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[Qemu-block] [PATCH v13 00/10] Block replication for continuous checkpoi
From: |
Changlong Xie |
Subject: |
[Qemu-block] [PATCH v13 00/10] Block replication for continuous checkpoints |
Date: |
Fri, 25 Dec 2015 18:30:24 +0800 |
Block replication is a very important feature which is used for
continuous checkpoints(for example: COLO).
You can get the detailed information about block replication from here:
http://wiki.qemu.org/Features/BlockReplication
Usage:
Please refer to docs/block-replication.txt
This patch series is based on the following patch series:
1. http://lists.nongnu.org/archive/html/qemu-devel/2015-12/msg04570.html
You can get the patch here:
https://github.com/Pating/qemu/tree/changlox/block-replication-v13
You can get the patch with framework here:
https://github.com/Pating/qemu/tree/changlox/colo_framework_v12
TODO:
1. Continuous block replication. It will be started after basic functions
are accepted.
Changs Log:
V13:
1. Rebase to the newest codes
2. Remove redundant marcos and semicolon in replication.c
3. Fix typos in block-replication.txt
V12:
1. Rebase to the newest codes
2. Use backing reference to replcace 'allow-write-backing-file'
V11:
1. Reopen the backing file when starting blcok replication if it is not
opened in R/W mode
2. Unblock BLOCK_OP_TYPE_BACKUP_SOURCE and BLOCK_OP_TYPE_BACKUP_TARGET
when opening backing file
3. Block the top BDS so there is only one block job for the top BDS and
its backing chain.
V10:
1. Use blockdev-remove-medium and blockdev-insert-medium to replace backing
reference.
2. Address the comments from Eric Blake
V9:
1. Update the error messages
2. Rebase to the newest qemu
3. Split child add/delete support. These patches are sent in another patchset.
V8:
1. Address Alberto Garcia's comments
V7:
1. Implement adding/removing quorum child. Remove the option non-connect.
2. Simplify the backing refrence option according to Stefan Hajnoczi's
suggestion
V6:
1. Rebase to the newest qemu.
V5:
1. Address the comments from Gong Lei
2. Speed the failover up. The secondary vm can take over very quickly even
if there are too many I/O requests.
V4:
1. Introduce a new driver replication to avoid touch nbd and qcow2.
V3:
1: use error_setg() instead of error_set()
2. Add a new block job API
3. Active disk, hidden disk and nbd target uses the same AioContext
4. Add a testcase to test new hbitmap API
V2:
1. Redesign the secondary qemu(use image-fleecing)
2. Use Error objects to return error message
3. Address the comments from Max Reitz and Eric Blake
Wen Congyang (10):
unblock backup operations in backing file
Store parent BDS in BdrvChild
Backup: clear all bitmap when doing block checkpoint
Allow creating backup jobs when opening BDS
docs: block replication's description
Add new block driver interfaces to control block replication
quorum: implement block driver interfaces for block replication
Implement new driver for block replication
support replication driver in blockdev-add
Add a new API to start/stop replication, do checkpoint to all BDSes
block.c | 145 ++++++++++++
block/Makefile.objs | 3 +-
block/backup.c | 14 ++
block/quorum.c | 78 +++++++
block/replication.c | 545 +++++++++++++++++++++++++++++++++++++++++++++
blockjob.c | 11 +
docs/block-replication.txt | 227 +++++++++++++++++++
include/block/block.h | 9 +
include/block/block_int.h | 15 ++
include/block/blockjob.h | 12 +
qapi/block-core.json | 33 ++-
11 files changed, 1089 insertions(+), 3 deletions(-)
create mode 100644 block/replication.c
create mode 100644 docs/block-replication.txt
--
1.9.3
- [Qemu-block] [PATCH v13 00/10] Block replication for continuous checkpoints,
Changlong Xie <=
- [Qemu-block] [PATCH v13 01/10] unblock backup operations in backing file, Changlong Xie, 2015/12/25
- [Qemu-block] [PATCH v13 03/10] Backup: clear all bitmap when doing block checkpoint, Changlong Xie, 2015/12/25
- [Qemu-block] [PATCH v13 02/10] Store parent BDS in BdrvChild, Changlong Xie, 2015/12/25
- [Qemu-block] [PATCH v13 05/10] docs: block replication's description, Changlong Xie, 2015/12/25
- [Qemu-block] [PATCH v13 06/10] Add new block driver interfaces to control block replication, Changlong Xie, 2015/12/25
- [Qemu-block] [PATCH v13 04/10] Allow creating backup jobs when opening BDS, Changlong Xie, 2015/12/25
- [Qemu-block] [PATCH v13 09/10] support replication driver in blockdev-add, Changlong Xie, 2015/12/25
- [Qemu-block] [PATCH v13 07/10] quorum: implement block driver interfaces for block replication, Changlong Xie, 2015/12/25
- [Qemu-block] [PATCH v13 10/10] Add a new API to start/stop replication, do checkpoint to all BDSes, Changlong Xie, 2015/12/25
- [Qemu-block] [PATCH v13 08/10] Implement new driver for block replication, Changlong Xie, 2015/12/25