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DragonFly bugs List (threaded) for 2006-02
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Re: busy buffer problem on HEAD

From: Richard Nyberg <rnyberg@xxxxxxxxxxxxx>
Date: Tue, 21 Feb 2006 12:24:46 +0100

At Mon, 20 Feb 2006 12:15:35 -0800 (PST),
Matthew Dillon wrote:
>     Hmm.  There was some bad code pre-patch that I removed that was probably
>     handling that case.  The real problem is that the nfsd processes are 
>     getting wiped out by the shutdown before all the buffers are flushed.
>     It's kind of a chicken and egg problem.

This is a nfs client so it does not run nfsd, but perhaps you mean something

>     This patch might not be quite sufficient, but I'd like you to try it
>     anyhow.  It only counts buffers that are undergoing I/O as 'busy' (which
>     is what the original code did), but unlike the original code I don't
>     try to remove the mount point so its possible that the shutdown sequence
>     will block a little further on when it tries to unmount the filesystems.

It seems to work. The system stays on the "syncing disks" line a while but
otherwise reboots fine.


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