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hmp: Make "info block" output more readable 

HMP is meant for humans and you should notice it.

This changes the output format to use a bit more space to display the
information more readable and leaves out irrelevant information (e.g.
mention only that an image is encrypted, but not when it's not; display
I/O limits only if throttling is in effect; ...)

Before:

    (qemu) info block
    ide0-hd0: removable=0 io-status=ok file=/tmp/overlay.qcow2
    backing_file=/tmp/backing.img backing_file_depth=1 ro=0 drv=qcow2
    encrypted=1 bps=0 bps_rd=0 bps_wr=0 iops=1024 iops_rd=0 iops_wr=0
    ide1-cd0: removable=1 locked=0 tray-open=0 io-status=ok
    file=/home/kwolf/images/iso/Fedora-18-x86_64-Live-Desktop.iso ro=1
    drv=raw encrypted=0 bps=0 bps_rd=0 bps_wr=0 iops=0 iops_rd=0 iops_wr=0
    floppy0: removable=1 locked=0 tray-open=0 [not inserted]
    sd0: removable=1 locked=0 tray-open=0 [not inserted]

After:

    (qemu) info block
    ide0-hd0: /tmp/overlay.qcow2 (qcow2, encrypted)
        Backing file:     /tmp/backing.img (chain depth: 1)
        I/O limits:       bps=0 bps_rd=0 bps_wr=0 iops=1024 iops_rd=0 iops_wr=0

    ide1-cd0: /home/kwolf/images/iso/Fedora-18-x86_64-Live-Desktop.iso (raw, read-only)
        Removable device: not locked, tray closed

    floppy0: [not inserted]
        Removable device: not locked, tray closed

    sd0: [not inserted]
        Removable device: not locked, tray closed

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Acked-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
This commit is contained in:
Kevin Wolf 2013-06-19 16:10:55 +02:00 committed by Luiz Capitulino
parent 36125631e7
commit fbe2e26c15
1 changed files with 56 additions and 40 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

96
hmp.c
View File

@ -291,62 +291,78 @@ void hmp_info_block(Monitor *mon, const QDict *qdict)
if (device && strcmp(device, info->value->device)) {
continue;
}
monitor_printf(mon, "%s: removable=%d",
info->value->device, info->value->removable);
if (info->value->removable) {
monitor_printf(mon, " locked=%d", info->value->locked);
monitor_printf(mon, " tray-open=%d", info->value->tray_open);
if (info != block_list) {
monitor_printf(mon, "\n");
}
if (info->value->has_io_status) {
monitor_printf(mon, " io-status=%s",
monitor_printf(mon, "%s", info->value->device);
if (info->value->has_inserted) {
monitor_printf(mon, ": %s (%s%s%s)\n",
info->value->inserted->file,
info->value->inserted->drv,
info->value->inserted->ro ? ", read-only" : "",
info->value->inserted->encrypted ? ", encrypted" : "");
} else {
monitor_printf(mon, ": [not inserted]\n");
}
if (info->value->has_io_status && info->value->io_status != BLOCK_DEVICE_IO_STATUS_OK) {
monitor_printf(mon, " I/O status: %s\n",
BlockDeviceIoStatus_lookup[info->value->io_status]);
}
if (info->value->has_inserted) {
monitor_printf(mon, " file=");
monitor_print_filename(mon, info->value->inserted->file);
if (info->value->removable) {
monitor_printf(mon, " Removable device: %slocked, tray %s\n",
info->value->locked ? "" : "not ",
info->value->tray_open ? "open" : "closed");
}
if (info->value->inserted->has_backing_file) {
monitor_printf(mon, " backing_file=");
monitor_print_filename(mon, info->value->inserted->backing_file);
monitor_printf(mon, " backing_file_depth=%" PRId64,
info->value->inserted->backing_file_depth);
}
monitor_printf(mon, " ro=%d drv=%s encrypted=%d",
info->value->inserted->ro,
info->value->inserted->drv,
info->value->inserted->encrypted);
monitor_printf(mon, " bps=%" PRId64 " bps_rd=%" PRId64
" bps_wr=%" PRId64 " iops=%" PRId64
" iops_rd=%" PRId64 " iops_wr=%" PRId64,
if (!info->value->has_inserted) {
continue;
}
if (info->value->inserted->has_backing_file) {
monitor_printf(mon,
" Backing file: %s "
"(chain depth: %" PRId64 ")\n",
info->value->inserted->backing_file,
info->value->inserted->backing_file_depth);
}
if (info->value->inserted->bps
|| info->value->inserted->bps_rd
|| info->value->inserted->bps_wr
|| info->value->inserted->iops
|| info->value->inserted->iops_rd
|| info->value->inserted->iops_wr)
{
monitor_printf(mon, " I/O throttling: bps=%" PRId64
" bps_rd=%" PRId64 " bps_wr=%" PRId64
" iops=%" PRId64 " iops_rd=%" PRId64
" iops_wr=%" PRId64 "\n",
info->value->inserted->bps,
info->value->inserted->bps_rd,
info->value->inserted->bps_wr,
info->value->inserted->iops,
info->value->inserted->iops_rd,
info->value->inserted->iops_wr);
if (verbose) {
monitor_printf(mon, " images:\n");
image_info = info->value->inserted->image;
while (1) {
bdrv_image_info_dump((fprintf_function)monitor_printf,
mon, image_info);
if (image_info->has_backing_image) {
image_info = image_info->backing_image;
} else {
break;
}
}
}
} else {
monitor_printf(mon, " [not inserted]");
}
monitor_printf(mon, "\n");
if (verbose) {
monitor_printf(mon, "\nImages:\n");
image_info = info->value->inserted->image;
while (1) {
bdrv_image_info_dump((fprintf_function)monitor_printf,
mon, image_info);
if (image_info->has_backing_image) {
image_info = image_info->backing_image;
} else {
break;
}
}
}
}
qapi_free_BlockInfoList(block_list);