Date: Mon, 20 Jul 2009 23:32:05 +0200 From: Ivan Voras <ivoras@freebsd.org> To: freebsd-fs@freebsd.org Subject: Re: geom_mirror/UFS weirdness with 7.2-STABLE Message-ID: <h42nos$buu$1@ger.gmane.org> In-Reply-To: <4A646DA8.2050201@acm.poly.edu> References: <4A646DA8.2050201@acm.poly.edu>
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[-- Attachment #1 --] Boris Kochergin wrote: > Ahoy. I noticed some very odd things in my file server's kernel buffer > this morning (there were actually a ton of these--this is a snippet): > > Jul 20 05:54:10 exodus smartd[763]: Device: /dev/ad1, FAILED SMART > self-check. BACK UP DATA NOW! > Jul 20 05:57:57 exodus kernel: > g_vfs_done():mirror/boots1[READ(offset=-4569735194538825728, > length=16384)]error = 5 > Jul 20 05:57:57 exodus kernel: bad block 8806809555123731765, ino 4430620 > Jul 20 05:57:57 exodus kernel: pid 35 (softdepflush), uid 0 inumber > 4430620 on /: bad block > > # df / > Filesystem 1K-blocks Used Avail > Capacity Mounted on > /dev/mirror/boots1 37846636 -4058799239201906816 4058799239236725722 > -11656883301279% / > > The system is a: > > # uname -a > FreeBSD exodus.poly.edu 7.2-STABLE FreeBSD 7.2-STABLE #3: Sat Jul 11 > 16:22:02 EDT 2009 root@exodus.poly.edu:/usr/obj/usr/src/sys/EXODUS > amd64 > > Regarding smartd yelling at me about /dev/ad1, it's been doing that for > long while before this. There is one sector on the drive that cannot be > read, but the disk has otherwise been fine for months. My experience > with geom_mirror has been that it disconnects members from an array if > they experience I/O errors, so this seems to be something different. Any > clues? It looks like the drive returned corrupted data without returning an error - which is strange, but not impossible. You are probably seeing numbers like -4058799239201906816 because some metadata is corrupted. If so, you should immediately disconnect the problematic drive so that the errorneous data isn't picked up and written to the good drive. [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkpk4lUACgkQldnAQVacBcg9YgCg4gENDmV+VS0OePXe/bglQSle iOEAoK3LBtdXGaOXBTwbwb3YF3v8+G5h =Grl1 -----END PGP SIGNATURE-----
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