Date: Sun, 4 Jul 2010 15:39:43 +0200 From: Bernd Walter <ticso@cicely7.cicely.de> To: Volodymyr Kostyrko <c.kworr@gmail.com> Cc: freebsd-fs@freebsd.org Subject: Re: Help with Faulted zpool Message-ID: <20100704133943.GG16689@cicely7.cicely.de> In-Reply-To: <i0prse$4h9$1@dough.gmane.org> References: <AANLkTill2JAgt-UXTIzJHvXf_6Rbp95w01t5hQWwuoK0@mail.gmail.com> <i0prse$4h9$1@dough.gmane.org>
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On Sun, Jul 04, 2010 at 02:38:54PM +0300, Volodymyr Kostyrko wrote: > 04.07.2010 00:12, Sam Fourman Jr. ??????????????(????): > >Hello list, > > > >I have a File server that runs FreeBSD 8.1 (zfs v14) > >after a poweroutage, I am unable to import my zpool named Network > >my pool is made up of 6 1TB disks configured in raidz. > >there is ~1.9TB of actual data on this pool. > > > >FreeBSD does not have many option for restoring a pool from corrupt meta > >data > > > > > >I have loaded OpenSolaris svn_134 on a septate boot disk, > >in hopes of recovering my zpool. > > > >on Opensolaris 134, I am not able to import my zpool > >almost everything I try gives me cannot import 'Network': I/O error > > > >I have done quite a bit of searching, and I found that import -fFX > >Network should work > >however after ~ 20 hours this hard locks Opensolaris (however it does > >return a ping) > > > >here is a list of commands that I have run on Open Solaris > > > >http://www.puffybsd.com/zfsv14.txt > > > >if anyone could help me use zdb or mdb to recover my pool > >I would very much appreciate it. > > > >I believe the metadata is corrupt on my zpool > > Just sharing the knowledge, you know... > > Some time ago my primary file server suffers from controller damage. > When ZFS tried to fix metadata controller was able to write most of it > failing to complete full restore. Thus I've got pool with two or more > recent snapshots broken. FreeBSD (RELENG_8) dumps core when trying to > import pool. OpenSolaris (last version available, i think with ZFSv22) > was giving the same result. > > I've managed to recover all data from pool using single user mode. This > way when I got shell ZFS already knows about my pool, but no are > mounted. From this point it's possible to mount each dataset RO and copy > all data from it to another disk. You will face the kernel coredump only > in case of some dataset metadata would be heavily damaged. I've had a similar expirience long time ago. Mounting a special FS let the system fall into endless disk excercise, which I waited for more about one day before I gave up. But it was possible to clone an earlier snapshot of the FS and mount this one. > All you need is: > 1. Original zpool.cache with which your pool was imported. > 2. ZFS module loaded. > 3. Break into single user. > > -- > Sphinx of black quartz judge my vow. > > _______________________________________________ > freebsd-fs@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-fs > To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org" -- B.Walter <bernd@bwct.de> http://www.bwct.de Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.
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