new jail utility is available. announcement.
kraduk at googlemail.com
Wed Jul 21 12:10:33 UTC 2010
On 21 July 2010 12:37, Aiza <aiza21 at comclark.com> wrote:
> Valentin Bud wrote:
>> On Wed, Jul 21, 2010 at 12:52 PM, Aiza <aiza21 at comclark.com> wrote:
>> Not yet, when I have a spare box I might, although I quite like using
>>>> zfs for jails as you can limit the disk usage dynamically per zfs
>>>> filesystem and I didnt see any support there yet, even basic support
>>>> like there is with ezjail would be nice.
>>>> Zfs was left out because its over kill. Sparse image jails gives the
>>> protection at a 10th of the overhead.
>>> Hello community,
>> ZFS shouldn't be left out. Besides limiting the disk usage dynamically
>> zfs FS
>> you have another big advantage - snapshots. Suppose you want to upgrade
>> is a jail and something goes kaboom you just revert to the previous
>> I agree you can copy the image back and forth but zfs snapshots are
>> and not
>> that space consuming.
That all depends on your deltas. We do hot backups (lock, flush, snap,
unlock) of our oracle dbs on solaris with zfs snap shots. The do take up a
lot of room but thats becasue we do a lot of writes gigs a day.
>> The layout that I plan to use is the following:
>> | |
>> | |> ...
>> Group can be any kind of characteristic you want to take into account
>> those jails (eg. group1 - mail servers, group2 - web servers, groupX -
>> companyY, etc.).
>> You can also go with more levels of depth but for me it's enough.
>> This way if your server doesn't handle all the jails you have running,
>> buy new hardware, install FBSD (or just copy the ZFS root container over
>> the new
>> system) and migrate the jails over.
>> I am waiting for network stack virtualization to come out and dreaming
>> live jails
>> migration in the future of FBSD :).
>> I would like you to reconsider ZFS support and thanks for qjail :).
>> a great day,
> What you are doing behind the jail system back using zfs, qjail does with
> the -z zone option right up front. And the archive and restore of qjail
> jails is less than 3 seconds right now. How much faster does it need to be?
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that depends on how much data is in the jail surely.
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