } break; case BIOC_SVREBUILD: switch (new_state) { case BIOC_SVONLINE: case BIOC_SVOFFLINE: case BIOC_SVREBUILD: /* can go to the same state */ break; default: goto die; } break; case BIOC_SVDEGRADED: switch (new_state) { case BIOC_SVOFFLINE: case BIOC_SVREBUILD: case BIOC_SVDEGRADED: /* can go to the same state */ break; default: goto die; } break; default: die: panic("%s: %s: invalid volume state transition " "%d -> %d\n", DEVNAME(sd->sd_sc), sd->sd_vol.sv_meta.svm_devname, old_state, new_state); /* NOTREACHED */ } sd->sd_vol.sv_meta.svm_status = new_state; } u_int32_t sr_checksum(char *s, u_int32_t *p, u_int32_t size) { u_int32_t chk = 0; int i; DNPRINTF(SR_D_MISC, "%s: sr_checksum %p %d\n", s, p, size); if (size % sizeof(u_int32_t)) return (0); /* 0 is failure */ for (i = 0; i < size / sizeof(u_int32_t); i++) chk ^= p[i]; return (chk); } void sr_get_uuid(struct sr_uuid *uuid) { int i; for (i = 0; i < SR_UUID_MAX; i++) uuid->sui_id[i] = arc4random(); } void sr_print_uuid(struct sr_uuid *uuid, int cr) { int i; for (i = 0; i < SR_UUID_MAX; i++) printf("%x%s", uuid->sui_id[i], i < SR_UUID_MAX - 1 ? ":" : ""); if (cr) printf("\n"); } int sr_clear_metadata(struct sr_discipline *sd) { struct sr_softc *sc = sd->sd_sc; struct sr_chunk_head *cl = &sd->sd_vol.sv_chunk_list; struct sr_chunk *ch_entry; struct buf b; size_t sz = SR_META_SIZE * 512; void *m; int rv = 0; DNPRINTF(SR_D_META, "%s: sr_clear_metadata\n", DEVNAME(sc)); m = malloc(sz , M_DEVBUF, M_WAITOK); bzero(m, sz); SLIST_FOREACH(ch_entry, cl, src_link) { bzero(&b, sizeof(b)); b.b_flags = B_WRITE; b.b_blkno = SR_META_OFFSET; b.b_bcount = sz; b.b_bufsize = sz; b.b_resid = sz; b.b_data = (void *)m; b.b_error = 0; b.b_proc = curproc; b.b_dev = ch_entry->src_dev_mm; b.b_vp = NULL; b.b_iodone = NULL; LIST_INIT(&b.b_dep); bdevsw_lookup(b.b_dev)->d_strategy(&b); biowait(&b); if (b.b_flags & B_ERROR) { printf("%s: %s i/o error on block %d while clearing " "metadata %d\n", DEVNAME(sc), ch_entry->src_devname, b.b_blkno, b.b_error); rv++; continue; } } free(m, M_DEVBUF); return (rv); } int sr_already_assembled(struct sr_discipline *sd) { struct sr_softc *sc = sd->sd_sc; int i; for (i = 0; i < SR_MAXSCSIBUS; i++) if (sc->sc_dis[i]) if (!bcmp(&sd->sd_meta->ssd_uuid, &sc->sc_dis[i]->sd_meta->ssd_uuid, sizeof(sd->sd_meta->ssd_uuid))) return (1); return (0); } int sr_save_metadata(struct sr_discipline *sd) { struct sr_softc *sc = sd->sd_sc; struct sr_metadata *sm = sd->sd_meta; struct sr_vol_meta *sv = &sd->sd_vol.sv_meta, *im_sv; struct sr_chunk_meta *im_sc; struct sr_chunk *src; struct buf b; int i, rv = 1, ch = 0; size_t sz = SR_META_SIZE * 512; DNPRINTF(SR_D_META, "%s: sr_save_metadata %s\n", DEVNAME(sc), sd->sd_vol.sv_meta.svm_devname); if (!sm) { printf("%s: no in memory copy of metadata\n", DEVNAME(sc)); goto bad; } im_sv = (struct sr_vol_meta *)(sm + 1); im_sc = (struct sr_chunk_meta *)(im_sv + 1); if (sizeof(struct