[DRBD-user] Linstor-server 0.6.3, Linstor-client 0.6.1 release

[Rene Peinthor]

Hi All!

After the two hot fix releases from last week, we have another release with
mainly fixes, but not so dramatically and a new feature with supporting ZFS
thin storage pools.

ZFS thin storage pool use the same syntax as all the other storage pool
drivers e.g.:
linstor storage-pool create zfsthin node zfsthinpool tank

linstor-server 0.6.3
--------------------
* Add zfs thin support
* Fix a race condition with drbd reading incomplete res files
* Fix 100% cpu usage on satellite startup if drbd-utils missing
* Fix access to deleted volume data
* Fix satellite timeout if a external command takes too long
* Fix missing resource definition delete on node lost

http://www.linbit.com/downloads/linstor/linstor-server-0.6.3.tar.gz

linstor-client 0.6.1
--------------------
* Add zfs thin to supported storage pool drivers
* Fix possible client waiting forever for a completed reply
* Fix missing lock for replies

http://www.linbit.com/downloads/linstor/python-linstor-0.6.1.tar.gz
http://www.linbit.com/downloads/linstor/linstor-client-0.6.1.tar.gz

Linstor PPA:
https://launchpad.net/~linbit/+archive/ubuntu/linbit-drbd9-stack

Best regards,
Rene
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René Peinthor - Software Developer
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[Julien Escario]

Post by Rene Peinthor
Hi All!

Hello !

Post by Rene Peinthor
After the two hot fix releases from last week, we have another release with
mainly fixes, but not so dramatically and a new feature with supporting ZFS thin
storage pools.
ZFS thin storage pool use the same syntax as all the other storage pool drivers
linstor storage-pool create zfsthin node zfsthinpool tank

Great !
One remark : perhaps can you update/close
https://github.com/LINBIT/linstor-server/issues/1 ?

And one question : is there a way to 'convert' an existing storage-pool from zfs
to zfsthin ?

Best regards,
Julien Escario

[Rene Peinthor]

Post by Julien Escario
And one question : is there a way to 'convert' an existing storage-pool from zfs
to zfsthin ?

No userfriendly way, it might be possible with 1 or 2 direct database
queries.

Cheers,
Rene

[Julien Escario]

Post by Julien Escario
And one question : is there a way to 'convert' an existing storage-pool from zfs
to zfsthin ?
No userfriendly way, it might be possible with 1 or 2 direct database queries.

Hello,
Just about to test another method : what will happen if I run
# linstor storage-pool delete drbdpool nodeA
# linstor storage-pool create nodeA drbdpool zfsthinpool drbdpool

Will this delete my ressources ? Or simply refuse to operate due to ressourcex
existence ?

Thanks a lot,
Julien

[Rene Peinthor]

It is not possible to delete a storage pool that is still in use by some
resources/volumes.

Cheers,
Rene

[Julien Escario]

Post by Rene Peinthor
It is not possible to delete a storage pool that is still in use by some
resources/volumes.

Thanks !
I removed all ressource then delete storage-pool and recreate it as zfsthin.

linstor storage-pool create zfsthin nodeA drbdpool drbdpool

Everything went fine but when I create a ressource, the initial sync still takes
happens.

Did I miss something or the ZFSthin storage plugin is only for thin for the
creation node ?
Because, as-this, thin provision isn't really used on secondary node(s).

Best regards,
Julien

[Robert Altnoeder]

Post by Julien Escario
Did I miss something or the ZFSthin storage plugin is only for thin
for the creation node ?

Is the resource using thin provisioning on all of the nodes?

Mixing fat provisioning on some nodes and thin provisioning on other
nodes for the same volume of a resource is not supported.

br,
Robert

[Julien Escario]

Post by Robert Altnoeder

Post by Julien Escario
Did I miss something or the ZFSthin storage plugin is only for thin
for the creation node ?

Is the resource using thin provisioning on all of the nodes?
Mixing fat provisioning on some nodes and thin provisioning on other
nodes for the same volume of a resource is not supported.

Seems to :
╭─────────────────────────────────────────────────────────────────────────────────────────────────────╮
┊ StoragePool ┊ Node ┊ Driver ┊ PoolName ┊ FreeCapacity ┊
TotalCapacity ┊ SupportsSnapshots ┊
╞┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄╡
┊ drbdpool ┊ nodeA ┊ ZfsThinDriver ┊ drbdpool ┊ 6.93 TiB ┊ 9.06
TiB ┊ true ┊
┊ drbdpool ┊ nodeB ┊ ZfsThinDriver ┊ drbdpool ┊ 6.93 TiB ┊ 9.06
TiB ┊ true ┊
╰─────────────────────────────────────────────────────────────────────────────────────────────────────╯

Julien

[Rene Peinthor]

Thanks for reporting, this is a bug in the thin driver.
It wasn't probably marked as a thin driver and will still do full resync,
will be fixed in the next version.

Best regards,
Rene

[Julien Escario]

Post by Rene Peinthor
Thanks for reporting, this is a bug in the thin driver.
It wasn't probably marked as a thin driver and will still do full resync, will
be fixed in the next version.

Nice to hear !
Anything of my side I can do to try to fix this and/or confirm bug ? (force thin
mark somewhere ?)

Best regards,
Julien Escario