help with ZFS quotas, df, and jails

W

wonslung

Hello, i have an interesting issue....I'm not sure if there is a solution or not.

I have a system using ZFS and I'd like to find a way to make zfs mounted filesystems show up on df inside of a jail....is this possible at all?

For example, let's say i have a jail at /usr/jails/jail-a

and i create a zfs filesystem for a users home dir with a 100g

Code: 
zfs create tank/user1
zfs set quota=100g tank/user1

then i mount it on the jail like so:
Code: 
zfs set mountpoint=/usr/jails/jail-a/user/home/user1 tank/user1

is there any solution to making such a filesystem show up on df from inside the jail? The reason this is important is there are applications which need to find this data, and right now df just shows the jails /



EDIT:

just had a thought...is it possible to mount a ZFS filesystem as a legacy mount using the jails fstab?
 
In man zfs can be read:

zfs jail jailid filesystem

Attaches the given file system to the given jail. From now on this
file system tree can be managed from within a jail if the "jailed"
property has been set. To use this functionality, sysctl secu-
rity.jail.enforce_statfs should be set to 0 and sysctl secu-
rity.jail.mount_allowed should be set to 1.


zfs unjail jailid filesystem

Detaches the given file system from the given jail.

Maybe someone can give a usefull example on this?
 
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