--- Begin Message ---
This patch series implement qcow2 external snapshot support for files && lvm
volumes
The current internal qcow2 snapshots have bad write performance because no
metadatas can be preallocated.
This is particulary visible on a shared filesystem like ocfs2 or gfs2.
Also other bugs are freeze/lock reported by users since years on snapshots
delete on nfs
(The disk access seem to be frozen during all the delete duration)
This also open doors for remote snapshot export-import for storage replication.
Changelog v7:
- rebased on fiona blockdev work
MAIN TODO:
- add snapshots tests in both pve-storage && qemu-server
- better handle snapshot failure with multiple disks
pve-storage:
Alexandre Derumier (10):
tests: add lvmplugin test
common: add qemu_img_create an preallocation_cmd_option
common: qemu_img_create: add backing_file support
rename_volume: add source && target snap
common: add qemu_img_info helper
common: add qemu-img measure
storage: volume_snapshot: add $running param
qcow2: add external snapshot support
lvmplugin: add qcow2 snapshot
storage : add volume_support_qemu_snapshot
src/PVE/Storage.pm | 34 +-
src/PVE/Storage/Common.pm | 116 ++++++
src/PVE/Storage/DirPlugin.pm | 11 +
src/PVE/Storage/ESXiPlugin.pm | 2 +-
src/PVE/Storage/ISCSIDirectPlugin.pm | 2 +-
src/PVE/Storage/LVMPlugin.pm | 519 ++++++++++++++++++++----
src/PVE/Storage/LvmThinPlugin.pm | 2 +-
src/PVE/Storage/PBSPlugin.pm | 2 +-
src/PVE/Storage/Plugin.pm | 376 ++++++++++++-----
src/PVE/Storage/RBDPlugin.pm | 8 +-
src/PVE/Storage/ZFSPoolPlugin.pm | 2 +-
src/test/Makefile | 5 +-
src/test/run_test_lvmplugin.pl | 577 +++++++++++++++++++++++++++
13 files changed, 1465 insertions(+), 191 deletions(-)
create mode 100755 src/test/run_test_lvmplugin.pl
qemu-server:
Alexandre Derumier (3):
qemu_img convert : add external snapshot support
blockdev: add backing_chain support
qcow2: add external snapshot support
src/PVE/QemuConfig.pm | 4 +-
src/PVE/QemuServer.pm | 132 +++++--
src/PVE/QemuServer/Blockdev.pm | 345 +++++++++++++++++-
src/PVE/QemuServer/QemuImage.pm | 6 +-
src/test/cfg2cmd/simple-backingchain.conf | 25 ++
src/test/cfg2cmd/simple-backingchain.conf.cmd | 33 ++
src/test/run_config2command_tests.pl | 47 +++
src/test/run_qemu_img_convert_tests.pl | 59 +++
src/test/snapshot-test.pm | 4 +-
9 files changed, 620 insertions(+), 35 deletions(-)
create mode 100644 src/test/cfg2cmd/simple-backingchain.conf
create mode 100644 src/test/cfg2cmd/simple-backingchain.conf.cmd
--
2.39.5
--- End Message ---
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