[libvirt] [PATCH 3/5] qemu: add support for logging chardev output to a file
John Ferlan
jferlan at redhat.com
Fri Feb 26 15:33:20 UTC 2016
On 02/23/2016 11:41 AM, Daniel P. Berrange wrote:
> Honour the <log file='...'/> element in chardevs to output
> data to a file. This requires QEMU >= 2.6
>
> Signed-off-by: Daniel P. Berrange <berrange at redhat.com>
> ---
> src/qemu/qemu_capabilities.c | 2 ++
> src/qemu/qemu_capabilities.h | 1 +
> src/qemu/qemu_command.c | 19 +++++++++++
> .../qemuxml2argv-serial-file-log.args | 25 ++++++++++++++
> .../qemuxml2argv-serial-file-log.xml | 39 ++++++++++++++++++++++
> tests/qemuxml2argvtest.c | 2 ++
> 6 files changed, 88 insertions(+)
> create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-serial-file-log.args
> create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-serial-file-log.xml
>
Seems reasonable - although as a heads up you could have conflicts with
Pavel's vram64 series...
John
> diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
> index 2b953ea..c8f41a3 100644
> --- a/src/qemu/qemu_capabilities.c
> +++ b/src/qemu/qemu_capabilities.c
> @@ -315,6 +315,7 @@ VIR_ENUM_IMPL(virQEMUCaps, QEMU_CAPS_LAST,
> "vserport-change-event", /* 210 */
> "virtio-balloon-pci.deflate-on-oom",
> "mptsas1068",
> + "chardev-logfile",
> );
>
>
> @@ -2627,6 +2628,7 @@ static struct virQEMUCapsCommandLineProps virQEMUCapsCommandLine[] = {
> { "machine", "aes-key-wrap", QEMU_CAPS_AES_KEY_WRAP },
> { "machine", "dea-key-wrap", QEMU_CAPS_DEA_KEY_WRAP },
> { "chardev", "append", QEMU_CAPS_CHARDEV_FILE_APPEND },
> + { "chardev", "logfile", QEMU_CAPS_CHARDEV_LOGFILE },
> };
>
> static int
> diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h
> index b73c529..ea2e723 100644
> --- a/src/qemu/qemu_capabilities.h
> +++ b/src/qemu/qemu_capabilities.h
> @@ -344,6 +344,7 @@ typedef enum {
> QEMU_CAPS_VIRTIO_BALLOON_AUTODEFLATE, /* virtio-balloon-{device,pci,ccw}.
> * deflate-on-oom */
> QEMU_CAPS_SCSI_MPTSAS1068, /* -device mptsas1068 */
> + QEMU_CAPS_CHARDEV_LOGFILE, /* -chardev logfile=xxxx */
>
> QEMU_CAPS_LAST /* this must always be the last item */
> } virQEMUCapsFlags;
> diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
> index 78423e7..dee7208 100644
> --- a/src/qemu/qemu_command.c
> +++ b/src/qemu/qemu_command.c
> @@ -3967,6 +3967,19 @@ qemuBuildChrChardevStr(const virDomainChrSourceDef *dev,
> goto error;
> }
>
> + if (dev->logfile) {
> + if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_CHARDEV_LOGFILE)) {
> + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
> + _("logfile not supported in this QEMU binary"));
> + goto error;
> + }
> + virBufferAsprintf(&buf, ",logfile=%s", dev->logfile);
> + if (dev->logappend != VIR_TRISTATE_SWITCH_ABSENT) {
> + virBufferAsprintf(&buf, ",logappend=%s",
> + virTristateSwitchTypeToString(dev->logappend));
> + }
> + }
> +
> if (virBufferCheckError(&buf) < 0)
> goto error;
>
> @@ -3984,6 +3997,12 @@ qemuBuildChrArgStr(const virDomainChrSourceDef *dev,
> {
> virBuffer buf = VIR_BUFFER_INITIALIZER;
>
> + if (dev->logfile) {
> + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
> + _("logfile not supported in this QEMU binary"));
> + goto error;
> + }
> +
> if (prefix)
