On Sun, Jul 06, 2014 at 11:07:42PM +0530, Raghu wrote:
Thanks Rich for your response.
See also:
https://www.redhat.com/archives/libvir-list/2014-July/msg00281.html
Perhaps, this option could be passed via an environment variable
and
guestfish could pass it down to qemu.
If you're using the 'direct' backend then environment variables get
passed along to qemu unmodified, so you could use a qemu wrapper
script which parses the environment variable and adds the appropriate
'-iscsi ...' flag.
http://libguestfs.org/guestfs.3.html#backend
http://libguestfs.org/guestfs.3.html#qemu-wrappers
The 'direct' backend is the default upstream, and in every distro
except Fedora/RHEL. Fedora >= 18 & RHEL >= 7 now default to the
'libvirt' backend, but you can switch them to use the direct backend
by setting a single environment variable.
http://libguestfs.org/guestfs.3.html#environment-variables
While it's possible to use hacks like this, it's better to fix the API
properly in the long term, so please do still file an RFE bug.
I will file a bug requesting this feature. This is an absolutely
necessary feature we would to like to have in order to make use of
libguestfs in our work. Generally, what is the turnaround time for
such feature requests to appear in a release?
Please file the bug - I'll have a look at it when I can, but it
wouldn't be available as a new feature in a stable release before
version 1.28 (which is due in about 2-3 months from now).
http://libguestfs.org/guestfs.3.html#libguestfs-version-numbers
Meanwhile, I am thinking of the following as a workaround
1. Make use of iscsi-initiator utils ( which gets installed as part of
libguestfs dependency ) to establish iscsi connection
2. This will create a device such as /dev/sdb
3. Mount the partition and execute our guestfs script as follows
guestfish -m /dev/sdb1:/ -f myscript.txt
Will this work without -a parameter ?
Any other alternative?
qemu wrapper is going to be much simpler -- see above.
Rich.
--
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