Date: Sat, 13 Jan 2007 09:56:25 -0800 (PST) From: "R. B. Riddick" <arne_woerner@yahoo.com> To: CyberLeo Kitsana <cyberleo@cyberleo.net> Cc: FreeBSD Geom <freebsd-geom@freebsd.org> Subject: Re: geom_raid5 livelock? Message-ID: <20070113175625.51172.qmail@web30305.mail.mud.yahoo.com> In-Reply-To: <45A91A0F.8070701@cyberleo.net>
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--- CyberLeo Kitsana <cyberleo@cyberleo.net> wrote: > Good morning! > Thx. U2! :-) > I'm not sure what error 5 is, but it looks ominous. > That is EIO... Dont know where it comes from. We would know better, if u change the line around 1292 or so from G_RAID5_LOGREQ(bp, "[done]"); to G_RAID5_LOGREQ(bp, "[done err%d]",bp->bio_error); and after line 1160 (the line with = EIO;) G_RAID5_LOGREQ(bp, "[not-equal]"); Then wait for this suspected live lock again and look for messages and then set debug level to 2... > The first log shows two seconds of the first test, where only ad2s2 was > showing up. The second log is after a restart of everything, and ad0s2, > ad2s2, and ad6s2 show up, indicating that this most likely isn't just a > drive, bus, or controller failure. > Possibly... Maybe U need to run a verify manually (graid5 configure -R <device>)... Are u sure, that a complete verify run took place after label'ing the graid5 device? > The machine is on a UPS, so power loss isn't too much of an issue. What > other impacts would reducing kern.geom.raid5.wdt have? > OK - UPS is nice... <wdt> is the number of seconds, graid5 waits before it executes a write request... So lower wdt means, lower chances for write optimization in favor to lower chances for data loss... Btw.: A kernel crash could result in such data loss, too (just like a power failure)... -Arne ____________________________________________________________________________________ 8:00? 8:25? 8:40? Find a flick in no time with the Yahoo! Search movie showtime shortcut. http://tools.search.yahoo.com/shortcuts/#news
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