sr_metadata) + sizeof(struct sr_vol_meta) + (sizeof(struct sr_chunk_meta) * sd->sd_vol.sv_meta.svm_no_chunk) > sz) { printf("%s: too much metadata; metadata NOT written\n", DEVNAME(sc)); goto bad; } if (sm->ssd_magic == 0) { /* initial metadata */ sm->ssd_magic = SR_MAGIC; sm->ssd_version = SR_META_VERSION; sm->ssd_size = sizeof(struct sr_metadata); sm->ssd_ondisk = 0; sm->ssd_flags = sd->sd_meta_flags; /* get uuid from chunk 0 */ bcopy(&sd->sd_vol.sv_chunks[0]->src_meta.scm_uuid, &sm->ssd_uuid, sizeof(struct sr_uuid)); /* volume */ bcopy(sv, im_sv, sizeof(struct sr_vol_meta)); bcopy(&sm->ssd_uuid, &im_sv->svm_uuid, sizeof(im_sv->svm_uuid)); sm->ssd_vd_ver = SR_VOL_VERSION; sm->ssd_vd_size = sizeof(struct sr_vol_meta); /* chunk */ for (i = 0; i < sd->sd_vol.sv_meta.svm_no_chunk; i++) bcopy(sd->sd_vol.sv_chunks[i], &im_sc[i], sizeof(struct sr_chunk_meta)); sm->ssd_chunk_ver = SR_CHUNK_VERSION; sm->ssd_chunk_size = sizeof(struct sr_chunk_meta); sm->ssd_chunk_no = sd->sd_vol.sv_meta.svm_no_chunk; } /* from here on out metadata is updated */ sm->ssd_ondisk++; sm->ssd_vd_chk = sr_checksum(DEVNAME(sc), (u_int32_t *)im_sv, sm->ssd_vd_size); sm->ssd_chunk_chk = 0; for (ch = 0; ch < sm->ssd_chunk_no; ch++) sm->ssd_chunk_chk ^= sr_checksum(DEVNAME(sc), (u_int32_t *)&im_sc[ch], sm->ssd_chunk_size); sr_print_metadata(sm); for (i = 0; i < sm->ssd_chunk_no; i++) { memset(&b, 0, sizeof(b)); src = sd->sd_vol.sv_chunks[i]; /* skip disks that are offline */ if (src->src_meta.scm_status == BIOC_SDOFFLINE) continue; /* calculate metdata checksum and ids */ sm->ssd_vd_volid = im_sv->svm_volid; sm->ssd_chunk_id = i; sm->ssd_checksum = sr_checksum(DEVNAME(sc), (u_int32_t *)sm, sm->ssd_size); DNPRINTF(SR_D_META, "%s: sr_save_metadata %s: volid: %d " "chunkid: %d checksum: 0x%x\n", DEVNAME(sc), src->src_meta.scm_devname, sm->ssd_vd_volid, sm->ssd_chunk_id, sm->ssd_checksum); b.b_flags = B_WRITE; b.b_blkno = SR_META_OFFSET; b.b_bcount = sz; b.b_bufsize = sz; b.b_resid = sz; b.b_data = (void *)sm; b.b_error = 0; b.b_proc = curproc; b.b_dev = src->src_dev_mm; b.b_vp = NULL; b.b_iodone = NULL; LIST_INIT(&b.b_dep); bdevsw_lookup(b.b_dev)->d_strategy(&b); biowait(&b); /* make sure in memory copy is clean */ sm->ssd_vd_volid = 0; sm->ssd_chunk_id = 0; sm->ssd_checksum = 0; /* XXX do something smart here */ /* mark chunk offline and restart metadata write */ if (b.b_flags & B_ERROR) { printf("%s: %s i/o error on block %d while writing " "metadata %d\n", DEVNAME(sc), src->src_meta.scm_devname, b.b_blkno, b.b_error); goto bad; } DNPRINTF(SR_D_META, "%s: sr_save_metadata written to %s\n", DEVNAME(sc), src->src_meta.scm_devname); } rv = 0; bad: return (rv); } int sr_boot_assembly(struct sr_softc *sc) { struct device *dv; struct buf *bp; struct bdevsw *bdsw; struct disklabel label; struct sr_metadata *sm; struct sr_metadata_list_head mlh; struct sr_metadata_list *mle, *mle2; struct bioc_createraid