Amanda-Users

Re: globbing

2009-10-20 12:14:50
Subject: Re: globbing
From: Brian Cuttler <brian AT wadsworth DOT org>
To: Jean-Louis Martineau <martineau AT zmanda DOT com>
Date: Tue, 20 Oct 2009 11:58:41 -0400
Jean-Louis,

On Tue, Oct 20, 2009 at 11:50:34AM -0400, Jean-Louis Martineau wrote:
> It create one snapshot for each DLE.

Yes, however I'm afraid that if it creates a single disklist
for a glob, for instance /export/home/a*, creates snapshot /export/home
which I think would be acceptable.

But 'attempts' to create the same snapshot for glob /export/home/b*
and /export/home/c* those # zfs create snapshots will fail, which
may not actually be a problem.

However, when any of those globs completes and attempts to remove
the snapshot -- what will happen to the remaining dumps. They will
all lose their snapshots! (I think.)

I was hoping to have a snapshot for each of the directories within
the glob /export/home/a* which will work (on my system) since each
of the user directories is itself a mount point.

I recognize that there is no way to snapshot all of the As and then
all of the Bs.

I don't think there is a mechanism to maintain 'the' snapshot
until all of the globs complete. There is no cross-glob coordination.

> Can you post the disklist file so I can interpret the debug file correctly.

The disklist posted differs only in that for the -A glob we ran with
zfs-snapshot rather than user-tar.

                                                thank you,

                                                Brian

> Jean-Louis
> 
> Brian Cuttler wrote:
> >Jean-Louis,
> >
> >From directory (on the client) /tmp/amanda/client
> >
> >[finsen/tmp/amanda/client] pwd
> >/tmp/amanda/client
> >
> >[finsen/tmp/amanda/client] tar -cf /tmp/amzfs-snapshots.tar 
> >Amzfs_snapshot.20091019*
> >
> >
> >
> >
> >On Tue, Oct 20, 2009 at 11:21:55AM -0400, Jean-Louis Martineau wrote:
> >  
> >>Brian,
> >>
> >>What is the path of the snapshot, post the 
> >>Amzfs_snapshot.20091019*.debug files.
> >>
> >>Jean-Louis
> >>
> >>Brian Cuttler wrote:
> >>    
> >>>Jean-Louis,
> >>>
> >>>I reconfigured one of my globs to use dumptype zfs-snapshot
> >>>rather than user-tar. Backups ran well but I believe that we
> >>>did a single snapshot of /export/home rather than a snapshot
> >>>of /export/home/a* for each of the 'a' directories.
> >>>
> >>>I think this because when I look on the client system in the
> >>>/tmp/amanda/client directory, at the Amzfs_snapshot.20091019*.debug
> >>>files I see sepatate zfs snapshots for things like /export/samba/<shares>
> >>>but only the single snapshot for /export/home and not unique snapshots
> >>>for 
> >>>
> >>>[finsen/tmp/amanda/client] cd /export/home
> >>>[finsen/export/home] ls -ld a*
> >>>drwxr-xr-x   2 agaupel  users          4 Aug 25 09:46 agaupel
> >>>drwxr-xr-x   2 along    users          4 Sep 11 13:37 along
> >>>drwxr-xr-x   5 amanda   sys           12 Sep 24 13:46 amanda
> >>>drwxrwxr-x   2 daver    root           3 Aug 27 15:44 amandaScript
> >>>drwxr-xr-x   2 anarmand users          4 Sep 23 09:37 anarmand
> >>>drwxr-xr-x   2 aroselan users          4 Oct 15 10:46 aroselan
> >>>
> >>>While this may work fine for a limited number of a* directories
> >>>I'm afraid of what will happen if I again try to produce a
> >>>snapshot for the b* directories.
> >>>
> >>>It may be that the snapshot create fails after the first successfull
> >>>attempt, but what happens when the first glob completes dumping and
> >>>attempts to remove the snapshot ?
> >>>
> >>>I will revert that glob to user-tar dumptype for the time being.
> >>>
> >>>                                           thank you,
> >>>
> >>>                                           Brian
> >>> 
> >>>      
> >---
> >   Brian R Cuttler                 brian.cuttler AT wadsworth DOT org
> >   Computer Systems Support        (v) 518 486-1697
> >   Wadsworth Center                (f) 518 473-6384
> >   NYS Department of Health        Help Desk 518 473-0773
> >
> >
> >
> >IMPORTANT NOTICE: This e-mail and any attachments may contain
> >confidential or sensitive information which is, or may be, legally
> >privileged or otherwise protected by law from further disclosure.  It
> >is intended only for the addressee.  If you received this in error or
> >from someone who was not authorized to send it to you, please do not
> >distribute, copy or use it or any attachments.  Please notify the
> >sender immediately by reply e-mail and delete this from your
> >system. Thank you for your cooperation.
> >
> >  
> 
---
   Brian R Cuttler                 brian.cuttler AT wadsworth DOT org
   Computer Systems Support        (v) 518 486-1697
   Wadsworth Center                (f) 518 473-6384
   NYS Department of Health        Help Desk 518 473-0773



IMPORTANT NOTICE: This e-mail and any attachments may contain
confidential or sensitive information which is, or may be, legally
privileged or otherwise protected by law from further disclosure.  It
is intended only for the addressee.  If you received this in error or
from someone who was not authorized to send it to you, please do not
distribute, copy or use it or any attachments.  Please notify the
sender immediately by reply e-mail and delete this from your
system. Thank you for your cooperation.


Attachment: disklist
Description: Text document

<Prev in Thread] Current Thread [Next in Thread>