On 14.12.2017 11:27, Ravikumar Wagh wrote:
I was trying to get details of mout points but found that df and
ansible
setup module not returns same size or block count.
This is case even I specify bloc size for df command
checkout below :
ravikumar:~ # df -Th --block-size=4096
Filesystem Type 4K-blocks Used Available Use%
Mounted on
/dev/sda3 ext3 23445742 3929894 18323208 18%
/
Ansible result :
"block_available": 18323119,
"block_size": 4096,
"block_total": 23445742,
Can some one comment on this why they are different.
The block_total is equal and block_available just have a difference of
89 blocks.
I doubt that the ansible fact command checking the disk have been run at
the same millisecond/nanosecond as the df command.
In a live file system a lot of IO is ongoing, like temp files been
created av deleted, so it normal that available space change all the
time.
Ansible is just running Python os.statvfs so with this command you might
be lucky to see that they are the same.
df -Th --block-size=4096 /; python -c "import os;print os.statvfs('/')"
But this oneliner with two commands is run one after the other, so it
too might be different.
--
Kai Stian Olstad
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