bc; dev_t dev, devr, *dt = NULL; int error, majdev, i, no_dev, rv = 0; size_t sz = SR_META_SIZE * 512; DNPRINTF(SR_D_META, "%s: sr_boot_assembly\n", DEVNAME(sc)); SLIST_INIT(&mlh); bp = geteblk(sz); TAILQ_FOREACH(dv, &alldevs, dv_list) { if (dv->dv_class != DV_DISK) continue; majdev = findblkmajor(dv); bp->b_dev = dev = MAKEDISKDEV(majdev, dv->dv_unit, RAW_PART); bdsw = &bdevsw[major(dev)]; /* XXX is there a better way of excluding some devices? */ if (!strncmp(dv->dv_xname, "fd", 2) || !strncmp(dv->dv_xname, "cd", 2)) continue; /* open device */ error = (*bdsw->d_open)(dev, FREAD, S_IFBLK, curproc); if (error) { DNPRINTF(SR_D_META, "%s: sr_boot_assembly open failed" "\n", DEVNAME(sc)); continue; } /* get disklabel */ error = (*bdsw->d_ioctl)(dev, DIOCGDINFO, (void *)&label, FREAD, curproc); if (error) { DNPRINTF(SR_D_META, "%s: sr_boot_assembly ioctl " "failed\n", DEVNAME(sc)); error = (*bdsw->d_close)(dev, FREAD, S_IFBLK, curproc); continue; } /* we are done, close device */ error = (*bdsw->d_close)(dev, FREAD, S_IFBLK, curproc); if (error) { DNPRINTF(SR_D_META, "%s: sr_boot_assembly close " "failed\n", DEVNAME(sc)); continue; } /* are we a softraid partition? */ for (i = 0; i < MAXPARTITIONS; i++) { if (label.d_partitions[i].p_fstype != FS_RAID) continue; /* open device */ bp->b_dev = devr = MAKEDISKDEV(majdev, dv->dv_unit, i); error = (*bdsw->d_open)(devr, FREAD, S_IFBLK, curproc); if (error) { DNPRINTF(SR_D_META, "%s: sr_boot_assembly " "open failed, partition %d\n", DEVNAME(sc), i); continue; } /* read metadat */ bp->b_flags = B_BUSY | B_READ; bp->b_blkno = SR_META_OFFSET; bp->b_cylinder = 0; bp->b_bcount = sz; bp->b_bufsize = sz; bp->b_resid = sz; (*bdsw->d_strategy)(bp); if ((error = biowait(bp))) { DNPRINTF(SR_D_META, "%s: sr_boot_assembly " "strategy failed, partition %d\n", DEVNAME(sc)); error = (*bdsw->d_close)(devr, FREAD, S_IFBLK, curproc); continue; } sm = (struct sr_metadata *)bp->b_data; if (!sr_validate_metadata(sc, devr, sm)) { /* we got one; save it off */ mle = malloc(sizeof(*mle), M_DEVBUF, M_WAITOK); bzero(mle, sizeof(*mle)); mle->sml_metadata = malloc(sz, M_DEVBUF, M_WAITOK); bzero(mle->sml_metadata, sz); bcopy(sm, mle->sml_metadata, sz); mle->sml_mm = devr; SLIST_INSERT_HEAD(&mlh, mle, sml_link); } /* we are done, close device */ error = (*bdsw->d_close)(devr, FREAD, S_IFBLK, curproc); if (error) { DNPRINTF(SR_D_META, "%s: sr_boot_assembly " "close failed\n", DEVNAME(sc)); continue; } } } /* * XXX poor mans hack that doesn't keep disks in order and does not * roam disks correctly. replace this with something smarter that * orders disks by volid, chunkid and uuid. */ dt = malloc(BIOC_CRMAXLEN, M_DEVBUF, M_WAITOK); SLIST_FOREACH(mle, &mlh, sml_link) { /* chunk used already? */ if (mle->sml_used) continue; no_dev = 0; bzero(dt, BIOC_CRMAXLEN); SLIST_FOREACH(mle2, &mlh, sml_link) { /* chunk used already? */ if (mle2->sml_used) continue; /* are