1）如果qemu-img convert -S 0 那么就会直接返回false，表示不能通过unmap进行清0动作。2）在此函数里通过调用bdrv_get_info()--->raw_get_info()取得discard—zero标记判定。此标记在raw_open_common()里判定块设备没有设置BDRV_O_NOCACHE标记时刻，设置discard-zero标记为Fasle，其他情况块设备如果...
(4) 判断migrate协议:TCP/UNIX/EXEC/FD 开始迁移。 调用tcp_start_outgoing_migration(s, p, errp) {p:=host_port} 或exec_start_outgoing_migration(s, p) 或unix_start_outgoing_migration(s, p) 或fd_start_outgoing_migration(s, p) 在这里,假设用的是tcp协议。 tcp_start_outgoing_migration(s, p...
limactl create --plain --tty=false 19.88s user 1.47s system 116% cpu 18.294 total qemu-img convert with different number of coroutines % SRC=/Users/nsoffer/Library/Caches/lima/download/by-url-sha256/346ee1ff9e381b78ba08e2a29445960b5cd31c51f896fc346b82e26e345a5b9a/data % for i in ...
convert 转化镜像的格式，（raw，qcow ……）snapshot 管理镜像的快照 rebase 在已有的镜像的基础上创建新的镜像 resize 增加或减小镜像大小 创建镜像 qemu-img create -f <fmt> -o <options> <fname> <size> 举例：qemu-img create -f raw -o size=4G /images/vm2.r...
disks, CPU’s, networks etc. Qemu is the user space tool used to provide these to the kernel level virtualization tool KVM. Disk is one of the most important device in the virtual systems. Qemu-img is the tool used to create, manage, convert shrink etc. the disk images of virtual mach...
Note that setting this option doesn't yet cause the image to actually receive compressed writes. It is most commonly used with the -c option of qemu-img convert, but can also be used with the compress filter driver or backup block jobs with compression enabled. Valid values are zlib and ...
Number of parallel coroutines for the convert process @item -W Allow out-of-order writes to the destination. This option improves performance, but is only recommended for preallocated devices like host devices or other raw block devices. @end table Parameters to dd subcommand: @table...
"convert [--object objectdef] [--image-opts] [--target-image-opts] [-U] [-c] [-p] [-q] [-n] [-f fmt] [-t cache] [-T src_cache] [-O output_fmt] [-B backing_file] [-o options] [-s snapshot_id_or_name] [-l snapshot_param] [-S sparse_size] [-m num_coroutine...
qemu-img convert /somepath/gkpics01.vhdx -O vhdx -o subformat=fixed /mnt/a16/gkpics01.vhdxorqemu-img create -f vhdx -o block_size=32M,subformat=fixed /mnt/a16/gkpics01.vhdx 99723771904qemu-nbd connect, then partition it with gdisk, then format it ntfs. ...
static void convert_select_part(ImgConvertState *s, int64_t sector_num) { assert(sector_num >= s->src_cur_offset); while (sector_num - s->src_cur_offset >= s->src_sectors[s->src_cur]) { s->src_cur_offset += s->src_sectors[s->src_cur]; s->src_cur++; assert(...