Date: Mon, 25 May 2009 18:35:59 +0200 From: Thomas Backman <serenity@exscape.org> To: Freddie Cash <fjwcash@gmail.com> Cc: freebsd-current@freebsd.org Subject: Re: ZFS panic under extreme circumstances (2/3 disks corrupted) Message-ID: <45674300-D57D-4CD4-BF69-90744F9C90A0@exscape.org> In-Reply-To: <b269bc570905250919t5bf37b5cv6037f22eaf925154@mail.gmail.com> References: <4E6E325D-BB18-4478-BCFD-633D6F4CFD88@exscape.org> <D98FEABB-8B8A-48E6-B021-B05816B4C699@exscape.org> <b269bc570905250839r54a0f58fo5474e9e219a222ca@mail.gmail.com> <D817D098-9C36-4B72-9DCB-027CE8A7C564@exscape.org> <b269bc570905250919t5bf37b5cv6037f22eaf925154@mail.gmail.com>
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On May 25, 2009, at 06:19 PM, Freddie Cash wrote: > On Mon, May 25, 2009 at 9:12 AM, Thomas Backman > <serenity@exscape.org> wrote: >> On May 25, 2009, at 05:39 PM, Freddie Cash wrote: >> Was this on FreeBSD? > > 64-bit FreeBSD 7.1 using ZFS v6. SATA drives connected to 3Ware RAID > controllers, but configured as "Single Drive" arrays not using > hardware RAID in any way. > >> I have another unfortunate thing to note regarding this: after a >> reboot, >> it's even impossible to tell *which disk* has gone bad, even if the >> pool is >> "uncleared" but otherwise "healed". It simply says that a device >> has failed, >> with no clue as to which one, since they're all "ONLINE"! > > Even when using -v? zpool status -v Yup, unfortunately. [root@clone ~]# zpool status -v test pool: test state: ONLINE status: One or more devices has experienced an error resulting in data corruption. Applications may be affected. action: Restore the file in question if possible. Otherwise restore the entire pool from backup. see: http://www.sun.com/msg/ZFS-8000-8A scrub: scrub completed after 0h0m with 372 errors on Mon May 25 12:57:46 2009 config: NAME STATE READ WRITE CKSUM test ONLINE 0 0 373 raidz1 ONLINE 0 0 747 da1 ONLINE 0 0 0 9K repaired da2 ONLINE 0 0 171 119K repaired da3 ONLINE 0 0 0 9K repaired raidz1 ONLINE 0 0 2 ad0 ONLINE 0 0 0 ad1 ONLINE 0 0 315 ad3 ONLINE 0 0 318 errors: Permanent errors have been detected in the following files: /test/testfile [root@clone ~]# reboot [root@clone ~]# zpool status -xv pool: test state: ONLINE status: One or more devices has experienced an error resulting in data corruption. Applications may be affected. action: Restore the file in question if possible. Otherwise restore the entire pool from backup. see: http://www.sun.com/msg/ZFS-8000-8A scrub: none requested config: NAME STATE READ WRITE CKSUM test ONLINE 0 0 0 raidz1 ONLINE 0 0 0 da1 ONLINE 0 0 0 da2 ONLINE 0 0 0 da3 ONLINE 0 0 0 raidz1 ONLINE 0 0 0 ad0 ONLINE 0 0 0 ad1 ONLINE 0 0 0 ad3 ONLINE 0 0 0 errors: Permanent errors have been detected in the following files: /test/testfile
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