Peformance - tuning quicky

[fred974]

Hello all,

I have a quick question. I have a server with three jails and tuned the host's /etc/rc.conf and /boot/loader.conf to boost my ZFS performance. Do I have to copy all the settings over to each jail or do the jails inherit the settings from the host?

Thank you,

Fred

 

[SirDice]

You cannot change kernel parameters or load kernel modules from within a jail. Jails use the host's kernel.

 

[fred974]

Hi @SirDice,

So the jails will inherit the settings from the host then. Is that right? Do I still need

zfs_enable="YES"

in my jail rc.conf file?

 

[SirDice]

So the jails will inherit the settings from the host then. Is that right?

Yes, remember that even with multiple jails there's always only one kernel running, the host's.

Do I still need

zfs_enable="YES"

in my jail rc.conf file?

No. That would try to load the ZFS kernel module, which isn't allowed.

 

[fred974]

Cool, I get it

Thank you.