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[Qemu-devel] [PATCH v7 0/4] Add subcommand compare for qemu-img
From: |
mrezanin |
Subject: |
[Qemu-devel] [PATCH v7 0/4] Add subcommand compare for qemu-img |
Date: |
Mon, 17 Dec 2012 14:39:49 +0100 |
From: Miroslav Rezanina <address@hidden>
This is seventh version of patch adding compare subcommand that
compares two images. Compare has following criteria:
- only data part is compared
- unallocated sectors are not read
- in case of different image size, exceeding part of bigger disk has
to be zeroed/unallocated to compare rest
- qemu-img returns:
- 0 if images are identical
- 1 if images differ
- 2 on error
v7:
- split patch into pieces
- Quiet mode added for all relevant subcommands
- check non-shared part of disk after shared one
- minor docummentation and naming fixes
v6:
- added handling -?, -h options for compare subcommand
v5 (only minor changes):
- removed redundant comment
- removed dead code (goto after help())
- set final total_sectors on first assignment
v4:
- Fixed various typos
- Added functions for empty sector check and sector-to-bytes offset
conversion
- Fixed command-line parameters processing
v3:
- options -f/-F are orthogonal
- documentation updated to new syntax and behavior
- used byte offset instead of sector number for output
v2:
- changed option for second image format to -F
- changed handling of -f and -F [1]
- added strict mode (-s)
- added quiet mode (-q)
- improved output messages [2]
- rename variables for larger image handling
- added man page content
Signed-off-by: Miroslav Rezanina <address@hidden>
Miroslav Rezanina (4):
block: Add synchronous wrapper for bdrv_co_is_allocated_above
qemu-img: Add "Quiet mode" option
qemu-img: Add compare subcommand
Add qemu-img compare documentation
block.c | 50 +++++++-
block.h | 4 +-
blockdev.c | 6 +-
qemu-img-cmds.hx | 34 +++--
qemu-img.c | 383 ++++++++++++++++++++++++++++++++++++++++++++++++++-----
qemu-img.texi | 35 +++++
6 files changed, 460 insertions(+), 52 deletions(-)
--
1.7.11.7