Re: [Libguestfs] xfs protofiles for libguestfs
On Sat, Apr 02, 2022 at 08:18:52AM -0700, Alli wrote:
Hi all,
I hope I am in the right place, I found this email by following the
link in the project README. We are collecting use cases for xfs dev
projects, one of which would be enhancing xfs protofiles, which is a
type of script that facilitates filesystem generation. I am not
very familiar with libguestfs, but a coworker suggested that this
might be of interest to your project. More specifically, the task
would be to add attributes to the files generated by the protofile
script. Does this sound like something that might be of use to
libguestfs? I did take a quick glance through the libguestfs code,
and didnt notice any current usage of xfs protofiles, but I thought
it was worth asking if protofiles might become of interest if we did
add this feature. Thanks!
Hello Allison,
I have to admit I'm not sure what any of this means. Also the
information about protofiles is a bit thin. There is some information
in the mkfs.xfs(8) man page, but even that is a bit unclear.
Is it like the (very useful) "-d" option of mke2fs?
Libguestfs does not currently provide a binding around mkfs.xfs.
Instead we rely on generic mkfs support and that only encodes a few
baseline mkfs features like blocksize:
https://github.com/libguestfs/libguestfs/blob/3115726aca7d898be3b1191d322...
https://github.com/libguestfs/libguestfs/blob/3115726aca7d898be3b1191d322...
This is unusual. We do support other mkfs-like tools more directly, eg mke2fs:
https://github.com/libguestfs/libguestfs/blob/3115726aca7d898be3b1191d322...
https://github.com/libguestfs/libguestfs/blob/3115726aca7d898be3b1191d322...
And we also currently have support for other xfs_* tools like
xfs_info, xfs_growfs. Just not (yet) any support for mkfs.xfs.
I've copied Eric Sandeen in on this email as he usually knows a lot
more than I do.
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
nbdkit - Flexible, fast NBD server with plugins
https://gitlab.com/nbdkit/nbdkit