[OpenIndiana-discuss] Disk Space Disappearing.

[Timothy Coalson]

On Wed, Jul 30, 2014 at 10:47 PM, Dormition Skete (Hotmail) <
dormitionskete at hotmail.com> wrote:

>
> On Jul 30, 2014, at 8:20 PM, Timothy Coalson <tsc5yc at mst.edu> wrote:
>
> >> And does anything else stand out to any of you?
> >>
> >> I see these:
> >
> > NAME                                     AVAIL   USED  USEDSNAP  USEDDS
> > USEDREFRESERV  USEDCHILD
> > ...
> > rpool/zones/archive/ROOT/zbe-2           37.1G  52.4G     24.3G   28.1G
> >         0          0
> > ...
> > rpool/zones/routerb2/ROOT/zbe-2          37.1G  16.3G     7.16G   9.16G
> >         0          0
> >
>
> These are our two email zones.  Our Dovecot server is in routerb2 because
> I couldn’t get mail to work unless it had a direct public IP address.  So
> the zone’s name does not really reflect that.  All of our other zones go
> through that routerb2 zone to get their internet access.  The “archive”
> zone is our email archives for the past 17 years.
>
> We have a LOT of email.  Especially when you consider there’s only four of
> us here.


They stand out because USEDSNAP is almost as much as USEDDS, suggesting a
fair amount of dead weight to free up.


>
> >>
> >>
> >>> I see "10M", not "10G", so I'm going to say no, it won't free that much
> >>> space.
> >>
> >>
> >
> > I hadn't looked at that, but I think most of it is unrelated to the boot
> > environment (only the first line is obviously a snapshot on the boot
> > environment).  A shot in the dark here- is "2014-07-05-23:13:59" the
> format
> > of the snapshot names your backup script uses?  If so, and that date/time
> > matches up with a backup you did, you probably made those snapshots
> > yourself.
> >
>
> I read someplace — I think on Oracle’s website — that when you create a
> boot environment, it creates a snapshot of the various zones, labeling them
> zbe-1, zbe-2, etc. for each new BE.
>

Interesting.  The names zbe-1, zbe-2 are filesystems - but they are
probably clones, and after a little reading on zfs clone, clones must be
made from snapshots, and make that snapshot impossible to destroy as long
as a clone exists.  You may have been on the right track all along, and I
was leading you astray - but I can't say for sure, someone else that has
experience with zones should chime in.


> I have deleted BE’s in the past, though not on a production server,
> without any problems.
>
> Having had four out of five servers, and a telephone system, all have
> hardware failures of one sort or another this past month, and every time I
> turned around, I was just breaking things worse... let’s just say I’m a
> little worn out by all of this.  (Actually, all five servers have given me
> grief.)  All I’ve done this month is wrestle with these machines...
>
> So again, thank you very, very much for all of your help.  I really
> appreciate it a lot.
>
>
>
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