ext2->ext3

[David A. Bandel]

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On Fri, 20 Dec 2002 12:13:00 -0500 (EST)
begin  Net Llama! <netllama at linux-sxs.org> spewed forth:

> On Fri, 20 Dec 2002, David A. Bandel wrote:
> > Well, I just went through my first major XFS problem.  Let me just say
> > XFS performed beautifully.  If it were ext2, I'd have been rebuilding
> > the system.
> >
> > Seems some morons from the power company decided to replace main lines
> > in a building without telling anyone.  Well, the resulting spikes
> > fried a monitor and scrambled the Linux system.  It wouldn't boot
> > (lots of errors about not being able to run /sbin/getty, etc.).
> >
> > Booted into Knoppix and tried to mount the partition -- it froze.
> > Rebooted, ran xfs_check.  What a mess, but it fixed a lot of stuff.
> > Mounted the partition (the journal played and restored things just
> > fine). umounted the partition and ran xfs_repair.  Lots more fixing. 
> > Rebooted and things seem to be even better than before (if that's
> > possible).
> >
> > XFS came through with flying colors.  Not sure any others (and
> > definitely not ext2) would have.
> >
> > BTW, all the above took less than 5 minutes including booting into
> > Knoppix twice.  The partition was 6Gb.  That's fast.
> 
> I'm actually kinda surprised that you had to go through that much
> trouble. Whenever i've done 'sudden power loss' simulations with my XFS
> boxes, they've come back up without any manual intervention.  Was this
> box under a heavy load at the time of the outage?  Which kernel and
> version of XFS are you running?

Lonnie, this was no "sudden power loss", and this box was under a fairly
heavy load at the time.  Note that the power spike that fried the monitor
ran through the UPS the box was connected to (the monitor is usually off,
but was on at this particular time and connected to the same UPS the
system was).  That was one helluva spike -- beat the clamping time of the
UPS with a fast enough, high enough spike to fry a monitor (fly-back
transformer's dead).  I'm surprised the system survived, although it does
have a fairly heavy-duty power supply.  But that kind of abuse is liable
to scramble any file system.

kernel 2.4.18-xfs and running the latest (when installed and apparently
still the latest) patch and tools -- version 2.0.x of each.

Ciao,

David A. Bandel
- -- 
Focus on the dream, not the competition.
		-- Nemesis Racing Team motto
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