Date: Fri, 12 Mar 2010 09:10:35 +0100 From: Alexander Leidinger <Alexander@Leidinger.net> To: Borja Marcos <borjam@sarenet.es> Cc: freebsd-fs@FreeBSD.org, Pawel Jakub Dawidek <pjd@FreeBSD.org>, FreeBSD@FreeBSD.org, Stable <freebsd-stable@FreeBSD.org> Subject: Re: Many processes stuck in zfs Message-ID: <20100312091035.961823cwec0rxijo@webmail.leidinger.net> In-Reply-To: <35ADB9B1-F571-4EE4-9089-5363ACEBE159@sarenet.es> References: <864468D4-DCE9-493B-9280-00E5FAB2A05C@lassitu.de> <20100309122954.GE3155@garage.freebsd.pl> <EC9BC6B4-8D0E-4FE3-852F-0E3A24569D33@sarenet.es> <20100309125815.GF3155@garage.freebsd.pl> <CB854F58-03AF-46DD-8153-85FA96037C21@sarenet.es> <BFF1E2D6-B48A-4A5E-ACEE-8577FDB07820@sarenet.es> <20100310110202.GA1715@garage.freebsd.pl> <E04F91AA-B2C4-4166-A24A-74F1BEF01519@sarenet.es> <20100310173143.GD1715@garage.freebsd.pl> <20100311084527.2934034895hvgxaw@webmail.leidinger.net> <764BD545-B86C-47DC-9004-964EB2216AF0@sarenet.es> <20100311150822.107231cvjvgs9gsg@webmail.leidinger.net> <35ADB9B1-F571-4EE4-9089-5363ACEBE159@sarenet.es>
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Quoting Borja Marcos <borjam@sarenet.es> (from Thu, 11 Mar 2010 18:26:09 +0100): > Of course CPUs have bugs, I don't doubt it. I was just wondering how > I coud reproduce the problem with a different hardware :) That's why > I said it was unlikely. > > Besides, such a low level fault should produce many more problems > than such a well defined failure mode, as far as I know. In my case I had a 7.1 system which was running fine. After updating to 7.2 I got deadlocks after some minutes with UFS. Switching to ZFS for the main data partition extended the lifetime to 3-4 hours. After updating ZFS in 7-stable with the code from 8-stable this was extended to 6 hours (periodic daily triggered the problem faster), and after switching to exclusive locks instead of shared locks in ZFS the system survived a night with several jails running periodic daily (but I had to reboot in the morning because apache was not able to serve data anymore). Everything else was working correctly. I would say this was a very narrow problem case. Bye, Alexander. -- Adult, n.: One old enough to know better. http://www.Leidinger.net Alexander @ Leidinger.net: PGP ID = B0063FE7 http://www.FreeBSD.org netchild @ FreeBSD.org : PGP ID = 72077137
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