Date: Wed, 17 Nov 2004 15:32:13 -0500 From: David Gilbert <dgilbert@dclg.ca> To: Julian Elischer <julian@elischer.org> Cc: David Gilbert <dgilbert@dclg.ca> Subject: Re: Snapshot corruption. Message-ID: <16795.46413.508033.379777@canoe.dclg.ca> In-Reply-To: <419BB453.70205@elischer.org> References: <16795.43373.413946.559615@canoe.dclg.ca> <419BB453.70205@elischer.org>
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>>>>> "Julian" == Julian Elischer <julian@elischer.org> writes: Julian> David Gilbert wrote: >> I've got a medium busy server (few thousand mail messages a day, >> web, webmail, imap, etc) that I can fairly reliably reproduce >> filesystem corruption by creating multiple snapshots and deleting >> them. >> >> I don't think I'm up to debugging this, but I may be able to >> provide an exercise platform. Julian> can you characterise the corruption? Sure. Typically the system will crash with an ffs panic of some random type. When it comes back, we run non-background fsck's because manual fsck is sometimes required. Corruption varies. Some stuff sometimes pops up in lost+found. Some stuff can vanish (not 100% positive on that). But most worringly, is that some files come back corrupted (ie berkley db files that db won't read). Dave. -- ============================================================================ |David Gilbert, Independent Contractor. | Two things can only be | |Mail: dave@daveg.ca | equal if and only if they | |http://daveg.ca | are precisely opposite. | =========================================================GLO================
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