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Re: kern/40210: 5.0 BETA WAPBL related crash
The following reply was made to PR kern/40210; it has been noted by GNATS.
From: Andrew Doran <ad%netbsd.org@localhost>
To: Juraj Hercek <nbsd%hck.sk@localhost>
Cc: gnats-bugs%NetBSD.org@localhost, kern-bug-people%netbsd.org@localhost,
Subject: Re: kern/40210: 5.0 BETA WAPBL related crash
Date: Fri, 19 Dec 2008 10:43:31 +0000
On Thu, Dec 18, 2008 at 09:43
:44AM +0100, Juraj Hercek wrote:
> Andrew Doran wrote:
> >The following reply was made to PR kern/40210; it has been noted by GNATS.
> > On Wed, Dec 17, 2008 at 04:45:00PM +0000, nbsd%hck.sk@localhost wrote:
> > > /local/mnt on /mnt type null (hidden, local)
> > > /dev/sd0p on /mnt/data type ffs (log, local)
> > ...
> > > ffs_full_fsync() at netbsd:ffs_full_fsync+0x3d1
> > > spec_fsync() at netbsd:spec_fsync+0x59
> > What type of file system is /dev on?
> It's tmpfs:
> # mount | grep "\/dev "
> tmpfs on /dev type tmpfs (union, local)
Ok, this is the problem. ffs' VFS_FSYNC() is not working correctly for
WAPBL when ufsmount::um_devvp is not on an ffs file system.
> I'm just not sure why there's an union flag. Isn't union considered
union mounts and unionfs are two different things. union mounts work well.
The union file system is a bag of spanners.
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