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Re: Fedora 10 - Boot Analysis

nodata wrote:
> Am Montag, den 15.12.2008, 16:58 +0100 schrieb Harald Hoyer:
>> Eric Sandeen wrote:
>>>> Turning off bootchart: 30s
>>>> So all in all we have nearly accomplished the 30 Second Startup Feature 
>>>> http://fedoraproject.org/wiki/Features/30SecondStartup.
>>> Well, no; not if this requires data=writeback.  We can't ship that way,
>>> it's a potential security hole.  You don't want someone's maildir
>>> suddenly containing pieces of /etc/shadow or whatnot.  The old data that
>>> may be exposed by data=writeback may not belong to that user.
>>> -Eric
>> So, we switch to xfs as the default FS? :-)
> XFS has a nasty bug where it will leave files full of zeros on disk in a
> crash.

No, it doesn't.  Not any more (and technically not ever; what happened
was a truncate & extension of the file (like vi might do) led to a size
on disk but no extents so you got a sparse file.  If the apps looked
after their data as they should, this wouldn't happen either, but that's
just an aside).

But anyway,


> I think it was Alan Cox that said this could be fixed quite easily by
> changing the write ordering for XFS, but that someone who was willing to
> maintain the patch would need to do it.
> If this was merged I would love to move to XFS :)

Go for it.


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