we the same volume? */ if (mle->sml_metadata->ssd_vd_volid != mle2->sml_metadata->ssd_vd_volid) continue; /* same uuid? */ if (bcmp(&mle->sml_metadata->ssd_uuid, &mle2->sml_metadata->ssd_uuid, sizeof(mle->sml_metadata->ssd_uuid))) continue; /* sanity */ if (dt[mle2->sml_metadata->ssd_chunk_id]) { printf("%s: chunk id already in use; can not " "assemble volume\n", DEVNAME(sc)); goto unwind; } dt[mle2->sml_metadata->ssd_chunk_id] = mle2->sml_mm; no_dev++; mle2->sml_used = 1; } if (mle->sml_metadata->ssd_chunk_no != no_dev) { printf("%s: not assembling partial disk that used to " "be volume %d\n", DEVNAME(sc), mle->sml_metadata->ssd_vd_volid); continue; } bzero(&bc, sizeof(bc)); bc.bc_level = 1; bc.bc_dev_list_len = no_dev * sizeof(dev_t); bc.bc_dev_list = dt; bc.bc_flags = BIOC_SCDEVT; sr_ioctl_createraid(sc, &bc, 0); rv++; } unwind: if (dt) free(dt, M_DEVBUF); for (mle = SLIST_FIRST(&mlh); mle != SLIST_END(&mlh); mle = mle2) { mle2 = SLIST_NEXT(mle, sml_link); free(mle->sml_metadata, M_DEVBUF); free(mle, M_DEVBUF); } SLIST_INIT(&mlh); return (rv); } int sr_validate_metadata(struct sr_softc *sc, dev_t dev, struct sr_metadata *sm) { struct sr_vol_meta *mv; struct sr_chunk_meta *mc; char *name, devname[32]; int maj, part, unit; u_int32_t chk; DNPRINTF(SR_D_META, "%s: sr_validate_metadata(0x%x)\n", DEVNAME(sc), dev); if (sm->ssd_magic != SR_MAGIC) goto bad; maj = major(dev); part = DISKPART(dev); unit = DISKUNIT(dev); name = findblkname(maj); if (name == NULL) goto bad; snprintf(devname, sizeof(devname), "%s%d%c", name, unit, part + 'a'); name = devname; /* validate metadata */ if (sm->ssd_version != SR_META_VERSION) { printf("%s: %s can not read metadata version %d, " "expected %d\n", DEVNAME(sc), devname, sm->ssd_version, SR_META_VERSION); goto bad; } if (sm->ssd_size != sizeof(struct sr_metadata)) { printf("%s: %s invalid metadata size %d, " "expected %d\n", DEVNAME(sc), devname, sm->ssd_size, sizeof(struct sr_metadata)); goto bad; } chk = sr_checksum(DEVNAME(sc), (u_int32_t *)sm, sm->ssd_size); /* * since the checksum value is part of the checksum a good * result equals 0 */ if (chk != 0) { printf("%s: %s invalid metadata checksum 0x%x, " "expected 0x%x\n", DEVNAME(sc), devname, sm->ssd_checksum, chk); goto bad; } /* validate volume metadata */ if (sm->ssd_vd_ver != SR_VOL_VERSION) { printf("%s: %s can not read volume metadata version " "%d, expected %d\n", DEVNAME(sc), devname, sm->ssd_vd_ver, SR_VOL_VERSION); goto bad; } if (sm->ssd_vd_size != sizeof(struct sr_vol_meta)) { printf("%s: %s invalid volume metadata size %d, " "expected %d\n", DEVNAME(sc), devname, sm->ssd_vd_size, sizeof(struct sr_vol_meta)); goto bad; } mv = (struct sr_vol_meta *)(sm + 1); chk = sr_checksum(DEVNAME(sc), (u_int32_t *)mv, sm->ssd_vd_size); if (chk != sm->ssd_vd_chk) { printf("%s: %s invalid volume metadata checksum 0x%x, " "expected 0x%x\n", DEVNAME(sc), devname, sm->ssd_vd_chk, chk); goto