On Wed, Apr 13, 2011 at 11:55:08PM -0400, Ross Walker wrote:
> On Apr 13, 2011, at 9:40 PM, Brandon Ooi <brandono@xxxxxxxxx> wrote:
>
> > On Wed, Apr 13, 2011 at 6:04 PM, Ross Walker <rswwalker@xxxxxxxxx> wrote:
> > >
> > > One was a hardware raid over fibre channel, which silently corrupted
> > > itself. System checked out fine, raid array checked out fine, xfs was
> > > replaced with ext3, and the system ran without issue.
> > >
> > > Second was multiple hardware arrays over linux md raid0, also over fibre
> > > channel. This was not so silent corruption, as in xfs would detect it
> > > and lock the filesystem into read-only before it, pardon the pun, truly
> > > fscked itself. Happened two or three times, before we gave up, split up
> > > the raid, and went ext3, Again, no issues.
> >
> > Every now and then I hear these XFS horror stories. They seem too
> > impossible to believe.
> >
> > Nothing breaks for absolutely no reason and failure to know where
> > the breakage was shows that maybe there wasn't adequately skilled
> > techinicians for the technology deployed.
> >
> > XFS if run in a properly configured environment will run flawlessly.
Here's some deconstruction of your argument:
"... and failure to know where the breakage was shows that maybe there
wasn't adequately skilled techinicians for the technology deployed"
This is blaming the victim. One must have the time, skills and
often other resources to do root cause analysis.
"XFS if run in a properly configured environment will run flawlessly."
I think a more narrowly qualified opinion is appropriate: "XFS,
properly configured, running on perfect hardware atop a perfect
kernel, will have fewer serious bugs than it had on Jan 1, 2009."
Here's a summary of XFS bugzilla data from 2009 through today:
Bug Status
Severity
NEW ASSIGNED REOPENED Total
blocker 3 . . 3
critical 10 2 . 12
major 48 2 . 50
normal 118 46 3 167
minor 26 3 . 29
trivial 7 . . 7
enhancement 39 9 1 49
Total 251 62 4 317
See also the XFS mailing list for a big dose of reality. Flawlessly
is not the label I would use for XFS. /Maybe/ for Ext2.
--
Charles Polisher
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