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1 From aa580be154923056a52fdeec429f7e80f04b456e Mon Sep 17 00:00:00 2001
2 From: Dietmar Maurer <dietmar@proxmox.com>
3 Date: Thu, 21 Feb 2013 12:22:41 +0100
4 Subject: [PATCH v5 0/6] Efficient VM backup for qemu
5
6 This series provides a way to efficiently backup VMs.
7
8 * Backup to a single archive file
9 * Backup contain all data to restore VM (full backup)
10 * Do not depend on storage type or image format
11 * Avoid use of temporary storage
12 * store sparse images efficiently
13
14 The file docs/backup.txt contains more details.
15
16 Changes since v1:
17
18 * fix spelling errors
19 * move BackupInfo from BDS to BackupBlockJob
20 * introduce BackupDriver to allow more than one backup format
21 * vma: add suport to store vmstate (size is not known in advance)
22 * add ability to store VM state
23
24 Changes since v2:
25
26 * BackupDriver: remove cancel_cb
27 * use enum for BackupFormat
28 * vma: use bdrv_open instead of bdrv_file_open
29 * vma: fix aio, use O_DIRECT
30 * backup one drive after another (try to avoid high load)
31
32 Changes since v3:
33
34 * move reviewer info from commit messages to cover-letter
35 * remove 'RFC' from log headers and file names
36 * removed comment about slow qcow2 snapshot bug
37 * fix spelling errors
38 * fixed copyright
39 * change 'backupfile' parameter name to 'backup-file'
40 * change 'config-filename' parameter name to 'config-file'
41 * add documentation for 'devlist' parameter.
42 * rename backup_cancel to backup-cancel
43
44 Changes since v4:
45
46 * vma create: write verbose output to stderr (not stdout)
47 * backup.c: use rwlock instead of sleep, remove backup_in_progress_count
48 * BackupDriver: remove '_cb' suffix
49 * include cleanups suggested by Stefan
50 * use CHAR_BIT instead of magic number '8'
51 * implemented bdrv_co_is_allocated_above() - disabled for now because
52 it actually slows down backup speed by 15%
53 * extend regression tests to test unallocated regions
54
55 Dietmar Maurer (6):
56 add documenation for new backup framework
57 add basic backup support to block driver
58 add backup related monitor commands
59 introduce new vma archive format
60 add regression tests for backup
61 add vm state to backups
62
63 Makefile | 3 +-
64 Makefile.objs | 1 +
65 backup.c | 355 +++++++++++++++++
66 backup.h | 45 +++
67 block.c | 71 ++++-
68 blockdev.c | 617 ++++++++++++++++++++++++++++++
69 docs/backup.txt | 116 ++++++
70 docs/specs/vma_spec.txt | 24 ++
71 hmp-commands.hx | 31 ++
72 hmp.c | 64 ++++
73 hmp.h | 3 +
74 include/block/block.h | 2 +
75 include/block/blockjob.h | 10 +
76 monitor.c | 7 +
77 qapi-schema.json | 98 +++++
78 qmp-commands.hx | 27 ++
79 tests/Makefile | 11 +-
80 tests/backup-test.c | 529 ++++++++++++++++++++++++++
81 vma-reader.c | 799 +++++++++++++++++++++++++++++++++++++++
82 vma-writer.c | 940 ++++++++++++++++++++++++++++++++++++++++++++++
83 vma.c | 561 +++++++++++++++++++++++++++
84 vma.h | 145 +++++++
85 22 files changed, 4450 insertions(+), 9 deletions(-)
86 create mode 100644 backup.c
87 create mode 100644 backup.h
88 create mode 100644 docs/backup.txt
89 create mode 100644 docs/specs/vma_spec.txt
90 create mode 100644 tests/backup-test.c
91 create mode 100644 vma-reader.c
92 create mode 100644 vma-writer.c
93 create mode 100644 vma.c
94 create mode 100644 vma.h
95
96 --
97 1.7.2.5
98