Messages in this thread | | | Date | Tue, 29 Nov 2005 10:03:02 -0600 | From | Chris Adams <> | Subject | Re: what is our answer to ZFS? |
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Once upon a time, Theodore Ts'o <tytso@mit.edu> said: >This isn't actually a new idea, BTW. Digital's advfs had storage >pools and the ability to have a single advfs filesystem spam multiple >filesystems, and to have multiple adv filesystems using storage pool, >something like ten years ago.
A really nice feature of AdvFS is fileset-level snapshots. For my Alpha servers, I don't have to allocate disk space to snapshot storage; the fileset uses free space within the fileset for changes while a snapshot is active. For my Linux servers using LVM, I have to leave a chunk of space free in the volume group, make sure it is big enough, make sure only one snapshot exists at a time (or make sure there's enough free space for multiple snapshots), etc.
AdvFS is also fully integrated with TruCluster; when I started clustering, I didn't have to change anything for most of my storage.
I will miss AdvFS when we turn off our Alphas for the last time (which won't be far off I guess; final order date for an HP Alpha system is less than a year away now). -- Chris Adams <cmadams@hiwaay.net> Systems and Network Administrator - HiWAAY Internet Services I don't speak for anybody but myself - that's enough trouble. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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