* [Qemu-devel] [PATCH 0/3 v4] Live migration without shared storage
@ 2009-10-12 15:13 lirans
0 siblings, 0 replies; 3+ messages in thread
From: lirans @ 2009-10-12 15:13 UTC (permalink / raw)
To: qemu-devel; +Cc: Liran Schour
This series adds support for live migration without shared storage, means
copy the storage while migrating. It was tested with KVM. Supports 2 ways
to replicate the storage during migration:
1. Complete copy of storage to destination
2. Assuming the storage is cow based, copy only the allocated
data, time of the migration will be linear with the amount of allocated
data (user responsibility to verify that the same backend file reside
on src and destination).
The code is being used by the Reservoir project: http://www.reservoir-fp7.eu/
Live migration will work as follows:
(qemu) migrate -d tcp:0:4444 # for ordinary live migration
(qemu) migrate -d blk tcp:0:4444 # for live migration with complete storage copy
(qemu) migrate -d blk inc tcp:0:4444 # for live migration with incremental storage copy, storage is cow based.
These patches addresses all previous comments.
Signed-off-by: Liran Schour <lirans@il.ibm.com>
---
Makefile | 1 +
block-migration.c | 624 +++++++++++++++++++++++++++++++++++++++++++++++++++++
block-migration.h | 30 +++
block.c | 27 +++
block.h | 6 +-
block_int.h | 1 +
buffered_file.c | 10 +-
hw/hw.h | 9 +-
migration-exec.c | 9 +-
migration-fd.c | 7 +-
migration-tcp.c | 7 +-
migration-unix.c | 7 +-
migration.c | 21 ++-
migration.h | 20 ++-
monitor.c | 38 +++-
qemu-monitor.hx | 13 +-
savevm.c | 62 ++++--
sysemu.h | 2 +-
vl.c | 6 +-
19 files changed, 851 insertions(+), 49 deletions(-)
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Qemu-devel] [PATCH 0/3 v4] Live migration without shared storage
2009-10-12 16:24 lirans
@ 2009-10-12 16:09 ` Michael Tokarev
0 siblings, 0 replies; 3+ messages in thread
From: Michael Tokarev @ 2009-10-12 16:09 UTC (permalink / raw)
To: lirans; +Cc: qemu-devel
lirans@il.ibm.com wrote:
> This series adds support for live migration without shared storage, means
> copy the storage while migrating. It was tested with KVM. Supports 2 ways
> to replicate the storage during migration:
> 1. Complete copy of storage to destination
> 2. Assuming the storage is cow based, copy only the allocated
> data, time of the migration will be linear with the amount of allocated
> data (user responsibility to verify that the same backend file reside
> on src and destination).
Hmm. How about something like:
migrate exec:"rsync file1 file2 ... remote: && nc remote port"
?
/mjt
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Qemu-devel] [PATCH 0/3 v4] Live migration without shared storage
@ 2009-10-12 16:24 lirans
2009-10-12 16:09 ` Michael Tokarev
0 siblings, 1 reply; 3+ messages in thread
From: lirans @ 2009-10-12 16:24 UTC (permalink / raw)
To: qemu-devel; +Cc: Liran Schour
This series adds support for live migration without shared storage, means
copy the storage while migrating. It was tested with KVM. Supports 2 ways
to replicate the storage during migration:
1. Complete copy of storage to destination
2. Assuming the storage is cow based, copy only the allocated
data, time of the migration will be linear with the amount of allocated
data (user responsibility to verify that the same backend file reside
on src and destination).
The code is being used by the Reservoir project: http://www.reservoir-fp7.eu/
Live migration will work as follows:
(qemu) migrate -d tcp:0:4444 # for ordinary live migration
(qemu) migrate -d blk tcp:0:4444 # for live migration with complete storage copy
(qemu) migrate -d blk inc tcp:0:4444 # for live migration with incremental storage copy, storage is cow based.
These patches addresses all previous comments.
Signed-off-by: Liran Schour <lirans@il.ibm.com>
---
Makefile | 1 +
block-migration.c | 624 +++++++++++++++++++++++++++++++++++++++++++++++++++++
block-migration.h | 30 +++
block.c | 27 +++
block.h | 6 +-
block_int.h | 1 +
buffered_file.c | 10 +-
hw/hw.h | 9 +-
migration-exec.c | 9 +-
migration-fd.c | 7 +-
migration-tcp.c | 7 +-
migration-unix.c | 7 +-
migration.c | 21 ++-
migration.h | 20 ++-
monitor.c | 38 +++-
qemu-monitor.hx | 13 +-
savevm.c | 62 ++++--
sysemu.h | 2 +-
vl.c | 6 +-
19 files changed, 851 insertions(+), 49 deletions(-)
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2009-10-12 16:09 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2009-10-12 15:13 [Qemu-devel] [PATCH 0/3 v4] Live migration without shared storage lirans
-- strict thread matches above, loose matches on Subject: below --
2009-10-12 16:24 lirans
2009-10-12 16:09 ` Michael Tokarev
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).