-------- Forwarded Message -------- Subject: Re: [Libguestfs] Question: running appliance commands over guest fs (resize2fs -P). Date: Tue, 15 Sep 2015 17:17:16 +0300 From: Maxim Perevedentsev <mperevedentsev@virtuozzo.com> To: Richard W.M. Jones <rjones@redhat.com> On 09/15/2015 04:57 PM, Richard W.M. Jones wrote:

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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?

Rich. 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. So I wonder if there is a legal way to run arbitrary commands from daemon but make them operate on non-mounted, possibly empty images/partitions. (Maybe I am missing something, I just run guestfish in verbose mode and executed e2fsck and resize2fs). -- Your sincerely, Maxim Perevedentsev