Bug 903910

RHEL-6 has the upstream commands (set_password, client_migrate_info) too.
They should be prefered even on RHEL-6.  They will not be forward-ported
to RHEL-7.

Bringing __com.redhat_qxl_screendump to RHEL-7 is a valid request though as upstream has no command for that (yet?).

Status update:

__com.redhat_qxl_screendump will not come back in rhel-7.

qemu console subsystem gets reworked upstream, screen dumps from any gfx device will be possible when done, no need for a special qxl hack.  First chunk of patches is merged, /me hopes to get it finished in time for qemu 1.5.

Not clear yet how the interface will look like, probably the normal screendump monitor command gets an optional parameter.

Status update:

qemu console subsystem rewrite is in 1.5, screendump monitor command update didn't made it and will be defered to 1.6.

So I'll go backport the new/updated upstream monitor command once merged upstream.  Failing that there is the fallback option to reimplement __com.redhat_qxl_screendump on rhel-7 (should be easy on top of the console subsystem rewrite).

Created attachment 783834 [details]
The ppm image got from  __com.redhat_qxl_screendump

Fix included in qemu-kvm-1.5.2-4.el7

Created attachment 788727 [details]
Successfully get the ppm image via __com.redhat_qxl_screendump by qemu-kvm1.5.4

I'm afraid the backport lost command documentation.  RHEL-6 has it in qemu-monitor.hx.  RHEL-7 needs it in qmp-commands.hx.  Without it, the command isn't documented in qemu-doc.{info,html}.

Err, make that qemu-doc.html.  We don't actually ship qemu-doc.info.

Add qmp-commands.txt.  Command is missing there in RHEL-6.

Created attachment 834887 [details]
Proposed documentation patch

Fix included in qemu-kvm-1.5.3-36.el7

Reproduced this bug.

Host:
qemu-kvm-1.3.0-3.el7.x86_64
ipxe-roms-qemu-20130517-2.gitc4bce43.el7.noarch
qemu-img-1.3.0-3.el7.x86_64
qemu-kvm-tools-1.3.0-3.el7.x86_64
qemu-kvm-common-1.3.0-3.el7.x86_64
qemu-kvm-debuginfo-1.3.0-3.el7.x86_64
kernel-3.7.0-0.36.el7.x86_64

Result:
Not found command "__com.redhat_qxl_screendump"
{"QMP": {"version": {"qemu": {"micro": 0, "minor": 3, "major": 1}, "package": ""}, "capabilities": []}}
{"execute":"qmp_capabilities"}
{"return": {}}
{"execute": "query-commands"}
{"return": [{"name": "query-target"}, {"name": "query-cpu-definitions"}, {"name": "query-machines"}, {"name": "device-list-properties"}, {"name": "qom-list-types"}, {"name": "change-vnc-password"}, {"name": "nbd-server-stop"}, {"name": "nbd-server-add"}, {"name": "nbd-server-start"}, {"name": "qom-get"}, {"name": "qom-set"}, {"name": "qom-list"}, {"name": "query-block-jobs"}, {"name": "query-balloon"}, {"name": "query-migrate-capabilities"}, {"name": "migrate-set-capabilities"}, {"name": "query-migrate"}, {"name": "query-uuid"}, {"name": "query-name"}, {"name": "query-spice"}, {"name": "query-vnc"}, {"name": "query-mice"}, {"name": "query-status"}, {"name": "query-kvm"}, {"name": "query-pci"}, {"name": "query-cpus"}, {"name": "query-blockstats"}, {"name": "query-block"}, {"name": "query-chardev"}, {"name": "query-events"}, {"name": "query-commands"}, {"name": "query-version"}, {"name": "human-monitor-command"}, {"name": "qmp_capabilities"}, {"name": "add_client"}, {"name": "expire_password"}, {"name": "set_password"}, {"name": "block_set_io_throttle"}, {"name": "block_passwd"}, {"name": "query-fdsets"}, {"name": "remove-fd"}, {"name": "add-fd"}, {"name": "closefd"}, {"name": "getfd"}, {"name": "set_link"}, {"name": "balloon"}, {"name": "drive-mirror"}, {"name": "blockdev-snapshot-sync"}, {"name": "transaction"}, {"name": "block-job-complete"}, {"name": "block-job-resume"}, {"name": "block-job-pause"}, {"name": "block-job-cancel"}, {"name": "block-job-set-speed"}, {"name": "block-commit"}, {"name": "block-stream"}, {"name": "block_resize"}, {"name": "netdev_del"}, {"name": "netdev_add"}, {"name": "dump-guest-memory"}, {"name": "client_migrate_info"}, {"name": "migrate_set_downtime"}, {"name": "migrate_set_speed"}, {"name": "query-migrate-cache-size"}, {"name": "migrate-set-cache-size"}, {"name": "migrate_cancel"}, {"name": "migrate"}, {"name": "xen-set-global-dirty-log"}, {"name": "xen-save-devices-state"}, {"name": "inject-nmi"}, {"name": "pmemsave"}, {"name": "memsave"}, {"name": "cpu"}, {"name": "send-key"}, {"name": "device_del"}, {"name": "device_add"}, {"name": "system_powerdown"}, {"name": "system_reset"}, {"name": "system_wakeup"}, {"name": "cont"}, {"name": "stop"}, {"name": "screendump"}, {"name": "change"}, {"name": "eject"}, {"name": "quit"}]}


Verified this bug with qemu-kvm-1.5.3-38.el7.x86_64.

Result:
{"QMP": {"version": {"qemu": {"micro": 3, "minor": 5, "major": 1}, "package": " (qemu-kvm-1.5.3-38.el7)"}, "capabilities": []}}
{"execute":"qmp_capabilities"}                                                  
{"return": {}}
{"execute":"__com.redhat_qxl_screendump","arguments":{"id":"video1","filename":"v1.ppm"}}
{"return": {}}

# ll v1.ppm 
-rw-r--r--. 1 root root 921615 Jan 21 16:48 v1.ppm

So this bug has been fixed.

This request was resolved in Red Hat Enterprise Linux 7.0.

Contact your manager or support representative in case you have further questions about the request.