bad; } /* validate chunk metadata */ if (sm->ssd_chunk_ver != SR_CHUNK_VERSION) { printf("%s: %s can not read chunk metadata version " "%d, expected %d\n", DEVNAME(sc), devname, sm->ssd_chunk_ver, SR_CHUNK_VERSION); goto bad; } if (sm->ssd_chunk_size != sizeof(struct sr_chunk_meta)) { printf("%s: %s invalid chunk metadata size %d, " "expected %d\n", DEVNAME(sc), devname, sm->ssd_chunk_size, sizeof(struct sr_chunk_meta)); goto bad; } mc = (struct sr_chunk_meta *)(mv + 1); /* checksum is calculated over ALL chunks */ chk = sr_checksum(DEVNAME(sc), (u_int32_t *)(mc), sm->ssd_chunk_size * sm->ssd_chunk_no); if (chk != sm->ssd_chunk_chk) { printf("%s: %s invalid chunk metadata checksum 0x%x, " "expected 0x%x\n", DEVNAME(sc), devname, sm->ssd_chunk_chk, chk); goto bad; } /* warn if disk changed order */ if (strncmp(mc[sm->ssd_chunk_id].scm_devname, name, sizeof(mc[sm->ssd_chunk_id].scm_devname))) printf("%s: roaming device %s -> %s\n", DEVNAME(sc), mc[sm->ssd_chunk_id].scm_devname, name); /* we have meta data on disk */ DNPRINTF(SR_D_META, "%s: sr_validate_metadata valid metadata %s\n", DEVNAME(sc), devname); return (0); bad: DNPRINTF(SR_D_META, "%s: sr_validate_metadata invalid metadata %s\n", DEVNAME(sc), devname); return (1); } int sr_create_sensors(struct sr_discipline *sd) { struct sr_softc *sc = sd->sd_sc; int rv = 1; DNPRINTF(SR_D_STATE, "%s: %s: sr_create_sensors\n", DEVNAME(sc), sd->sd_vol.sv_meta.svm_devname); strlcpy(sd->sd_vol.sv_sensordev.xname, DEVNAME(sc), sizeof(sd->sd_vol.sv_sensordev.xname)); sd->sd_vol.sv_sensor.type = SENSOR_DRIVE; sd->sd_vol.sv_sensor.status = SENSOR_S_UNKNOWN; strlcpy(sd->sd_vol.sv_sensor.desc, sd->sd_vol.sv_meta.svm_devname, sizeof(sd->sd_vol.sv_sensor.desc)); sensor_attach(&sd->sd_vol.sv_sensordev, &sd->sd_vol.sv_sensor); if (sc->sc_sensors_running == 0) { if (sensor_task_register(sc, sr_refresh_sensors, 10) != 0) goto bad; sc->sc_sensors_running = 1; } sensordev_install(&sd->sd_vol.sv_sensordev); rv = 0; bad: return (rv); } void sr_refresh_sensors(void *arg) { struct sr_softc *sc = arg; int i, vol; struct sr_volume *sv; DNPRINTF(SR_D_STATE, "%s: sr_refresh_sensors\n", DEVNAME(sc)); for (i = 0, vol = -1; i < SR_MAXSCSIBUS; i++) { /* XXX this will not work when we stagger disciplines */ if (!sc->sc_dis[i]) continue; sv = &sc->sc_dis[i]->sd_vol; switch(sv->sv_meta.svm_status) { case BIOC_SVOFFLINE: sv->sv_sensor.value = SENSOR_DRIVE_FAIL; sv->sv_sensor.status = SENSOR_S_CRIT; break; case BIOC_SVDEGRADED: sv->sv_sensor.value = SENSOR_DRIVE_PFAIL; sv->sv_sensor.status = SENSOR_S_WARN; break; case BIOC_SVSCRUB: case BIOC_SVONLINE: sv->sv_sensor.value = SENSOR_DRIVE_ONLINE; sv->sv_sensor.status = SENSOR_S_OK; break; default: sv->sv_sensor.value = 0; /* unknown */ sv->sv_sensor.status = SENSOR_S_UNKNOWN; } } } #ifdef SR_FANCY_STATS void sr_print_stats(void); void sr_print_stats(void) { struct sr_softc *sc; struct