December 2011 - Devel - libvirt List Archives

Re: [libvirt] libvirt support on QNX
by Chandrashekhar Jamadarkhani (cjamadar) 14 Dec '11

14 Dec '11

In which dir the source code for libvirt RPC client driver located to port it to QNX ? Is it in libvirt-0.9.8/src/remote ? Thanks, Chandrashekhar Hi Daniel, Thanks Daniel for the info. I was talking only about porting libvirt RPC client driver to QNX for starting/monitoring VMs running on remote RHEL based host. Let me try porting the libvirt RPC client driver to QNX. Thanks, Chandrashekhar -----Original Message----- From: Daniel P. Berrange [mailto:berrange redhat com] Sent: Wednesday, November 16, 2011 4:07 PM To: Chandrashekhar Jamadarkhani (cjamadar) Cc: libvir-list redhat com Subject: Re: [libvirt] libvirt support on QNX On Wed, Nov 16, 2011 at 03:32:19PM +0530, Chandrashekhar Jamadarkhani (cjamadar) wrote: > Hi, > > > > I'm planning to use libvirt in a remote machine which is running on QNX > RTOS. Whether libvirt is ported to QNX, if not any problems in porting > libvirt lib to QNX ? AFAIK, no one has ever said they've tried libvirt on QNX. I presume you are talking about the libvirt RPC client driver only, or are you planning to create some kind of hypervisor driver too ? The libvirt RPC client driver is probably the most portable bit of our code, only depending on a good sockets layer implementation & GNUTLS. So if you pass flags to configure to disable all drivers, except for the remote driver, you should be able to build it without undue trouble. Regards, Daniel

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[libvirt] [test-API][PATCH 1/2] Add support for spice graphics
by Nan Zhang 14 Dec '11

