Delaying mount of UFS filesystem in ZFS pool

[Aaron Holmes]

I didn't think of mountlate, that may work. What I ended up doing was 
adding the "noauto" option and running a cronjob that checks and mounts 
the filesystem.
Unfortunately, I learned that quotas only apply to mount points and not 
directories, so I may not be of any use for testing new things in the 
near future.

Pawel Jakub Dawidek wrote:
> On Fri, May 23, 2008 at 02:04:56PM -0700, Aaron Holmes wrote:
>   
>> I have a UFS filesystem inside a zpool:
>> tank on /tank (zfs, local)
>> /dev/zvol/tank/ufs on /mnt/ufs (ufs, local, acls)
>>
>> If I add that entry (/dev/zvol/tank/ufs) to /etc/fstab, it will try to 
>> mount as a critical filesystem on boot, however, because ZFS hasn't yet 
>> loaded, this fails and causes all sorts of fun for me.
>> Currently I have that filesystem mounting via a cronjob that checks 
>> every minute if it's mounted.. definitely not ideal.
>>
>> I need this filesystem in /etc/fstab so I can setup quotas on it (if 
>> there is some other way to get quotas working, great, point me to a link 
>> or two).
>>
>> So what I'm thinking for a solution is to delay the mount of this 
>> filesystem until ZFS has loaded, but I'm not sure of a way to do this 
>> with the filesystem in /etc/fstab, and without extensive hacking to one 
>> or more rc scripts.
>>
>> Ideas?
>>     
>
> Adding 'late' flag in "Options" section to the fstab entry may help,
> although I don't think it will help with quotas:
>
> 	# rcorder /etc/rc.d/*
> 	[...]
> 	/etc/rc.d/mountcritlocal
> 	[...]
> 	/etc/rc.d/zfs
> 	[...]
> 	/etc/rc.d/mountcritremote
> 	[...]
> 	/etc/rc.d/quota
> 	[...]
> 	/etc/rc.d/mountlate
> 	[...]
>
> We might consider running rc.d/quota after rc.d/mountlate, not sure if
> it won't break something else. I added freebsd-rc@ to CC.
>
>