Date: Thu, 18 Feb 1999 13:45:09 -0800 From: Cy Schubert <cschuber@uumail.gov.bc.ca> To: Ted Spradley <tsprad@set.spradley.tmi.net> Cc: Bjoern Fischer <bfischer@Techfak.Uni-Bielefeld.DE>, Matthew Dillon <dillon@apollo.backplane.com>, freebsd-stable@FreeBSD.ORG Subject: Re: no dirty bufs panics any more... Message-ID: <199902182145.NAA15154@passer.osg.gov.bc.ca> In-Reply-To: Your message of "Thu, 18 Feb 1999 10:42:16 CST." <199902181642.KAA10670@set.spradley.tmi.net>
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Another comment and a question:
Has anyone tried manually unmounting an MFS filesystem? Does the
system panic?
Looking at ffs_unmount(), defined by MFS for MFS unmounts, it calls
ffs_flusfiles(). My question is, why flush files in an MFS
filesystem in the first place? They'll be gone once the MFS
filesystem is unmounted anyway. Mind you, I haven't seriously
considered the possibility of an MFS filesystem being union mounted
on top of some other filesystem like UFS or NFS. Even then changes
made to existing files would be written to the MFS filesystem and
be lost once the filesystem has been unmounted, so it may not be
anything to worry about. Since I don't fully understand all of the
ramifications of what I'm suggesting, maybe one of the FreeBSD
wizards might want to clue me in to what's really going on under
the covers.
Regards, Phone: (250)387-8437
Cy Schubert Fax: (250)387-5766
Open Systems Group Internet: Cy.Schubert@uumail.gov.bc.ca
ITSD Cy.Schubert@gems8.gov.bc.ca
Province of BC
In message <199902181642.KAA10670@set.spradley.tmi.net>, Ted
Spradley writes:
>
> > since I stopped using an MFS as /tmp on the server, the `dirty bufs'
> > panics on server shutdown went away. Should this give us a strong
> > hint where to look for the errnous code?
>
> Hmmmm.... I'm getting this, too:
>
> syncing disks... 3 done
> panic: vinvalbuf: dirty bufs
> Automatic reboot in 15 seconds - press a key on the console to abort
>
> I'm using MFS for /tmp, but I'm running 4.0 (current from ~a week ago) on a D
> EC AlphaStation 200. Just another datapoint.
>
>
>
>
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