diff options
| author | Matthew Dempsky <matthew@cvs.openbsd.org> | 2011-08-26 04:36:43 +0000 |
|---|---|---|
| committer | Matthew Dempsky <matthew@cvs.openbsd.org> | 2011-08-26 04:36:43 +0000 |
| commit | c6e077c7e682dab0c4f6149073271cee55087710 (patch) | |
| tree | 73cd0e437913128d373c6b4084e50cb1b2966e85 | |
| parent | 6b4973f4d23373c1f0834a7e54718fe621bc5731 (diff) | |
Add a dmesg warning about sloppy disk I/O to vnd(4) devices to help
identify bad distrib scripts/tools.
ok deraadt@
| -rw-r--r-- | sys/dev/vnd.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/sys/dev/vnd.c b/sys/dev/vnd.c index ea25556c0bb..4822d6b9201 100644 --- a/sys/dev/vnd.c +++ b/sys/dev/vnd.c @@ -1,4 +1,4 @@ -/* $OpenBSD: vnd.c,v 1.148 2011/07/18 02:49:20 matthew Exp $ */ +/* $OpenBSD: vnd.c,v 1.149 2011/08/26 04:36:42 matthew Exp $ */ /* $NetBSD: vnd.c,v 1.26 1996/03/30 23:06:11 christos Exp $ */ /* @@ -304,6 +304,15 @@ vndstrategy(struct buf *bp) if (sc->sc_keyctx == NULL) { u_int32_t secsize = sc->sc_dk.dk_label->d_secsize; bp->b_bcount = ((origbcount + secsize - 1) & ~(secsize - 1)); +#ifdef DIAGNOSTIC + if (bp->b_bcount != origbcount) { + struct proc *pr = curproc; + printf("%s: sloppy %s from proc %d (%s): " + "blkno %lld bcount %ld\n", sc->sc_dev.dv_xname, + (bp->b_flags & B_READ) ? "read" : "write", + pr->p_pid, pr->p_comm, bp->b_blkno, origbcount); + } +#endif } if (bounds_check_with_label(bp, sc->sc_dk.dk_label) == -1) { |