14 Dec '11

* utils/Python/xmlgenerator.py: This extends graphics element for spice XML composing, and support sub-elements settings for audio, images, streaming and so on: <graphics type='spice' autoport='yes'> <image compression='auto_glz'/> <jpeg compression='auto'/> <zlib compression='auto'/> <playback compression='on'/> <streaming mode='filter'/> <clipboard copypaste='no'/> </graphics> * utils/Python/xmlbuilder.py: Add 2 methods add_graphics() and build_graphics() to XmlBuilder class. --- utils/Python/xmlbuilder.py | 36 +++++++++++++++++++++++- utils/Python/xmlgenerator.py | 62 +++++++++++++++++++++++++++++++++++++---- 2 files changed, 91 insertions(+), 7 deletions(-) diff --git a/utils/Python/xmlbuilder.py b/utils/Python/xmlbuilder.py index 5a0f8c8..739eccb 100644 --- a/utils/Python/xmlbuilder.py +++ b/utils/Python/xmlbuilder.py @@ -64,6 +64,13 @@ class XmlBuilder: hostdev_node, domain.getElementsByTagName("console")[0]) return hostdev + def add_graphics(self, params, domain): + graphics = xmlgenerator.graphics_xml(params) + graphics_node = domain.importNode(graphics.childNodes[0], True) + domain.getElementsByTagName("devices")[0].insertBefore( + graphics_node, domain.getElementsByTagName("console")[0]) + return graphics + def build_domain_install(self, params): domain = xmlgenerator.domain_xml(params, True) self.add_disk(params, domain) @@ -151,6 +158,12 @@ class XmlBuilder: self.write_toxml(hostdev) return hostdev.toxml() + def build_graphics(self, params): + graphics = xmlgenerator.graphics_xml(params) + if __DEBUG__: + self.write_toxml(graphics) + return graphics.toxml() + def build_pool(self, params): pool = xmlgenerator.pool_xml(params) if __DEBUG__: @@ -242,6 +255,20 @@ if __name__ == "__main__": interfacexml = xmlobj.build_interface(params) + #-------------------------- + # get graphics xml string + #-------------------------- + print '=' * 30, 'graphics xml', '=' * 30 + params['graphtype'] = 'spice' + params['image'] = 'auto_glz' + params['jpeg'] = 'auto' + params['zlib'] = 'auto' + params['playback'] = 'on' + params['streaming'] = 'filter' + params['clipboard'] = 'no' + + graphicsxml = xmlobj.build_graphics(params) + #--------------------- # get pool xml string #--------------------- @@ -297,6 +324,13 @@ if __name__ == "__main__": params['memory'] = '1048576' params['vcpu'] = '2' params['inputbus'] = 'usb' + params['graphtype'] = 'spice' + params['image'] = 'auto_glz' + params['jpeg'] = 'auto' + params['zlib'] = 'auto' + params['playback'] = 'on' + params['streaming'] = 'filter' + params['clipboard'] = 'no' params['sound'] = 'ac97' params['bootcd'] = '/iso/rhel5.iso' @@ -367,7 +401,7 @@ if __name__ == "__main__": #---------------------------------------- # get domain snapshot xml string #---------------------------------------- - params['name'] = 'hello' + params['snapshotname'] = 'hello' params['description'] = 'hello snapshot' snapshot_xml = xmlobj.build_domain_snapshot(params) diff --git a/utils/Python/xmlgenerator.py b/utils/Python/xmlgenerator.py index d57dd33..460f2e5 100644 --- a/utils/Python/xmlgenerator.py +++ b/utils/Python/xmlgenerator.py @@ -233,12 +233,6 @@ def domain_xml(params, install = False): input_element.setAttribute('bus', 'ps2') devices_element.appendChild(input_element) - # <graphics> - graphics_element = domain.createElement('graphics') - graphics_element.setAttribute('type', 'vnc') - graphics_element.setAttribute('port', '-1') - graphics_element.setAttribute('keymap', 'en-us') - devices_element.appendChild(graphics_element) domain_element.appendChild(devices_element) # <sound> @@ -253,6 +247,62 @@ def domain_xml(params, install = False): return domain +def graphics_xml(params): + graphics = xml.dom.minidom.Document() + # <graphics> + graphics_element = graphics.createElement('graphics') + if not params.has_key('graphtype'): + params['graphtype'] == 'vnc' + + graphics_element.setAttribute('type', params['graphtype']) + graphics.appendChild(graphics_element) + + if params['graphtype'] == 'vnc': + graphics_element.setAttribute('port', '-1') + graphics_element.setAttribute('keymap', 'en-us') + elif params['graphtype'] == 'spice': + graphics_element.setAttribute('autoport', 'yes') + if params.has_key('image'): + image_element = graphics.createElement('image') + # image to set image compression (accepts + # auto_glz, auto_lz, quic, glz, lz, off) + image_element.setAttribute('compression', params['image']) + graphics_element.appendChild(image_element) + if params.has_key('jpeg'): + jpeg_element = graphics.createElement('jpeg') + # jpeg for JPEG compression for images over wan (accepts + # auto, never, always) + jpeg_element.setAttribute('compression', params['jpeg']) + graphics_element.appendChild(jpeg_element) + if params.has_key('zlib'): + zlib_element = graphics.createElement('zlib') + # zlib for configuring wan image compression (accepts + # auto, never, always) + zlib_element.setAttribute('compression', params['zlib']) + graphics_element.appendChild(zlib_element) + if params.has_key('playback'): + playback_element = graphics.createElement('playback') + # playback for enabling audio stream compression (accepts on or off) + playback_element.setAttribute('compression', params['playback']) + graphics_element.appendChild(playback_element) + if params.has_key('streaming'): + streaming_element = graphics.createElement('streaming') + # streamming for settings it's mode attribute to one of + # filter, all or off + streaming_element.setAttribute('mode', params['streaming']) + graphics_element.appendChild(streaming_element) + if params.has_key('clipboard'): + clipboard_element = graphics.createElement('clipboard') + # Copy & Paste functionality is enabled by default, and can + # be disabled by setting the copypaste property to no + clipboard_element.setAttribute('copypaste', params['clipboard']) + graphics_element.appendChild(clipboard_element) + else: + print 'Wrong graphics type was specified.' + sys.exit(1) + + return graphics + def disk_xml(params, cdrom = False): disk = xml.dom.minidom.Document() # <disk> -- START -- 1.7.4.4

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[libvirt] [test-API][PATCH] Add test case set_cpu_shares.py for setting cpu scheduler info
by Nan Zhang 14 Dec '11

