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authorMikulas Patocka <mpatocka@redhat.com>2009-12-10 23:52:31 +0000
committerAlasdair G Kergon <agk@redhat.com>2009-12-10 23:52:31 +0000
commit3452c2a1eb5b93c1b9fb0d22bd5b07c0cee4dc29 (patch)
tree65d4af8d6cf36ac4bcc8c226f8be891740d343ee /virt
parent515ad66cc4c82f210d726340349c8f7c1ec6b125 (diff)
dm snapshot: avoid allocating exceptions in merge
The snapshot-merge target should not allocate new exceptions because the intent is to merge all of its exceptions as quickly and safely as possible. This patch introduces the snapshot-merge mapping function and updates __origin_write() so that it doesn't allocate exceptions on any snapshots that are being merged. If a write request to a merging snapshot device is to be dispatched directly to the origin (because the chunk is not remapped or was already merged), snapshot_merge_map() must make exceptions in other snapshots so calls do_origin(). Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'virt')
0 files changed, 0 insertions, 0 deletions