| Commit message (Collapse) | Author | Age | Files | Lines |
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I have diffed the output from the original virt-df with this
new version, and they agree very closely. Some differences:
- Old virt-df have a divide-by-zero error in cases where the
number of used inodes was 0. New virt-df fixes this.
- New virt-df uses gnulib human_readable library which displays
numbers to 3 significant figures for -h output (old version
used an ad hoc function).
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The format parameter is taken from libvirt if available, else
the user should supply the '--format' parameter (eg. for local
disk files).
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This fixes virt-df --csv when used with libvirt domains that contain
quotes, spaces, commas and other lesser-used characters.
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This commit greatly improves the performance of the 'virt-df'
command by batching as many disks as possible onto a single appliance.
In many situations this means the appliance is launched only once,
versus one launch per domain as before.
However doing it this way is a lot more complex:
(1) Because of limits in Linux and virtio-blk, we can only attach
26 disks maximum at a time to the appliance.
(2) We have to use LVM filters (lvm-set-filter) to confine LVM to
the disks of a single guest.
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Before this commit, if you used the -h and --csv options together
you would get these warnings from virt-df:
$ virt-df -h --csv Guest
Virtual Machine,Filesystem,Size,Used,Available,Use%
Argument "13.5G" isn't numeric in printf at /home/rjones/d/libguestfs/tools/virt-df line 298.
Argument "4.7G" isn't numeric in printf at /home/rjones/d/libguestfs/tools/virt-df line 298.
Argument "8.1G" isn't numeric in printf at /home/rjones/d/libguestfs/tools/virt-df line 298.
"/dev/vg_trick/RHEL55x64","/dev/VolGroup00/LogVol00",13,4,8,34.8%
Argument "98.7M" isn't numeric in printf at /home/rjones/d/libguestfs/tools/virt-df line 298.
Argument "18.8M" isn't numeric in printf at /home/rjones/d/libguestfs/tools/virt-df line 298.
Argument "74.9M" isn't numeric in printf at /home/rjones/d/libguestfs/tools/virt-df line 298.
"/dev/vg_trick/RHEL55x64","/dev/vda1",98,18,74,19.0%
We could fix this so that the human-readable numbers get written
into the CSV file. However would probably be wrong for most uses
of the CSV format (databases and spreadsheets) since they would not
be able to interpret these human-readable numbers, or worse could
misinterpret, eg. thinking that "1M" and "1G" are both 1.
Therefore this commit disallows this combination of options.
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Fix copyright years.
Fix URLs to point to new PRC site.
Make sure guestfish(1) and guestfs(3) manpages reference the
current list of tools.
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This commit fixes the 'Use%' field in the output so it matches what
coreutils' 'df' command would print.
Firstly we change the calculation to use the space available to root,
not the space available to non-root. This means it matches what 'df'
when run as root in the guest would show.
Secondly we display this rounded up to the next whole percent (ie. using
ceil), which is also what 'df' does.
Thirdly we change the regression test so it tests this.
Note that even with these changes you are not guaranteed to get precisely
the same figures from inside and outside the guest, as it depends on
how quiescent the guest is and how recently the superblock was synced.
Thanks: Rita Wu
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These were 'use'd but not actually used.
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This is the remainder of the fix for RHBZ#538041. Domains
which have ID 0 are special domains. libvirt defines it as
the "control plane OS". Only Xen and HyperV have this
behaviour, and in both cases we should ignore those domains
for the purposes of virt-df (user can just run "df" if they
need that information for the dom0).
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This is a partial fix for RHBZ#538041. When listing all domains,
don't die just because one domain fails, but keep trying for the
rest.
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This moves the tool programs into a single directory:
cat/* -> tools/virt-cat
df/* -> tools/virt-df
edit/* -> tools/virt-edit
rescue/* -> tools/virt-rescue
This in itself simplifies the build process because we only need
one Makefile and one copy of 'run-locally'.
'run-*-locally' has become just 'run-locally' and takes an extra
parameter which is the name of the tool, eg:
run-locally cat [virt-cat params...]
virt-inspector stays in its own directory, because this contains
more than just a single Perl script.
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