14 Dec '11

* repos/domain/set_cpu_shares.py: set the value of cpu_shares property of the guest. --- repos/domain/set_cpu_shares.py | 111 ++++++++++++++++++++++++++++++++++++++++ 1 files changed, 111 insertions(+), 0 deletions(-) create mode 100644 repos/domain/set_cpu_shares.py diff --git a/repos/domain/set_cpu_shares.py b/repos/domain/set_cpu_shares.py new file mode 100644 index 0000000..4560809 --- /dev/null +++ b/repos/domain/set_cpu_shares.py @@ -0,0 +1,111 @@ +#!/usr/bin/env python +"""Set the value of cpu_shares property of the guest + domain:set_cpu_shares + guestname + xxx + flags + 0|1|2 +""" + +__author__ = 'Nan Zhang: nzhang(a)redhat.com' +__date__ = 'Tue Sep 27, 2011' +__version__ = '0.1.0' +__credits__ = 'Copyright (C) 2011 Red Hat, Inc.' +__all__ = ['check_params', 'check_cpu_shares', 'set_cpu_shares'] + +import os +import re +import sys +import time +from xml.dom import minidom + + +def append_path(path): + """Append root path of package""" + if path in sys.path: + pass + else: + sys.path.append(path) + +pwd = os.getcwd() +result = re.search('(.*)libvirt-test-API', pwd) +append_path(result.group(0)) + +from lib import connectAPI +from lib import domainAPI +from utils.Python import utils +from utils.Python import xmlbuilder +from exception import LibvirtAPI + +def check_params(params): + """Verify inputing parameter dictionary""" + logger = params['logger'] + keys = ['guestname', 'flags'] + for key in keys: + if key not in params: + logger.error("%s is required" %key) + return 1 + return 0 + +def check_cpu_shares(params, util, guestname, cpu_shares): + """Check the value of cpu_shares""" + logger = params['logger'] + cmd = "cat /cgroup/cpu/libvirt/qemu/%s/cpu.shares" % guestname + ret, out = util.exec_cmd(cmd, shell=True) + if ret: + logger.error("fail to set the value of cpu_shares: %s" % out[0]) + return 0 + else: + logger.info("from cgroup, the value of cpu_shares is %s" % out[0]) + + if cmp(int(out[0]), cpu_shares): + return 1 + else: + logger.info("the value of cpu_shares does match the original \ +cpu scheduler information.") + return 0 + +def set_cpu_shares(params): + """Get the cpu scheduler information""" + # Initiate and check parameters + params_check_result = check_params(params) + if params_check_result: + return 1 + logger = params['logger'] + guestname = params['guestname'] + flags = params['flags'] + schedinfo = {} + schedinfo['cpu_shares'] = 2048 + cpu_shares = schedinfo['cpu_shares'] + + # Connect to local hypervisor connection URI + util = utils.Utils() + uri = util.get_uri('127.0.0.1') + conn = connectAPI.ConnectAPI() + virconn = conn.open(uri) + + caps = conn.get_caps() + logger.debug(caps) + + domobj = domainAPI.DomainAPI(virconn) + try: + domobj.set_sched_params_flags(guestname, schedinfo, int(flags)) + logger.debug("set the value of cpu_shares with %s" % cpu_shares) + except LibvirtAPI, e: + logger.error("API error message: %s, error code is %s" % + (e.response()['message'], e.response()['code'])) + return 1 + + check_result = check_cpu_shares(params, util, guestname, cpu_shares) + if check_result: + logger.error("cpu_shares does not match.") + conn.close() + return 1 + + logger.info("success to set scheduler parameters.") + conn.close() + return 0 + +def set_cpu_shares_clean(): + """Clean testing environment""" + pass -- 1.7.4.4

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Re: [libvirt] macvtap not working on kvm
by Amit Tewari 14 Dec '11

14 Dec '11

Hi all, In same previous scenario of macvtap ,Im not able to assign dhcp address to guest interface, and if I assign static ip of my lan to guest interface , than also it is not able to connect to the network.. ________________________________ From: libvir-list-bounces(a)redhat.com [mailto:libvir-list-bounces@redhat.com] On Behalf Of Amit Tewari Sent: Tuesday, December 13, 2011 5:11 PM To: xhu Cc: libvir-list(a)redhat.com Subject: Re: [libvirt] macvtap not working on kvm Hi, Actually udev renames the eth0 interface in guest to eth1 because macvtap0 has different mac address then eth0 on host.. Is there some way so that we can prevent changing this rename of eth0 to eth1 on guest. I don't want to change udev files. ________________________________ From: xhu [mailto:xhu@redhat.com] Sent: Tuesday, December 13, 2011 3:01 PM To: Amit Tewari Cc: libvir-list(a)redhat.com Subject: Re: [libvirt] macvtap not working on kvm On 12/13/2011 12:59 PM, Amit Tewari wrote: Hi all, My test environment Host os=rhel6.1 Guest os = rhel6.1 Libvirt=0.9.8 Kvm hypervisor I have made this entry in guest xml file <interface type='direct'> <source dev='eth0' mode='bridge'/> <model type='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> Now when I start the guest #virsh start guest Following macvtap0 is created on host and is shown below #ip link show macvtap0 51: macvtap0@eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UNKNOWN qlen 500 link/ether 52:54:00:55:AE:B5brd ff:ff:ff:ff:ff:ff but when the guest is up and I try to perform # ifup eth0 It gives following message "Bringing up interface eth0: Device eth0 does not seem to be present, delaying initialization. [FAILED]" The interface name may change to ethN(N may be 1 or 2 ...) due to the change of guest interface mac address. You can log in guest and use command: "ip link show" to get the value of N. Then create ifcfg-ethN for it and use "ifup ethN" to start it in guest. Guest eth interface does not create. What is the problem? When I checked dmesg on host it gives following message-"macvatp0: ipv6 routers not present" Please let me know how macvtap work on kvm. DISCLAIMER: ------------------------------------------------------------------------ ----------------------------------------------- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or NECHCL or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of NECHCL or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. . ------------------------------------------------------------------------ ----------------------------------------------- -- libvir-list mailing list libvir-list(a)redhat.com https://www.redhat.com/mailman/listinfo/libvir-list DISCLAIMER: ------------------------------------------------------------------------ ----------------------------------------------- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or NECHCL or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of NECHCL or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. . ------------------------------------------------------------------------ ----------------------------------------------- DISCLAIMER: ----------------------------------------------------------------------------------------------------------------------- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or NECHCL or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of NECHCL or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. . -----------------------------------------------------------------------------------------------------------------------

