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Copyright (c) 2016-2024 YOUPLUS
Author: YOUPLUS(zhang_youjia@126.com)
qcow2-dump is a useful tool for checking and repairing damaged qcow2 image, it has some improvements compare with qemu-img check command (qcow2-dump has all functions which qemu-img check command has).
what's error? (type of error) where's error? (posistion of error) Can it be repaired? How to repair it? (repairing advice)
qcow2-dump [opts] <qcow2_image>
qcow2-dump -h Usage: qcow2-dump [-l] [-f] [-m info|check|error|dump] [-o refcount|snapshot|all] [-s active|inactive|all|id/name] filename -h | --help -v | --version -H | --header -K | --dmesg -l | --lock -f | --flags -b | --base -c | --compress -M | --mark corrupt|dirty -C | --clean corrupt|dirty -V | --value dec/hex value -O | --offset dec/hex offset -S | --src dec/hex offset -F | --file source of -m copy -w | --width 1/2/4/8/... byte(s) -A | --apply snapshot[N]|snapshot id/name -D | --delete snapshot[N]|snapshot id/name -E | --exclude snapshot[N]|snapshot id/name -d | --display off|color [default: color] -o | --output refcount|snapshot|all [default: all] -s | --snapshot active|inactive|all|id/name [default: all] -R | --repair off|check|leak|error|reuse|discard|all [default: check] -m | --mode info|check|error|dump|edit|copy|rebase [default: check] [SAFE OPERATION]: eg: qcow2-dump -m info filename eg: qcow2-dump [-m check] [-K] filename eg: qcow2-dump [-m check] [-K] -c filename eg: qcow2-dump [-m check] [-K] -l filename eg: qcow2-dump -m error [-K] filename eg: qcow2-dump -m error [-K] -c filename eg: qcow2-dump -m error [-K] -l filename eg: qcow2-dump -m dump [-K] filename > /var/dump.log eg: qcow2-dump -m dump [-K] -c filename > /var/dump.log eg: qcow2-dump -m dump [-K] -f filename > /var/dump.log eg: qcow2-dump -m dump [-K] -l filename > /var/dump.log [DANGEROUS OPERATION]: eg: qcow2-dump -A snapshot id/name filename eg: qcow2-dump -A snapshot[N] filename eg: qcow2-dump -D snapshot id/name filename eg: qcow2-dump -D snapshot[N] filename eg: qcow2-dump -D all filename eg: qcow2-dump -E snapshot id/name filename eg: qcow2-dump -E snapshot[N] filename eg: qcow2-dump -E 0 filename eg: qcow2-dump -R leak|error|reuse|discard|all filename eg: qcow2-dump -m rebase -F backing_file [-b] filename eg: qcow2-dump -m edit -O offset -V value [-w 8] filename eg: qcow2-dump -m edit -O offset -V value -w 1/2/4/8 filename eg: qcow2-dump -m copy -O offset -S offset -w length filename eg: qcow2-dump -m copy -O offset -S offset -w length [-F source] filename eg: qcow2-dump -C corrupt filename eg: qcow2-dump -M corrupt filename [EXAMPLES]: eg: qcow2-dump [-m check] filename > /dev/null; echo $? eg: qcow2-dump [-m check] -d none filename > /var/check.log eg: qcow2-dump -m error filename > /var/error.log eg: qcow2-dump -m error -R none filename > /var/error.log eg: qcow2-dump -m error -o refcount filename > /var/refcount.log eg: qcow2-dump -m error -o snapshot filename > /var/snapshot.log eg: qcow2-dump -m error -s active filename > /var/active.log eg: qcow2-dump -m error -s inactive filename > /var/inactive.log eg: qcow2-dump -m dump -o refcount filename > /var/refcount.log eg: qcow2-dump -m dump -o snapshot filename > /var/snapshot.log eg: qcow2-dump -m dump -o snapshot -s active filename > /var/active.log eg: qcow2-dump -m dump -o snapshot -s 1 filename > /var/snapshot1.log eg: qcow2-dump -m dump -o snapshot -s inactive filename > /var/inactive.log eg: qcow2-dump -m dump -f -o snapshot -s active filename > /var/active.log
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qcow2-dump filename
qcow2-dump -m error filename
qcow2-dump -R all filename
