On 09/15/2015 05:37 PM, Richard W.M. Jones wrote:
On Tue, Sep 15, 2015 at 05:17:16PM +0300, Maxim Perevedentsev wrote:
On 09/15/2015 04:57 PM, Richard W.M. Jones wrote:
2) More general, how to execute commands from appliance but make
them run over image (which may not have anything but filesystem) - I
saw something like that in source.
Not sure I understand the question?
As I understand, guestfs runs its own kernel-like daemon that can
run its own commands. It is used to run e.g. resize2fs or e2fsck
over loaded disk images. But those two utilities require the
partition not to be mounted, so they are run by daemon and do not
require anything to exists on partition.
In API I found only the 'command' command which requires the
partition to be mounted and have kernel image on it. This cannot
operate on empty or non-mounted partition.
You probably want to use the guestfs_debug API, ie:
char *cmd[] = { "resize2fs", "-P", ..., NULL };
char *ret = guestfs_debug (g, "sh", cmd);
Yeah! This is just what I was looking for. Thank you :-)
It's better to add a new API however, and not difficult either:
http://libguestfs.org/guestfs.3.html#adding-a-new-api-action
Rich.
I'll try to submit a patch when I'll have time.
--
Your sincerely,
Maxim Perevedentsev
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