On Thu, Sep 15, 2016 at 12:04:06AM +0300, Андрей Василишин wrote:
Package: coreutils
Version: 8.23-4
Hello!
Usually df -h and du -hs shows the same used space. But now I have a
problem. I am using two SSD for a cache. Script all time writes and
deletes files.
df -H
/dev/sdc1 237G 178G 47G 80% /megastorage1
/dev/sdb1 237G 177G 48G 79% /megastorage2
du -hs /megastorage1
24G /megastorage1
du -hs /megastorage2
23G /megastorage2
mount | grep megastorage
/dev/sdc1 on /megastorage1 type ext4 (rw,noatime,data=ordered)
/dev/sdb1 on /megastorage2 type ext4 (rw,noatime,data=ordered)
The first thing that comes to mind is that something has a file open,
which was later deleted. Such a deleted file will not show up in du
because it can't be listed, but the blocks the file is using will still
be reported by df. If you have the lsof command installed (apt-get
install lsof) you can try something like
lsof | grep -i del | grep /megastorage
to identify deleted files and the process which has it open.
Mike Stone
