df output into jail

Andrey Groshev greenx at yartv.ru
Mon Sep 21 05:17:56 UTC 2009


Miroslav Lachman ?????:
> Andrey Groshev wrote:
>> Hi, All!
>>
>> I create garbage files.
>> Mounted in the main system partition for data.
>>
>> #mount|grep /usr/jails/samba/
>> /dev/amrd0s4d.journal on /usr/jails/samba/data (ufs, asynchronous, 
>> local, noatime, nosuid, gjournal)
>> /usr/jails/basejail on /usr/jails/samba/basejail (nullfs, local, 
>> read-only)
>> devfs on /usr/jails/samba/dev (devfs, local)
>> fdescfs on /usr/jails/samba/dev/fd (fdescfs)
>> procfs on /usr/jails/samba/proc (procfs, local)
>>
>>
>> And now...
>> I see the output in the Jail "df-h" - it returns only the root mount.
>>
>> # df -h
>> Filesystem Size Used Avail Capacity Mounted on
>> /dev/amrd0s4a 18G 3.6G 13G 21% /
>>
>> If you ask specifically "df-h / data", then displays the desired data.
>>
>> # df -h /data
>> Filesystem Size Used Avail Capacity Mounted on
>> /dev/amrd0s4d.journal 178G 768M 163G 0% [restricted]
>>
>> Looking sources, decided that this is due to answer "mount".
>> IMHO, should be able to see the file systems mounted below the 
>> directory of jail.
>
> I think you are looking for security.jail.enforce_statfs=1
> Default is security.jail.enforce_statfs=2!
>
> See man jail(8) for more details.
>
> Miroslav Lachman
Yes, this is it! I'm sorry that I did not read the full manual.



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