> virBufferAdd(&buf, prefix, strlen(prefix));
>
> diff --git a/tests/qemuxml2argvdata/qemuxml2argv-serial-file-log.args b/tests/qemuxml2argvdata/qemuxml2argv-serial-file-log.args
> new file mode 100644
> index 0000000..de313e5
> --- /dev/null
> +++ b/tests/qemuxml2argvdata/qemuxml2argv-serial-file-log.args
> @@ -0,0 +1,25 @@
> +LC_ALL=C \
> +PATH=/bin \
> +HOME=/home/test \
> +USER=test \
> +LOGNAME=test \
> +QEMU_AUDIO_DRV=none \
> +/usr/bin/qemu \
> +-name QEMUGuest1 \
> +-S \
> +-M pc \
> +-m 214 \
> +-smp 1 \
> +-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
> +-nographic \
> +-nodefaults \
> +-chardev socket,id=charmonitor,path=/tmp/test-monitor,server,nowait \
> +-mon chardev=charmonitor,id=monitor,mode=readline \
> +-no-acpi \
> +-boot c \
> +-usb \
> +-drive file=/dev/HostVG/QEMUGuest1,format=raw,if=none,id=drive-ide0-0-0 \
> +-device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 \
> +-chardev file,id=charserial0,path=/tmp/serial.log,\
> +logfile=/var/lib/libvirt/qemu/demo-serial.log,logappend=off \
> +-device isa-serial,chardev=charserial0,id=serial0
> diff --git a/tests/qemuxml2argvdata/qemuxml2argv-serial-file-log.xml b/tests/qemuxml2argvdata/qemuxml2argv-serial-file-log.xml
> new file mode 100644
> index 0000000..adb3b78
> --- /dev/null
> +++ b/tests/qemuxml2argvdata/qemuxml2argv-serial-file-log.xml
> @@ -0,0 +1,39 @@
> +<domain type='qemu'>
> + <name>QEMUGuest1</name>
> + <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
> + <memory unit='KiB'>219136</memory>
> + <currentMemory unit='KiB'>219136</currentMemory>
> + <vcpu placement='static'>1</vcpu>
> + <os>
> + <type arch='i686' machine='pc'>hvm</type>
> + <boot dev='hd'/>
> + </os>
> + <clock offset='utc'/>
> + <on_poweroff>destroy</on_poweroff>
> + <on_reboot>restart</on_reboot>
> + <on_crash>destroy</on_crash>
> + <devices>
> + <emulator>/usr/bin/qemu</emulator>
> + <disk type='block' device='disk'>
> + <driver name='qemu' type='raw'/>
> + <source dev='/dev/HostVG/QEMUGuest1'/>
> + <target dev='hda' bus='ide'/>
> + <address type='drive' controller='0' bus='0' target='0' unit='0'/>
> + </disk>
> + <controller type='usb' index='0'/>
> + <controller type='ide' index='0'/>
> + <controller type='pci' index='0' model='pci-root'/>
> + <serial type='file'>
> + <source path='/tmp/serial.log'/>
> + <log file='/var/lib/libvirt/qemu/demo-serial.log' append='off'/>
> + <target port='0'/>
> + </serial>
> + <console type='file'>
> + <source path='/tmp/serial.log'/>
> + <target type='serial' port='0'/>
> + </console>
> + <input type='mouse' bus='ps2'/>
> + <input type='keyboard' bus='ps2'/>
> + <memballoon model='none'/>
> + </devices>
> +</domain>
> diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
> index 854623d..624639e 100644
> --- a/tests/qemuxml2argvtest.c
> +++ b/tests/qemuxml2argvtest.c
> @@ -1026,6 +1026,8 @@ mymain(void)
> DO_TEST("serial-pty", NONE);
> DO_TEST("serial-dev", NONE);
> DO_TEST("serial-file", NONE);
> + DO_TEST("serial-file-log", QEMU_CAPS_CHARDEV, QEMU_CAPS_CHARDEV_FILE_APPEND,
> + QEMU_CAPS_CHARDEV_LOGFILE);
> DO_TEST("serial-unix", NONE);
> DO_TEST("serial-tcp", NONE);
> DO_TEST("serial-udp", NONE);
>
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