Date: Wed, 27 Jun 2007 15:16:26 +0400 From: Anton Yuzhaninov <citrin@citrin.ru> To: stable@freebsd.org Subject: vfs/bio livelock on 6.2 Message-ID: <837624448.20070627151626@citrin.ru>
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Hello, After repair table for big (~3 Gb) fragmented (varchars) table system was entered the livelock. (repair of fragmented table case huge number of small pread/pwrite). In livelock all processes respond with delay 60-120 seconds (it seems than almost all syscalls delayed). mysql don't stop in more than hour after kill top show almost all processes in flswai state. On console was seen messages like: g_vfs_done():da2[WRITE(offset=xxx, length=xxx)]error=6 gstat show ~30k writes/s and 800 Mb/s for da2 on da2 located mysql data files. System was rebooted after ~16 hours in this state. Problems seems to be identical to this: http://docs.FreeBSD.org/cgi/mid.cgi?20010907202924.A6811 Environment: 6.2-RELEASE-p3 i386, SMP Kernel Adaptec AIC7902 Ultra320 SCSI adapter da2 - IBM DDYS-T18350M S93E Any suggestions? -- Anton Yuzhaninov.
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