Date: Tue, 8 Apr 2008 09:37:57 +0200 From: =?ISO-8859-1?Q?Johan_Str=F6m?= <johan@headweb.com> To: Jeremy Chadwick <koitsu@freebsd.org> Cc: freebsd-fs@freebsd.org, freebsd-stable@freebsd.org Subject: Re: ZFS deadlock Message-ID: <DF0C2618-81C0-418D-9D82-84321FF2587B@headweb.com> In-Reply-To: <20080408073200.GA32128@eos.sc1.parodius.com> References: <0B67CBBD-11CB-44C2-807D-5F00654CDD35@headweb.com> <20080408073200.GA32128@eos.sc1.parodius.com>
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On Apr 8, 2008, at 9:32 AM, Jeremy Chadwick wrote: > On Tue, Apr 08, 2008 at 08:17:38AM +0200, Johan Str=F6m wrote: >> Hello >> >> A box of mine running RELENG_7_0 and ZFS over a couple of disks (6 =20= >> disks, 3 >> mirrors) seems to have gotten stuck. =46rom Ctrl-T: >> >> load: 0.50 cmd: zsh 40188 =20 >> [zfs:&buf_hash_table.ht_locks[i].ht_lock] 0.02u >> 0.04s 0% 3404k >> load: 0.43 cmd: zsh 40188 =20 >> [zfs:&buf_hash_table.ht_locks[i].ht_lock] 0.02u >> 0.04s 0% 3404k >> load: 0.10 cmd: zsh 40188 =20 >> [zfs:&buf_hash_table.ht_locks[i].ht_lock] 0.02u >> 0.04s 0% 3404k >> load: 0.10 cmd: zsh 40188 =20 >> [zfs:&buf_hash_table.ht_locks[i].ht_lock] 0.02u >> 0.04s 0% 3404k >> load: 0.11 cmd: zsh 40188 =20 >> [zfs:&buf_hash_table.ht_locks[i].ht_lock] 0.02u >> 0.04s 0% 3404k >> >> Worked for a while then that stopped working too (was over ssh). When >> trying a local login i only got >> >> load: 0.09 cmd: login 1611 [zfs] 0.00u 0.00s 0% 208k >> >> I found one post like this earlier (by Xin LI), but nobody seemed =20 >> to have >> replied... >> in my current conf, I think my kmem/kmem_max is at 512Mb (not sure =20= >> though, >> since I've edited my file yesterday for next reboot), with 2G of =20 >> system >> RAM.. Normally I'd run kmem(max) 1G (with arcsize of 512M. =20 >> currently it is >> at default), but since I just got back to 2G total mem after some =20 >> hardware >> problems I've been runnig at those lows (1G total is kindof tight =20 >> with >> zfs..) >> >> Well, just wanted to report... The box is not totally dead yet, ie =20= >> I can >> still do Ctrl-T on console, but thats it.. I don't really know what =20= >> more I >> can do so.. I don't have KDB/DDB. >> I'll wait another hour or so before I hard reboot it, unless it =20 >> "unlocks" >> or if anyone have any suggestions. > > I don't think there are any suggestions left to give. Many people, > including myself, have experienced this kind of problem. It's well- > documented both on my Common Issues page, and the official FreeBSD ZFS > Wiki. Ah.. I guess I was just to restrictive with the googling on =20 "zfs:&buf_hash_table.ht_locks[i].ht_lock". > > > ZFS is still considered highly experimental, so if your data is at all > important to you, perform backups or switch to another filesystem > provider. That I am aware of. Thanks.=
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