sr_discipline *sd; int i, vol; for (i = 0; i < softraid_cd.cd_ndevs; i++) if (softraid_cd.cd_devs[i]) { sc = softraid_cd.cd_devs[i]; /* we'll only have one softc */ break; } if (!sc) { printf("no softraid softc found\n"); return; } for (i = 0, vol = -1; i < SR_MAXSCSIBUS; i++) { /* XXX this will not work when we stagger disciplines */ if (!sc->sc_dis[i]) continue; sd = sc->sc_dis[i]; printf("%s: ios pending: %d collisions %llu\n", sd->sd_vol.sv_meta.svm_devname, sd->sd_wu_pending, sd->sd_wu_collisions); } } #endif #ifdef SR_DEBUG void sr_print_metadata(struct sr_metadata *sm) { struct sr_vol_meta *im_sv; struct sr_chunk_meta *im_sc; int ch; im_sv = (struct sr_vol_meta *)(sm + 1); im_sc = (struct sr_chunk_meta *)(im_sv + 1); DNPRINTF(SR_D_META, "\tmeta magic 0x%llx\n", sm->ssd_magic); DNPRINTF(SR_D_META, "\tmeta version %d\n", sm->ssd_version); DNPRINTF(SR_D_META, "\tmeta checksum 0x%x\n", sm->ssd_checksum); DNPRINTF(SR_D_META, "\tmeta size %d\n", sm->ssd_size); DNPRINTF(SR_D_META, "\tmeta on disk version %u\n", sm->ssd_ondisk); DNPRINTF(SR_D_META, "\tmeta uuid "); sr_print_uuid(&sm->ssd_uuid, 1); DNPRINTF(SR_D_META, "\tvd version %d\n", sm->ssd_vd_ver); DNPRINTF(SR_D_META, "\tvd size %lu\n", sm->ssd_vd_size); DNPRINTF(SR_D_META, "\tvd id %u\n", sm->ssd_vd_volid); DNPRINTF(SR_D_META, "\tvd checksum 0x%x\n", sm->ssd_vd_chk); DNPRINTF(SR_D_META, "\tchunk version %d\n", sm->ssd_chunk_ver); DNPRINTF(SR_D_META, "\tchunks %d\n", sm->ssd_chunk_no); DNPRINTF(SR_D_META, "\tchunk size %u\n", sm->ssd_chunk_size); DNPRINTF(SR_D_META, "\tchunk id %u\n", sm->ssd_chunk_id); DNPRINTF(SR_D_META, "\tchunk checksum 0x%x\n", sm->ssd_chunk_chk); DNPRINTF(SR_D_META, "\t\tvol id %d\n", im_sv->svm_volid); DNPRINTF(SR_D_META, "\t\tvol status %d\n", im_sv->svm_status); DNPRINTF(SR_D_META, "\t\tvol flags 0x%x\n", im_sv->svm_flags); DNPRINTF(SR_D_META, "\t\tvol level %d\n", im_sv->svm_level); DNPRINTF(SR_D_META, "\t\tvol size %llu\n", im_sv->svm_size); DNPRINTF(SR_D_META, "\t\tvol name %s\n", im_sv->svm_devname); DNPRINTF(SR_D_META, "\t\tvol vendor %s\n", im_sv->svm_vendor); DNPRINTF(SR_D_META, "\t\tvol prod %s\n", im_sv->svm_product); DNPRINTF(SR_D_META, "\t\tvol rev %s\n", im_sv->svm_revision); DNPRINTF(SR_D_META, "\t\tvol no chunks %d\n", im_sv->svm_no_chunk); DNPRINTF(SR_D_META, "\t\tvol uuid "); sr_print_uuid(& im_sv->svm_uuid, 1); for (ch = 0; ch < im_sv->svm_no_chunk; ch++) { DNPRINTF(SR_D_META, "\t\t\tchunk vol id %d\n", im_sc[ch].scm_volid); DNPRINTF(SR_D_META, "\t\t\tchunk id %d\n", im_sc[ch].scm_chunk_id); DNPRINTF(SR_D_META, "\t\t\tchunk status %d\n", im_sc[ch].scm_status); DNPRINTF(SR_D_META, "\t\t\tchunk name %s\n", im_sc[ch].scm_devname); DNPRINTF(SR_D_META, "\t\t\tchunk size %llu\n", im_sc[ch].scm_size); DNPRINTF(SR_D_META, "\t\t\tchunk coerced size %llu\n", im_sc[ch].scm_coerced_size); DNPRINTF(SR_D_META, "\t\t\tchunk uuid "); sr_print_uuid(&im_sc[ch].scm_uuid, 1); } } #endif