6:43 a.m.
Dear all,
I created some snapshots, a long time ago, using the xml description
option, so the snapshots have a name with a space in it...
Really a bad choice apparently, since it seems impossible to delete them
now: I cannot find how to enter the snapshot name properly due to the
space. Quotes don't seem to help; escaping the space doesn't help either.
Anybody knows how to solve this?
eg:
snapshot-delete DOMINO1-prealloc --snapshotname 'W2K3-virgin install'
error: Domain snapshot not found: no snapshot with matching name
''W2K3-virgin'
(-> notive also the extra ' added )
root@VLET3:~# time virsh snapshot-delete DOMINO1-prealloc "W2K3-virgin\
install"
error: unexpected data 'install'
Thanks, Juergen
12:06 a.m.
On 01/21/2013 03:43 PM, jurgen.depicker(a)let.be wrote:
Dear all,
I created some snapshots, a long time ago, using the xml description
option, so the snapshots have a name with a space in it...
Really a bad choice apparently, since it seems impossible to delete them
now: I cannot find how to enter the snapshot name properly due to the
space. Quotes don't seem to help; escaping the space doesn't help either.
Anybody knows how to solve this?
eg:
snapshot-delete DOMINO1-prealloc --snapshotname 'W2K3-virgin install'
What version of libvirt are you using? And is this within the virsh
batch mode, or from the command line?
error: Domain snapshot not found: no snapshot with matching name
''W2K3-virgin'
(-> notive also the extra ' added )
That's not supposed to happen; quoting of spaces is supposed to mimic
shell quoting, so that you can use arguments with spaces in both command
line and batch mode. To test:
# virsh echo two spaces
two spaces
# virsh echo 'two spaces'
two spaces
# virsh
Welcome to virsh, the virtualization interactive terminal.
Type: 'help' for help with commands
'quit' to quit
virsh # echo two spaces
two spaces
virsh # echo 'two spaces'
two spaces
virsh # quit
root@VLET3:~# time virsh snapshot-delete DOMINO1-prealloc "W2K3-virgin\
install"
error: unexpected data 'install'
I'm not reproducing this; I tested with libvirt 0.10.2.2 (Fedora 18):
# virsh snapshot-list fedora-local
Name Creation Time State
------------------------------------------------------------
name with spaces 2013-01-22 09:05:07 -0700 shutoff
# virsh snapshot-delete fedora-local 'name with spaces'
Domain snapshot name with spaces deleted
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
12:27 a.m.
On 01/21/2013 03:43 PM, jurgen.depicker(a)let.be wrote:
> Dear all,
> I created some snapshots, a long time ago, using the xml description
> option, so the snapshots have a name with a space in it...
> Really a bad choice apparently, since it seems impossible to delete
them
> now: I cannot find how to enter the snapshot name properly due
to the
> space. Quotes don't seem to help; escaping the space doesn't help
either.
> Anybody knows how to solve this?
> eg:
> snapshot-delete DOMINO1-prealloc --snapshotname 'W2K3-virgin install'
What version of libvirt are you using? And is this within the virsh
batch mode, or from the command line?
root@VLET3:~# virsh --version
0.8.3
(ubuntu 10.10 : I cannot upgrade it right now; I need to wait at least a
month but need to remove the snapshots since I run out of disk space...)
The error happens both on command-line and batch mode.
> error: Domain snapshot not found: no snapshot with matching name
> ''W2K3-virgin'
> (-> notive also the extra ' added )
That's not supposed to happen; quoting of spaces is supposed to mimic
shell quoting, so that you can use arguments with spaces in both command
line and batch mode. To test:
# virsh echo two spaces
two spaces
# virsh echo 'two spaces'
two spaces
root@VLET3:~# virsh echo two spaces
error: unknown command: 'echo'
So, or I pray that my 20G remaining will suffice for one more month, or
maybe someone knows how to rename a snapshot, or edit some config file
where that name is configured?
I am very very sorry to see that this bug was solved in later versions...
but I really cannot upgrade that server now...
Grts, J
5:36 a.m.
On 01/22/2013 09:27 AM, jurgen.depicker(a)let.be wrote:
> What version of libvirt are you using? And is this within the
virsh
> batch mode, or from the command line?
root@VLET3:~# virsh --version
0.8.3
That explains it. Older virsh had lousy command line handling.
root@VLET3:~# virsh echo two spaces
error: unknown command: 'echo'
Yep, I added the 'virsh echo' command when I fixed command line parsing.
Meanwhile, you don't have to use virsh. You could write your own C
program that directly calls virDomainSnapshotDelete() from libvirt.so,
or you could use python bindings. I'm not a python whiz, but I think it
would probably be something like:
$ python
>> import libvirt
>> conn = libvirt.open(None)
>> dom = conn.lookupByName("DOMINO1-prealloc")
>> snap = dom.snapshotLookupByName("W2K3-virgin install", 0)
>> snap.delete(0)
>> quit()
So, or I pray that my 20G remaining will suffice for one more month, or
maybe someone knows how to rename a snapshot, or edit some config file
where that name is configured?
Just because virsh command-line parsing is lousy doesn't mean that the
underlying APIs won't work - you just have to get at them from somewhere
other than virsh.
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
8:42 p.m.
Meanwhile, you don't have to use virsh. You could write your own
C
program that directly calls virDomainSnapshotDelete() from libvirt.so,
or you could use python bindings. I'm not a python whiz, but I think it
would probably be something like:
$ python
>>> import libvirt
>>> conn = libvirt.open(None)
>>> dom = conn.lookupByName("DOMINO1-prealloc")
>>> snap = dom.snapshotLookupByName("W2K3-virgin install", 0)
>>> snap.delete(0)
>>> quit()
Worked like a charm! Thanks a lot for the help!!
Grts, J
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