Re: root low space

In my case, described above, in order to be able to use

# partclone.ext3 -c -d -s /dev/mapper/vg1-root -o /home/francesco/vg1-root.img

how to first umount vg1-root? I was unable to do that correctly, so that partclone failed because

device (/dev/map//vg1-root) is mounted at /

thanks

francesco
(and sorry for such a low-level query)

On Thu, May 22, 2014 at 7:30 PM, Giacomo Mulas <gmulas@oa-cagliari.inaf.it> wrote:

On Thu, 22 May 2014, Francesco Pietra wrote:

no mention about ext3, which is the filesystem I use (ext2 only for boot).

you should use the lines below, where it says "if you prefer to do this
manually...", it applies also to ext3. Do have a look at the manpages for
resize2fs and lvreduce, to find out the appropriate command line options for
your case.

Very generally, when you want to reduce a volume you first reduce the
filesystem, then reduce the volume; when you want to enlarge it, you first
enlarge the lvm volume, then you can expand the filesystem. The tools that
you use for shrinking/expanding the filesystem depend on the filesystem, and
are different for ext2/3/4, reiser, xfs... but you can usually look them up
easily on google. In your case, since you need to boot off a live distro,
make sure the live distro has all the tools you need installed and working,
which for you are resize2fs, lvreduce and lvextend.

Ciao
Giacomo

--
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Giacomo Mulas <gmulas@oa-cagliari.inaf.it>
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INAF - Osservatorio Astronomico di Cagliari
via della scienza 5 - 09047 Selargius (CA)

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