Date: Wed, 25 Mar 2009 17:41:39 +0800 From: kevin <kevinxlinuz@163.com> To: Mark Powell <M.S.Powell@salford.ac.uk> Cc: freebsd-current@freebsd.org Subject: Re: ZFS data error without reasons Message-ID: <49C9FC53.8070104@163.com> In-Reply-To: <20090325090456.G92412@rust.salford.ac.uk> References: <49BD117B.2080706@163.com> <4F9C9299A10AE74E89EA580D14AA10A635E68A@royal64.emp.zapto.org> <49BE4EC1.90207@163.com> <20090325090456.G92412@rust.salford.ac.uk>
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Mark Powell wrote: > Kevin, > Did you fix your ZFS CRC errors? > I responded to your thread, but no-one got back to me. > I'm gonna start another thread later. > This time I re-made the zpool in 8 compatible with 7. Once the errors > started showing up in 8 I moved back to 7, on the same hardware, to > perform the scrub to prove the problem is with 8. The 1st scrub in 7 > found some errors, but of course it would if 8 had messed up the data. > Removed the few unimportant bad files (all were in snapshots). > Just performing the 2nd scrub in 7 now. If this comes back with no > errors, then we have stronger proof that there is some wrong, which > seems quite intermittent, in 8 that randomly writes bad data. > Cheers. > Yes，I can fix some ZFS CRC errors,and sometimes i can recover all error files.Before i run "zpool import backup" to mount the zpool on a usb hard disk, "zpool status" return no errors. When i copy files to the usb hard disk,soon I can get lots of file errors.After a reboot,if i run scrub,i can fix many errors. I just think copy files between two zpools, one is on local hard disk and the other one is on a usb hard disk, may easily reproduce the bug. Thanks, Kevin
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