On Wed, 10 Apr 2013 20:26:43 -0400
Theodore Ts'o <tytso@xxxxxxx> wrote:
> On Wed, Apr 10, 2013 at 07:56:06PM +0900, Tomasz Chmielewski wrote:
> > # lsof -n|grep /srv
> > #
> >
> >
> > So df says 134 GB is used, while du says 60 GB is used.
> > No removed but used files, according to lsof.
> >
> > How do I best debug what happened to ~70 GB?
>
> Well, nothing is using /srv, so why don't you unmount it and run
> "e2fsck -f /dev/xvdf", and see e2fsck reports in terms of the number
> of blocks in use, i.e:
>
> /dev/lambda/backup: 581320/4915200 files (0.1% non-contiguous),
> 6837767/19660800 blocks
If it was only so easy!
# lsof -n|grep /srv
# fuser /srv
# ls /sys/block/xvdf/holders/
# umount /srv
umount: /srv: device is busy.
(In some cases useful info about processes that use
the device is found by lsof(8) or fuser(1))
Yet after reboot, back to normal:
root@ec2:~# df -h /srv
Filesystem Size Used Avail Use% Mounted on
/dev/xvdf 194G 62G 123G 34% /srv
--
Tomasz Chmielewski
http://www.ptraveler.com
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