ZFS - Backup configuration
none
Does anyone know how I can backup the config data (with zfs properties)
of the ZFS Filesystem ?
The background is when a ZFS Filesystem/Zpool is completely destroyed
(e.g rpool) I want easily recover the configuration data. After that I
can recover the user data.
I use TSM to backup the user data.
I don't want to use the commands zfs send/receive.
Regards,
Florian
Richard B. Gilbert
What about the commands you used to create the filesystem? If you wrote
a script to create it, rerunning that script should recreate the file
system. If you didn't write a script, do you remember the exact commands?
What problem are you trying to solve?
Florian Faltermeier
Hello Richard,
I can look in the zpool history. At every night I make a backup of the
zpool history command and copy it to another machine. But this cannot be
the best way. When I do a lot of things with the zfs/zpool commands the
configuration is changing again and again. When the system comes down
you have a lot to do with zfs commands.
What I want is, that I copy every night the actual ZFS configuration
(zfs properties, zpool properties, and so on) away. When the system
crashes so I can say: "No problem. I have an actual backup of my zfs
configuration". So I don't have to do a lot of things with the zfs
commands (zpool create, zfs set,...)
It was really good when there is for example a following feature
# zpool backup config -f config.file
# zpool restore config -f config.file
Regards,
Florian
Thank you.
Ian Collins
> Richard B. Gilbert schrieb:
>> none wrote:
>>> Hello,
>>>
>>> Does anyone know how I can backup the config data (with zfs
>>> properties) of the ZFS Filesystem ?
>>>
>>> The background is when a ZFS Filesystem/Zpool is completely destroyed
>>> (e.g rpool) I want easily recover the configuration data. After that
>>> I can recover the user data.
>>>
>>> I use TSM to backup the user data.
>>> I don't want to use the commands zfs send/receive.
>>
>> wrote a script to create it, rerunning that script should recreate the
>> file system. If you didn't write a script, do you remember the exact
>> commands?
>>
>> What problem are you trying to solve?
>
> Hello Richard,
>
> I can look in the zpool history. At every night I make a backup of the
> zpool history command and copy it to another machine. But this cannot be
> the best way. When I do a lot of things with the zfs/zpool commands the
> configuration is changing again and again. When the system comes down
> you have a lot to do with zfs commands.
Why can't you just do a recursive incremental send to to the other machine?
--
Ian Collins
Florian Faltermeier
I think that zfs send/receive don't backup all zfs configurations.
Regards,
Florian
Dick Hoogendijk
> I think that zfs send/receive don't backup all zfs configurations.
100% wrong.
--
Dick Hoogendijk -- PGP/GnuPG key: 01D2433D
+ http://nagual.nl/ | SunOS 10u7 05/09 | OpenSolaris 2010.03 b131
+ All that's really worth doing is what we do for others (Lewis Carrol)
Florian Faltermeier
> quoting Florian Faltermeier (Tue, 19 Jan 2010 09:23:43 +0100):
>> I think that zfs send/receive don't backup all zfs configurations.
>
> 100% wrong.
>
configuration? What I want is that I have only the zfs/zpool
configuration. Because the user data is backed up by TSM or NDMP.
Florian
Giorgos Keramidas
> Thanks for this information. Is this the only way to backup my zfs
> configuration? What I want is that I have only the zfs/zpool
> configuration. Because the user data is backed up by TSM or NDMP.
zfs send includes the filesystem data. If you only want to keep a
backup copy of the active zfs datasets and their properties, you can
probably use "zfs get all <dataset>" on all of them.
cindy
wrote:
> On Tue, 19 Jan 2010 12:54:34 +0100, Florian Faltermeier <florian-m...@gmx.net> wrote:
> > Thanks for this information. Is this the only way to backup my zfs
> > configuration? What I want is that I have only the zfs/zpool
> > configuration. Because the user data is backed up by TSM or NDMP.
>
> zfs send includes the filesystem data. If you only want to keep a
> backup copy of the active zfs datasets and their properties, you can
> probably use "zfs get all <dataset>" on all of them.
Florian is asking for a solution that copies his pool configuration
information,
not his dataset properties, and currently no easy way exists to save
the pool
configuration.
Florian, we are working on providing a pool recovery solution, we're
just not
there yet. A combination of zfs dataset snapshots and capturing your
zpool
history output can provide a workable recovery solution in the
meantime.
If you are using the Solaris 10 release, you might consider creating a
ZFS
flash archive (for a total pool recovery) or if you are using the
Solaris Nevada
or OpenSolaris release, build 131 includes the zpool split feature
that
allows you to split a mirrored pool to create an identical pool.
Neither are
true backup solutions but might give you ideas until we provide a pool
recovery tool.
Thanks,
Cindy
Florian Faltermeier
Thanks.
Florian