Date: Tue, 19 Feb 2013 15:20:58 -0600 From: CyberLeo Kitsana <cyberleo@cyberleo.net> To: Jonni Nakari <jonni@egarden.fi> Cc: questions@FreeBSD.org Subject: Re: ZFS pool data recovery Message-ID: <5123ECBA.6030902@cyberleo.net> In-Reply-To: <5122355E.3040506@egarden.fi> References: <5122355E.3040506@egarden.fi>
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On 02/18/2013 08:06 AM, Jonni Nakari wrote: > It seems, that while testing suspend to RAM on my machine by running > "acpiconf -s 3" I managed to break a RaidZ zpool. The machine went to > sleep fine, but after waking up commands (e.g. reboot) reported I/O > error. When booting after a hard reset the machine fails to mount the > root filesystem: > > Trying to mount root from zfs:/vault/root []... > Mounting from zfs:/vault/root failed with error 5. > > I booted the system from FreeBSD-9.1-RELEASE-amd64-memstick.img and > tried to import the zpool in the shell: > # zpool import -f vault > cannot import 'vault': I/O error > Destroy and re-create the pool from > a backup source. > > Command "zpool import -nfF vault" from the memstick system gives no > output. (I thought it should always give some output?) > > What should I try next to repair the zpool or recover the data? I > started "zpool import -nfFX vault" but it seems to take quite long. > > Some more information about my system: > zpool vault consists of 5 block devices: > whole disks: ada1, ada2, ada3 > cache: ada0s1e > log: ada0s1d > > The system boots from a UFS filesystem ada0s1a. The zpool and rest of > the system was created with FreeBSD 9.1-RELEASE. Does dmesg or syslog show anything with regards to the supposed I/O errors? Do the disks pass a read-only scan or 'long' SMART test? While unlikely, it is possible that one of the devices picked that precise moment to fail. It's also possible a disk did not appreciate being put to sleep; I've had several SSDs that simply stopped responding under such conditions, prompting warranty replacement. -- Fuzzy love, -CyberLeo Furry Peace! - http://www.fur.com/peace/
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