ceph: make 'nocopyfrom' a default mount option
authorLuis Henriques <lhenriques@suse.com>
Mon, 10 Dec 2018 10:23:12 +0000 (10:23 +0000)
committerIlya Dryomov <idryomov@gmail.com>
Tue, 11 Dec 2018 17:22:17 +0000 (18:22 +0100)
commit6f9718fe41c3a47e4362bddf145e2db6ad7d8e87
tree46e8a2a21554cd2c26e8e098f5622f84d9d8f0ab
parent40e020c129cfc991e8ab4736d2665351ffd1468d
ceph: make 'nocopyfrom' a default mount option

Since we found a problem with the 'copy-from' operation after objects have
been truncated, offloading object copies to OSDs should be discouraged
until the issue is fixed.

Thus, this patch adds the 'nocopyfrom' mount option to the default mount
options which effectily means that remote copies won't be done in
copy_file_range unless they are explicitly enabled at mount time.

[ Adjust ceph_show_options() accordingly. ]

Link: https://tracker.ceph.com/issues/37378
Signed-off-by: Luis Henriques <lhenriques@suse.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
fs/ceph/super.c
fs/ceph/super.h