[EMAIL PROTECTED] wrote on 01/28/2008 09:11:53 AM:
> I too am having the same issues. I started out using Solaris 10
> 8/07 release. I could create all the filesystems, 47,000
> filesystems, but if you needed to reboot, patch, shutdown.... Very
> bad. So then I read about sharemgr and how it was supposed to
> mitigate these issues. Well, after running a process that creates
> zfs filesystems for all our users and then they get shared through
> inherited zfs/nfs permissions I have only 6400 filesystems created
> after 3 days of the process running. Not very good. I am going to
> try and recreate the filesystems with sharenfs being done on each
> filesystem rather than from the top of the tree to see if I can
> improve the speed. In case you are wondering the system I have
> configured is the following.
>
> Sun v245 with 16 gigs of RAM and 2 procs
> 3 Apple X-Raids in a RAID-Z config -- each X-Raid is really like 2
> direct attached... so there are 6 independent connections to the
> server. More like a RAID-Z set with 6 disks attached.
>
> You may ask why I would have that many filesystems. Well, as one of
> the posters above pointed out, we had this same setup on an aging
> sun 450 server. We had the 47k user home directories stored on it
> with quotas enabled. Well, we needed to migrate this to a new
> system and ZFS seemed like it was the answer to all our problems.
> We have 16TB raw disk and needed a filesystem that could see this,
> was robust, and very safe/secure. Enter zfs...maybe. Well, I can
> see all the disk, I can create all the directories, I have done some
> load testing....Impressive. I just can't share them.
>
Chris,
I am of firm belief that shoehorning zfs reservations/quotas to act
as user/group quotas by creating filesystems is a very poor decision. I
would a: wait until the ZFS team realize that they need to actually support
real user/group quotas and implement them, or b: skip ZFS for this install
-- the advantages of ZFS do not make up for the pain of losing real
user/group quotas (or using fs reservations in lieu of real quotas).
-Wade
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