rbd: fix buffer size for writes to images with snapshots

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rbd_osd_req_create() needs to know the snapshot context size to create
a buffer large enough to send it with the message front. It gets this
from the img_request, which was not set for the obj_request yet. This
resulted in trying to write past the end of the front payload, hitting
this BUG:

libceph: BUG_ON(p > msg->front.iov_base + msg->front.iov_len);

Fix this by associating the obj_request with its img_request
immediately after it's created, before the osd request is created.

Fixes: http://tracker.ceph.com/issues/5760
Suggested-by: Alex Elder <alex.elder@linaro.org>
Signed-off-by: Josh Durgin <josh.durgin@inktank.com>
Reviewed-by: Alex Elder <alex.elder@linaro.org>

...

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Josh Durgin 2013-08-27 14:45:46 -07:00 • committed by Sage Weil

parent 9542cf0bf9

commit 03507db631

1 changed files with 5 additions and 5 deletions

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drivers/block/rbd.c

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