[linux-lvm] snapshot pools, lvm roadmap

Stuart D. Gathman stuart at bmsi.com
Wed Jan 5 18:45:49 UTC 2011

On Tue, 4 Jan 2011, Brian Neu wrote:

>   For many years, I've greatly desired a snapshotting solution which goes
>   above and beyond the current lvm features.  I'd love to see the ability to
>   instantiate a storage pool for creating snapshots, with either a
>   first-in-first-out or even some other method for bumping snapshots when the
>   pool fills up.  The inefficiency of the former style of lvm snapshots in
>   both space and speed and the cumbersome nature of managing them has kept me
>   looking for alternatives.  Btrfs isn't quite there yet and may not be
>   through 2011 or beyond.  zfs-fuse can't seem to act as a volume manager and
>   I'm having problems with crashes.  Frustrated, I'm turning back to lvm.
>    So now I'm looking at the lvm wiki and I'm seeing "shared exception
>    store".  Can someone fill me in on the current status of this effort as
>    the wiki was last updated in May-2009 ?

These guys have snapshot pools working as an addon product.  It mostly
works using straight device mapper - but they have a kernel patch that is
needed for some deadlock issues.


	      Stuart D. Gathman <stuart at bmsi.com>
    Business Management Systems Inc.  Phone: 703 591-0911 Fax: 703 591-6154
"Confutatis maledictis, flammis acribus addictis" - background song for
a Microsoft sponsored "Where do you want to go from here?" commercial.

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