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__init__.py 820 Bytes
asyncnotifier.py 6 kB
backend.py 105 kB
bdev.py 70.5 kB
bootstrap.py 28.7 kB
cli.py 95.8 kB
cmdlib.py 409.5 kB
compat.py 3.7 kB
config.py 62.4 kB
constants.py 34 kB
daemon.py 23.5 kB
errors.py 9.6 kB
ht.py 4 kB
jqueue.py 58.5 kB
jstore.py 3.7 kB
locking.py 48.2 kB
luxi.py 15.7 kB
mcpu.py 16.1 kB
netutils.py 13.6 kB
objects.py 43.4 kB
opcodes.py 36.7 kB
qlang.py 2.6 kB
query.py 35.2 kB
rpc.py 46.7 kB
runtime.py 3.3 kB
serializer.py 4.5 kB
ssconf.py 15.2 kB
ssh.py 8.6 kB
storage.py 12.7 kB
uidpool.py 11.8 kB
workerpool.py 13.3 kB

Latest revisions

# Date Author Comment
5279c6a6 03/18/2011 07:24 pm Apollon Oikonomopoulos

Shared block storage support

This patch introduces basic shared block storage support.

It introduces a new storage backend, bdev.PersistentBlockDevice, to
use as a backend for shared block storage. The new bdev requires a new
BLOCKDEV_DRIVER_MANUAL constant with the value "manual" and uses it as...
2e9635ca 03/18/2011 07:24 pm Apollon Oikonomopoulos

IAllocator changes to work with shared storage

Make cmdlib.IAllocator shared-storage-aware. IAllocator requires secondary
nodes only on DTS_NET_MIRROR disk templates and requires no secondaries for
DTS_EXT_MIRROR templates.

Signed-off-by: Apollon Oikonomopoulos <>...
e1d0c636 03/18/2011 07:24 pm Apollon Oikonomopoulos

Migration and failover: add iallocator and target_node slots

Add iallocator and target_node slots to OpMigrateInstance and
OpFailoverInstance to facilitate shared-storage-backed instance mobility. Add
iallocator slot to OpMigrateNode (no explicit target_node in this case)....
7b790b2e 03/18/2011 07:24 pm Apollon Oikonomopoulos

CLI changes to facilitate shared storage migration/failover

Add DST_NODE_OPT to cli.py to use for directly specifying the target node
during migration/failover.

gnt-instance failover/migrate also get passed an iallocator option.

gnt-node failover/migrate get only a target_node option....
27485a97 03/18/2011 07:24 pm Apollon Oikonomopoulos

Shared storage instance migration

Modify LUMigrateInstance and TLMigrateInstance to allow instance migrations for
instances with DTS_EXT_MIRROR disk templates.

Migrations of shared storage instances require either a target node, or an
iallocator to determine the target node. If none is given, the cluster default...
76cd67e4 03/18/2011 07:24 pm Apollon Oikonomopoulos

Shared storage node migration

Modify LUNodeMigrate to provide node migration for nodes with instances using
shared storage. gnt-node migrate has to be passed an iallocator for migration
of shared storage instances to be performed. When using a shared storage...
c83fc174 03/18/2011 07:24 pm Apollon Oikonomopoulos

Shared storage instance failover

Modify LUFailoverInstance to enable shared storage instances to failover.
Shared storage instance failover requires either a target node or an
iallocator to determine the target node. If none is given, the cluster default...
78f5c4dc 03/18/2011 07:24 pm Apollon Oikonomopoulos

KVM: use cache=none for shared disk templates

Disable host cache for externally mirrored disks to avoid cache incoherency.
Without this, migrations between the same two nodes may end up in disk
corruption.

This is a runtime override of cluster defaults, mostly a workaround....
36abf6f1 03/18/2011 07:24 pm Apollon Oikonomopoulos

Rename DTS_NET_MIRROR to DTS_INT_MIRROR

DTS_INT_MIRROR better contrasts DTS_EXT_MIRROR.

Signed-off-by: Apollon Oikonomopoulos <>
[: updated patch for changed context]
Signed-off-by: Iustin Pop <>
Reviewed-by: Iustin Pop <>
4d3e8d0e 03/18/2011 07:24 pm Iustin Pop

Instance failover: fix bug for INT_MIRROR cases

Patches db366d9a and aac4511a added support for EXT_MIRROR instances,
but inadvertently introduced a bug: for INT_MIRROR cases, we don't
need (actually we can't support) neither an iallocator nor a target
node....

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