From: "Richard W.M. Jones" <rjones@redhat.com>
To: springfield@sourceware.org
Cc: Steven Whitehouse <swhiteho@redhat.com>
Subject: Could libguestfs use springfield?
Date: Mon, 01 Jan 2018 00:00:00 -0000 [thread overview]
Message-ID: <20180614111545.GB14740@redhat.com> (raw)
libguestfs provides a C library and large set of tools for
manipulating disk images. http://libguestfs.org/
As part of this we provide APIs to open VM disks and do things like
enumerate partitions or resize logical volumes. The actual way this
works currently is we run the external commands (eg. parted, lvresize)
inside a small virtual machine and pass the right command line options
or parse the output. In some cases we're also parsing stuff out of
kernel /sys/block.
We've accumulated a large amount of code to do this (I counted 60619
lines of code in the current version). Here are a few examples so you
can see in concrete terms what I'm talking about:
https://github.com/libguestfs/libguestfs/blob/afd1c70601c51043684a0245ce2f63d71a9cc07a/daemon/parted.c#L344
https://github.com/libguestfs/libguestfs/blob/afd1c70601c51043684a0245ce2f63d71a9cc07a/daemon/lvm.c#L271
Steven W pointed me to "Project Springfield" and it sort of looks like
it's in the same area. Could libguestfs replace the parsing code
above with this?
What might be problems: We have no python or dbus in the appliance.
So anything that depends on those is a non-starter.
TBH the project webpage left me more confused than enlightened. There
seem to be lots of projects (subprojects?) doing stuff with odd names
and no unifying philosophy, and I'm not sure if Project Springfield is
a thing or more of an intention.
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
virt-p2v converts physical machines to virtual machines. Boot with a
live CD or over the network (PXE) and turn machines into KVM guests.
http://libguestfs.org/virt-v2v
next reply other threads:[~2018-06-14 11:16 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-01 0:00 Richard W.M. Jones [this message]
2018-01-01 0:00 ` Vojtěch Trefný
2018-01-01 0:00 ` Richard W.M. Jones
2018-01-01 0:00 ` Steven Whitehouse
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