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Richard Freeman <rich0@g.o> posted 4979F593.4010108@g.o, |
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excerpted below, on Fri, 23 Jan 2009 11:51:31 -0500: |
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> If you want to think really long term take a look at btrfs. |
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I am. I'm looking at it much as I was looking at reiser4 some years ago, |
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but it has already passed the hurdle reiser4 couldn't. As well, Chris |
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Mason ended up the maintainer of reiserfs after Reiser/Namesys pretty |
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much abandoned it, as well, and was the one behind adding data=ordered to |
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it according to what I read of the changelogs, so I'm already depending |
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on his work with reiserfs for my entire system. |
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> It looks |
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> like it aims to be everything that zfs is (minus the GPL-incompatible |
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> license). |
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As zfs hasn't been GPL compatible, I've not followed it as closely as I |
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might have, but I'm certainly looking forward to btrfs sometime later, |
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late this year or sometime next, my plan if things go well. |
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> Definitely not ready for prime time, but the proposed feature |
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> set looks better than zfs. I don't like the inability to reshape zfs - |
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> you can add more arrays to your system, but you can't add one drive to |
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> an existing array (online or offline). Btrfs seems to aim to be able to |
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> do this. Again, it is completely experimental at this point - don't use |
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> it except to try it out. It will be possible to migrate ext3/4 directly |
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> in-place to btrfs, and even reverse the migration (minus any changes - |
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> it essentially snapshots the existing data). The only limitation is |
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> that if you delete files you won't get the space back until you get rid |
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> of the ability to migrate back to ext3 (since it is a snapshot). |
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I didn't know in-place migrating ext3/4 to btrfs was going to be possible. |
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The big reason I've not used ext* is because I just can't see wasting all |
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those partial blocks, tho the extents of ext4 have been tempting even |
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without reiserfs tail packing. That tail packing is something else I'm |
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not sure btrfs does, but even without that, given the integrated RAID- |
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like features, I'll probably upgrade when it comes time. Shortening the |
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recovery time as it doesn't have to rebuild the "empty data" portions of |
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the volume will be nice. |
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-- |
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Duncan - List replies preferred. No HTML msgs. |
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"Every nonfree program has a lord, a master -- |
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and if you use the program, he is your master." Richard Stallman |
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