Date: Tue, 18 Jul 2017 22:13:19 +0300 From: =?UTF-8?B?0JDQu9C10LrRgdCw0L3QtNGAINCf0L7QstC+0LvQvtGG0LrQuNC5?= <tarkhil@webmail.sub.ru> To: freebsd-fs@freebsd.org Subject: Re: How can I recover data from a faulted pool? Message-ID: <ce16cbec-71a1-e615-26fc-fec5a6ac282d@webmail.sub.ru> In-Reply-To: <b7c3f089-963d-a23a-7bbe-ab1a450acd27@b1t.name> References: <7e3d874e-e051-1169-2111-b8f2549f89ee@webmail.sub.ru> <b7c3f089-963d-a23a-7bbe-ab1a450acd27@b1t.name>
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Everything is fine. The problem was in mounting order, so I did not see files. And I could not think properly because of tooth pain)) 15.07.2017 16:52, Volodymyr Kostyrko пишет: > Александр Поволоцкий wrote: >> Hello >> >> FreeBSD 10.3. ZFS. >> >> # zpool status >> pool: database >> state: UNAVAIL >> status: One or more devices are faulted in response to persistent >> errors. There are insufficient replicas for the pool to >> continue functioning. >> action: Destroy and re-create the pool from a backup source. Manually >> marking the device >> repaired using 'zpool clear' may allow some data to be >> recovered. >> scan: none requested >> config: >> >> NAME STATE READ WRITE CKSUM >> database UNAVAIL 0 0 0 >> mirror-0 UNAVAIL 0 0 0 >> gpt/database0 FAULTED 0 0 0 too many errors >> gpt/database1 FAULTED 0 0 0 too many errors >> >> disks can be read, can I somehow recover data from the pool? > > For sure... First please describe what happened to both disks and what > hardware you were using (chipset/controller). Please don't try to > `zpool clear` yet. > > 1. ZFS *HEAVILY* relies on hardware to be stable, any hardware > glitches may result in severe pool corruption. If you have any doubts > in hardware first move the disks to the trusted box. > > 2. I assume both mirror parts were on different disks? ZFS doesn't > like pools that have more then one chunk on any drive. > > 3. Try mounting pool R/O with transaction recovery. While this is > mirror please do this for both disks and give it another try for > single disks as results may differ: > > `zpool import -N -O readonly=on -f -R /mnt/somezpoool …` > > You can use mfsBSD for that. > > If that doesn't help try: > > `zpool import -N -O readonly=on -f -R /mnt/somezpoool -Fn …` > > Both commands will try to import the pool without mounting file > systems in r/o mode. If that would work, try mounting only required > filesystem and copy some data from it. > > Please post your results. >
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