Date: Thu, 24 Aug 2000 06:50:05 -0700 (PDT) From: Poul-Henning Kamp <phk@critter.freebsd.dk> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/20804: deadlocking when using vnode disk file and quotas Message-ID: <200008241350.GAA63998@freefall.freebsd.org>
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The following reply was made to PR kern/20804; it has been noted by GNATS. From: Poul-Henning Kamp <phk@critter.freebsd.dk> To: Robert Watson <rwatson@FreeBSD.org> Cc: freebsd-gnats-submit@FreeBSD.org, Sheldon Hearn <sheldonh@uunet.co.za> Subject: Re: kern/20804: deadlocking when using vnode disk file and quotas Date: Thu, 24 Aug 2000 15:43:02 +0200 In message <Pine.NEB.3.96L.1000824093709.31571B-100000@fledge.watson.org>, Robe rt Watson writes: > >Poul-Henning, > >Do you have a chance to look at this bug, which was raised on -fs >recently? It has to do, I believe, with a recursive lock/deadlock issue >relating to the md device and the UFS quota implementation, presumably a >lock ordering issue relating to the md device vnode lock and the vnode >lock for the quota data file on that file system. I haven't had a chance >to look much further, and apparently it mostly manifests in jail (I'm not >sure I understand why that might be the case -- possibly having to do with >the starting point (root) for recursive name lookups with lock requests). > >Thanks, > > Robert N M Watson Robert, No I haven't even looked at it. The jail stuff doesn't even know what a lock is, much less touch one, so the jail involvement was not enough to make me put it on my busy schedule... -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD coreteam member | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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