On 09/23/2009 03:40 PM, Alasdair G Kergon wrote:
On Wed, Sep 23, 2009 at 03:04:22PM -0600, Eric Brunson wrote:I remember seeing somewhere discussion of adding the ability to roll back to a snapshot. I think of how cool this would be about ever six months, usually coinciding with an impending Fedora release. ;-)The developers are just starting to submit their patch sequence to the development mailing lists (dm-devel and lvm-devel) for review. So that's targetting linux-next in the next few weeks ready for the 2.6.33 kernel.
>From the newly released 2.6.33 kernel changelog, does this mean what I think it means?
commit 53365383c4667aba55385cd1858582c19a7a8a36 Merge: 51b736b d2fdb77 Author: Linus Torvalds <torvalds linux-foundation org> Date: Tue Dec 15 09:12:01 2009 -0800 Merge git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm * git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm: (80 commits) dm snapshot: use merge origin if snapshot invalid dm snapshot: report merge failure in status dm snapshot: merge consecutive chunks together dm snapshot: trigger exceptions in remaining snapshots during merge dm snapshot: delay merging a chunk until writes to it complete dm snapshot: queue writes to chunks being merged dm snapshot: add merging dm snapshot: permit only one merge at once dm snapshot: support barriers in snapshot merge target dm snapshot: avoid allocating exceptions in merge dm snapshot: rework writing to origin dm snapshot: add merge target dm exception store: add merge specific methods dm snapshot: create function for chunk_is_tracked wait dm snapshot: make bio optional in __origin_write ...
If it does, then I'm very excited. :-)