[CentOS] ZFS on Linux in production?

[Rainer Duffner]

Am 25.10.2013 um 00:47 schrieb John R Pierce <pierce at hogranch.com>:

> On 10/24/2013 2:59 PM, Lists wrote:
>>>> (*) ran into a guy who had 100s of zfs 'file systems' (mount points),
>>>> per user home directories, and was doing nightly snapshots going back
>>>> several years, and his zfs commands were taking a long long time to do
>>>> anything, and he couldn't figure out why.  I think he had over 10,000
>>>> filesystems * snapshots.
>> Wow. Couldn't he have the same results by putting all the home
>> directories on a single ZFS partition?
> 
> I believe he wanted quotas per user.   ZFS quotas were only implemented 
> at the file system level, at least as of whatever version he was running 
> (I don't know if thats changed, as I never mess with quotas).
> 
> 


User and group quotas have been possible for some time.

ZFS is cool. But there are a lot of issues and stuff that needs to be tuned but is difficult to find out if it needs to be tuned.


Especially, if you run into performance-problems.

Once you have some experience with it, I recommend reading this blog:
http://nex7.blogspot.ch

and of course, the FreeNAS forum, where you can read about stuff like that:

https://bugs.freenas.org/issues/1531

On the surface, ZFS is great. But god help you if you run into problems.