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>
diff --git a/hmp.c b/hmp.c
index 148a3fb..2daed43 100644
--- a/hmp.c
+++ b/hmp.c
@@ -291,62 +291,78 @@
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);
