Date: Wed, 09 Jul 2008 14:37:03 +0100 From: aslam_mohamed@wordbank.com To: Kris Kennaway <kris@FreeBSD.org> Cc: Dmitry Morozovsky <marck@rinet.ru>, current@FreeBSD.org Subject: Re: Thinking of using ZFS/FBSD for a backup system Message-ID: <4874BEFF.20202@wordbank.com> In-Reply-To: <4874B58B.7000108@FreeBSD.org> References: <bd9320b30807072315x105cf058tf9f952f0f5bb2a6a@mail.gmail.com> <20080708100701.57031cda@twoflower.in.publishing.hu> <bd9320b30807080131j5e0e02a4y3231d7bfa1738517@mail.gmail.com> <4873C4FA.2020004@FreeBSD.org> <20080709062533.J58331@woozle.rinet.ru> <48749087.4070802@FreeBSD.org> <20080709145010.Q58331@woozle.rinet.ru> <48749EA7.40702@FreeBSD.org> <20080709152739.Q58331@woozle.rinet.ru> <4874A453.7060406@FreeBSD.org> <4874A981.7080106@wordbank.com> <4874B58B.7000108@FreeBSD.org>
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Thanks for your reply. I did get some weired messages like ' vdev failure' just two days before the ZFS pool disappeared, but I don't know whether this is from ZFS or another GEOM issue. I shut the machine down and restarted everything back and got it to do the sync again. Later I noticed zpool status was showing some big numbers like (83, 90 ...) on checksum column. I did the zpool clear and it cleared the numbers. Then I think couple days later the sync process stopped in the middle. When I investigated it, I found that zpool status is not there. I think the firewire/FreeBSD could be a potential contributor to this problem. Now I am trying to recover the backup data (if there is any in external disks!!) by connecting the external disks to SUN Solaris and getting the SUN/ZFS to see the pool!!!.. I cant think of any other ways to recover the backup!!!.. Aslam Kris Kennaway wrote: > aslam_mohamed@wordbank.com wrote: >> Hi, >> I have been using FreeBSD/ZFS for our backup system for last few >> months.. We had 6TB external disks connected through Firewire to the >> Server. Last week all the backup data disappeared along with the pool >> and everything!!!..When I typed zpool status - it says no pool >> available..Build up to this incident has always been a firefighting >> situation for me. We use Rsync to sync all the servers to FreeBSD's >> ZFS pool everyday. Most of the time Rsync hung on the middle of the >> syncing process. When this happen I have to restart the server to >> run the backup again and mount the ZFS pool (it requires manual >> mounting most of the time!!). Sometimes it throws some error like - >> GEOM: da0: corrupt or invalid GPT detected. >> GEOM: da0: GPT rejected -- may not be recoverable. >> GEOM: da1: corrupt or invalid GPT detected. >> GEOM: da1: GPT rejected -- may not be recoverable >> I don't know what caused the disappearance of the ZFS pool and if >> someone could explain how I can retrieve the data from the external >> disks, that would be really helpful?.. > > What you pasted says that the disks were rejected by GEOM because the > partition table was "corrupt or invalid". I don't know for sure why > this might be, but one possible cause would be if there is data > corruption in your I/O path. Do you get errors from ZFS about > checksum failures or other errors? Maybe there is a problem with the > firewire stack, or support for your firewire hardware. > > The rsync hanging is almost certainly either for the same memory > reasons we have been discussing, or a side effect of I/O problems to > the disks. > > Kris > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to > "freebsd-current-unsubscribe@freebsd.org"
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