Hello everyone!
I am working on resizing qcow2 images using virt-resize+liguestfs. E.g.
I when shrinking a partition, I have to resize filesystem using
resize2fs-size. The problem is that I cannot find out minimal partition
size (aka resize2fs -P). The only way is calling "resize2fs-size 1K",
wait for resize2fs to claim "resize2fs: New size smaller than minimum
(510050)" and parse this output.
It is known that resize2fs carries out complex calculations (no always
correct) to get minimal size, so statvfs/tune2fs-l cannot help.
The questions are:
1) How to get minimal partition size (equal to resize2fs -P)?
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.
Thanks in advance!
--
Your sincerely,
Maxim Perevedentsev
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