EVMS, LVM, LVM2, XFS, ext3 on FC3
Matias Féliciano
feliciano.matias at free.fr
Tue Oct 5 17:22:43 UTC 2004
Le mardi 05 octobre 2004 à 09:38 -0700, David Kewley a écrit :
> I'm looking at building several multi-TB arrays in an academic research
> environment. So far I've been heading toward FC3 (or possibly RHEL4 when
> it's released), EVMS, and XFS.
>
> I've seen little or no mention of EVMS in the Fedora and RHEL communities, and
> I'm wondering why that is.
Red Hat has acquired Sistina (developers of lvm2, ...) :
http://www.redhat.com/about/presscenter/2003/press_sistina.html
> From reading websites & mailing list archives, it
> seems to me like EVMS is more mature than LVM2, and more fully-featured than
> either LVM or LVM2. I've not actually used any of the three yet.
>
> Today I'm patching the FC3t2 kernel (541) with the patches (mostly DM patches)
> recommended on the EVMS website http://evms.sourceforge.net/install/, and
> it's going quite smoothly. So far only the first patchfile in the udm1
> patchset didn't apply, because it's already applied in FC3t2 kernel 541. A
> similar patching attempt yesterday on FC1 was miserable (I expect no one will
> be surprised at that :).
>
> Is there a good reason to use LVM or LVM2 rather than EVMS? Is there a reason
> EVMS isn't included in FC?
>
> On to filesystems. I saw some commentary by Arjan on the RHEL4 beta list
> http://www.redhat.com/mailman/listinfo/nahant-beta-list suggesting that there
> is no good, known reason to use XFS in RHEL4 (and presumably FC3?), because
> ext3 has been patched to provide significantly better performance, and online
> resize of ext3 is being actively worked on. Indeed those are the two obvious
> issues that I care about, so I'm considering going with ext3 rather than XFS.
>
> Can anyone think of a reason to use XFS over ext3, even with the improvements
> that Arjan mentioned? Maybe XFS scales better still, or provides a
> significant advantage in filesystem size on 64-bit architectures, compared to
> ext3?
>
> David
>
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