Re: Opinions on ext3 vs XFS vs reiserfs for LAMP server
On Fri, 2007-08-24 at 08:10 -0700, michael@estone.ca wrote:
> Quoting Jim Crilly <jim@why.dont.jablowme.net>:
>
> >> I tested the exact same thing again but waited 60 seconds after saving
> >> the file, and then yanked the power out. Upon a boot up, the file was
> >> intact and the save worked. So you still have about a 60 second window
> >> of newly written files and a power loss for data corruption, unless
> >> the program can sync it to disk before that.
> >>
> >
> > Well I'm only passing on what the XFS devs have said, all of my boxes are
> > on UPSes so I rarely saw the issue anyway. But are you sure the squares you
> > saw in the word doc were nulls? The FAQ page says that you can use the
> > xfs_bmap command to see if it has any extents allocated and if it does then
> > it would likely be another issue.
> >
>
> I'm not sure.
> I'm thinking the nulls thing is indeed fixed, but perhaps its still
> something different than the very nature of XFS. My understanding is
> limited of its mechanics, but since XFS will never journal data, only
> meta-data, then won't there always be the chance that a file can get
> corrupted on a timely power loss?
>
> UPS is a good buddy of mine too. :)
I'd trust XFS with my data, but we have an expensive support contract
with SGI, and it's sub-optimal to use their volume management tool (XVM)
without XFS
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