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(parent: 048a9d2) | patch
rbd: return errors for mapped but deleted snapshot
authorJosh Durgin <josh.durgin@inktank.com>
Tue, 22 Nov 2011 02:14:25 +0000 (18:14 -0800)
committerSage Weil <sage@inktank.com>
Tue, 31 Jul 2012 01:15:36 +0000 (18:15 -0700)
commite88a36ec961b8c1899c59c5e4ae35a318c0209d3
tree1a893aa5764c6f1630b8236b04e7a6616de0e676tree | snapshot
parent048a9d2d069e3d63c9169de82649be00de65a8f6commit | diff
rbd: return errors for mapped but deleted snapshot

When a snapshot is deleted, the OSD will return ENOENT when reading
from it. This is normally interpreted as a hole by rbd, which will
return zeroes. To minimize the time in which this can happen, stop
requests early when we are notified that our snapshot no longer
exists.

[elder@inktank.com: updated __rbd_init_snaps_header() logic]

Signed-off-by: Josh Durgin <josh.durgin@inktank.com>
Reviewed-by: Alex Elder <elder@inktank.com>
drivers/block/rbd.c diff | blob | history
Domain: System / Kernel;