Le mardi 05 octobre 2004 Ã 09:38 -0700, David Kewley a Ãcrit : > 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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