Date: Wed, 1 Apr 2009 08:46:55 +0200 From: Hans Petter Selasky <hselasky@c2i.net> To: freebsd-current@freebsd.org Cc: Damian Gerow <dgerow@afflictions.org> Subject: Re: ZFS checksum errors on USB attach (Was: ZFS data error without reasons) Message-ID: <200904010846.55770.hselasky@c2i.net> In-Reply-To: <20090401044011.GA51164@plebeian.afflictions.org> References: <49BD117B.2080706@163.com> <20090331100328.H46640@rust.salford.ac.uk> <20090401044011.GA51164@plebeian.afflictions.org>
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On Wednesday 01 April 2009, Damian Gerow wrote: > Mark Powell wrote: > : > the problem can be solved - The weird thing is that it will give CRC > : > errros (and permenent errors) in blocks that has not been touched (or > : > at least I think so) > : > : Can you be a little clearer? Perhaps some zpool status output with the > : steps you've taken? > > I've run into this problem four times in the past week or so. I haven't > reliably been able to reproduce it (which isn't /that/ upsetting; I don't > much like data loss, even if I can predict it), but my current hunch is > that it has something to do with uptime: the longer the system is up, the > more likely the bug is to trigger. > > Here's what happened an hour ago: > > I walked over to my laptop (Lenovo X200), and plugged in a Cowon D2 to > charge up the battery. When I tried to do other things, I received a large > number of input/output errors, so I knew I'd triggered the bug. Two things > that I tried to do: If you unload "umass" and plug a memory stick, do you see the same behaviour then? Maybe it is not directly USB related. --HPS
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