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Date: Thu, 6 Aug 2009 16:36:26 -0400 From: Valerie Aurora <vaurora@...hat.com> To: Nick Dokos <nicholas.dokos@...com> Cc: linux-ext4@...r.kernel.org Subject: Re: ll_ver_fs data verification failure - 96TB fs On Mon, Aug 03, 2009 at 09:54:36AM -0400, Nick Dokos wrote: > Just a heads-up for now. I ran ll_ver_fs on a 96TB fs - the write phase > finished without problems, but the read phase encountered a problem: > > ... > read File name: /mnt/dir00373/file026 > > liverfs: verify /mnt/dir00373/file026 failed offset/timestamp/inode 3244298240/1248819541/1096796: found 3243249664/1248819541/1096796 instead > > liverfs: Data verification failed > 770.45user 218639.65system 67:38:18elapsed 90%CPU (0avgtext+0avgdata 0maxresident)k > 100357573552inputs+195522668184outputs (1major+414minor)pagefaults 0swaps > make: *** [llver] Error 2 > > > The offset difference is exactly 1M, and it occurs about 3GB into the file. Just a note, this is an off-by-one rather than a bit flip: obase=2 3244298240 11000001011000000001000000000000 3243249664 11000001010100000001000000000000 -VAL -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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