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authorIlya Dryomov <idryomov@gmail.com>2019-03-20 09:46:58 +0100
committerIlya Dryomov <idryomov@gmail.com>2019-03-20 16:27:40 +0100
commitbb229bbb3bf63d23128e851a1f3b85c083178fa1 (patch)
tree5b6b57fc2acdb4c09fd034e23c4930eb2ec2043a /drivers/block
parentrbd: set io_min, io_opt and discard_granularity to alloc_size (diff)
downloadlinux-bb229bbb3bf63d23128e851a1f3b85c083178fa1.tar.xz
linux-bb229bbb3bf63d23128e851a1f3b85c083178fa1.zip
libceph: wait for latest osdmap in ceph_monc_blacklist_add()
Because map updates are distributed lazily, an OSD may not know about the new blacklist for quite some time after "osd blacklist add" command is completed. This makes it possible for a blacklisted but still alive client to overwrite a post-blacklist update, resulting in data corruption. Waiting for latest osdmap in ceph_monc_blacklist_add() and thus using the post-blacklist epoch for all post-blacklist requests ensures that all such requests "wait" for the blacklist to come into force on their respective OSDs. Cc: stable@vger.kernel.org Fixes: 6305a3b41515 ("libceph: support for blacklisting clients") Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Reviewed-by: Jason Dillaman <dillaman@redhat.com>
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