Date: Mon, 2 Aug 2004 08:53:52 +0200 From: Pawel Jakub Dawidek <pjd@FreeBSD.org> To: Sam Lawrance <boris@brooknet.com.au> Cc: freebsd-current@freebsd.org Subject: Re: processes freezing when writing to gstripe'd device Message-ID: <20040802065352.GM39839@darkness.comp.waw.pl> In-Reply-To: <20040802063851.GL39839@darkness.comp.waw.pl> References: <1091411071.922.20.camel@dirk.no.domain> <20040802063851.GL39839@darkness.comp.waw.pl>
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[-- Attachment #1 --] On Mon, Aug 02, 2004 at 08:38:51AM +0200, Pawel Jakub Dawidek wrote: +> +> What's the best way to look in to this? I can't attach to rm with gdb +> +> (it just ends up waiting for something). I can drop to kdb, but have no +> +> idea where to go from there. +> +> You could use 'ps' command from DDB to which processes are alseep. +> Then you can run 'tr <PID>' where <PID> is PID of sleeping process. +> Look for processes related somehow to this problem. +> +> It'll be also great if you can provide exact procedure which will also +> me to reproduce this problem. +> +> PS. If you plan to upgrade your machine, remember than naming has changed +> in gstripe from /dev/<name>.stripe to /dev/stripe/<name>. One more note. I'm quite sure it is not related to gstripe, because its implementation is very simple: it doesn't use [mt]sleep(9) (so there is no missing wakeup()), it doesn't use any mutexes, so while debugging you may want also look at other components. -- Pawel Jakub Dawidek http://www.FreeBSD.org pjd@FreeBSD.org http://garage.freebsd.pl FreeBSD committer Am I Evil? Yes, I Am! [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (FreeBSD) iD8DBQFBDeUAForvXbEpPzQRAvcpAJ9+/7pECUm41+mRPiUtLACkx2X0PQCcDWBR OvGGO3RwGTHR9XzINnhhUls= =5RFD -----END PGP SIGNATURE-----
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