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>
parent
048a9d2d
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