On Wed, Aug 06, 2014 at 04:17:24PM +0800, Li Tianqing wrote:
how to use python-guestfs to access rbd device? The function i found
is g.add_drive_opts, but i dono know how it receive ceph's configuration.
Ignore this link, it's very old and describes a hack which is no
longer needed. Libguestfs now properly supports accessing many remote
drives, without needing hacks.
Is that the only way i should use to access ceph rbd? Can we use
python-guestfs to get the same effect?
Yes, you can use python-guestfs to access rbd.
You need to do something like the code below.
My Ceph server is switched off at the moment and I'm about to go to a
conference, so I didn't have time to test this, but something like
this should work.
Make sure you have a recent version of libguestfs. At least >= 1.26.
----------------------------------------------------------------------
import guestfs
g = guestfs.GuestFS (python_return_dict=True)
g.set_verbose (1)
g.set_trace (1)
g.add_drive_opts ("pool/image",
format="raw",
readonly=1,
protocol="rbd",
server=[ "192.168.0.10:1234", "192.168.0.11:1235" ],
# username="rbd_user_name",
# secret="base64_encoded_password",
)
g.launch ()
# etc.
----------------------------------------------------------------------
Rich.
--
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