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To: Archie Cobbs <archie@dellroad.org>
Subject: Re: backgroud fsck is still locking up system (fwd) 
Cc: Nate Lawson <nate@root.org>, freebsd-current@FreeBSD.org
In-Reply-To: Your message of "Fri, 06 Dec 2002 15:23:36 PST."
             <200212062323.gB6NNax4066877@arch20m.dellroad.org> 
Date: Fri, 06 Dec 2002 17:29:49 -0800
From: Kirk McKusick <mckusick@beastie.mckusick.com>
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    From: Archie Cobbs <archie@dellroad.org>
    Subject: Re: backgroud fsck is still locking up system (fwd)
    In-Reply-To: <200212062205.gB6M5q59093906@beastie.mckusick.com>
    To: Kirk McKusick <mckusick@beastie.mckusick.com>
    Date: Fri, 6 Dec 2002 15:23:36 -0800 (PST)
    CC: Archie Cobbs <archie@dellroad.org>, Nate Lawson <nate@root.org>,
       freebsd-current@FreeBSD.org
    X-ASK-Info: Whitelist match

    Kirk McKusick wrote:
    > OK, it looks like my hypothesis on having a small number of buffers 
    > and running out of them is the problem. I enclose below a patch which
    > should check for the problem arising and help to mitigate it. I
    > would appreciate you dropping it into your kernel and seeing if
    > it solves your problem. The fix is not ideal, but merely to see
    > if it solves this problem. If it does, I will figure out how to
    > do it properly. Thanks for your help.

    Yep, that fixes it. Now I just get the usual sluggishness while the
    background fsck runs (which is not too bad), but it eventually
    finishes and then all is well.

    Thanks,
    -Archie

    __________________________________________________________________________
    Archie Cobbs     *     Packet Design     *     http://www.packetdesign.com

Thanks for verifying that the idea works. I will attempt to figure
out how to do it correctly and submit a proposed fix.

	Kirk McKusick

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