1 0

[libvirt] [PATCH] python: Expose memoryPeek to Python binding
by Osier Yang 14 Dec '11

14 Dec '11

--- python/libvirt-override-api.xml | 8 ++++++++ python/libvirt-override.c | 33 +++++++++++++++++++++++++++++++++ 2 files changed, 41 insertions(+), 0 deletions(-) diff --git a/python/libvirt-override-api.xml b/python/libvirt-override-api.xml index 87db67b..2e0c7cb 100644 --- a/python/libvirt-override-api.xml +++ b/python/libvirt-override-api.xml @@ -414,5 +414,13 @@ <arg name='flags' type='unsigned int' info='unused, always passed 0'/> <return type='char *' info='the returned buffer or None in case of error'/> </function> + <function name='virDomainMemoryPeek' file='python'> + <info>Read the contents of domain's memory</info> + <arg name='dom' type='virDomainPtr' info='pointer to the domain'/> + <arg name='start' type='unsigned long long' info='start of memory to peek'/> + <arg name='size' type='size_t' info='size of memory to peek'/> + <arg name='flags' type='unsigned int' info='an OR'ed set of virDomainMemoryFlags'/> + <return type='char *' info='the returned buffer or None in case of error'/> + </function> </symbols> </api> diff --git a/python/libvirt-override.c b/python/libvirt-override.c index 4839e08..032cc47 100644 --- a/python/libvirt-override.c +++ b/python/libvirt-override.c @@ -5051,6 +5051,38 @@ libvirt_virDomainBlockPeek(PyObject *self ATTRIBUTE_UNUSED, return py_retval; } +static PyObject * +libvirt_virDomainMemoryPeek(PyObject *self ATTRIBUTE_UNUSED, + PyObject *args) { + PyObject *py_retval; + int c_retval; + virDomainPtr domain; + PyObject *pyobj_domain; + unsigned long long start; + size_t size; + char *buf; + unsigned int flags; + + if (!PyArg_ParseTuple(args, (char *)"OLni:virDomainMemoryPeek", &pyobj_domain, + &start, &size, &flags)) + return(NULL); + + domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain); + + if ((buf = malloc(size)) == NULL) + return VIR_PY_NONE; + + LIBVIRT_BEGIN_ALLOW_THREADS; + c_retval = virDomainMemoryPeek(domain, start, size, buf, flags); + LIBVIRT_END_ALLOW_THREADS; + + if (c_retval < 0) + return VIR_PY_NONE; + + py_retval = libvirt_charPtrWrap(buf); + return py_retval; +} + /************************************************************************ * * * The registration stuff * @@ -5147,6 +5179,7 @@ static PyMethodDef libvirtMethods[] = { {(char *) "virDomainSendKey", libvirt_virDomainSendKey, METH_VARARGS, NULL}, {(char *) "virDomainMigrateGetMaxSpeed", libvirt_virDomainMigrateGetMaxSpeed, METH_VARARGS, NULL}, {(char *) "virDomainBlockPeek", libvirt_virDomainBlockPeek, METH_VARARGS, NULL}, + {(char *) "virDomainMemoryPeek", libvirt_virDomainMemoryPeek, METH_VARARGS, NULL}, {NULL, NULL, 0, NULL} }; -- 1.7.1

2 2

[libvirt] [PATCH 0/2] virsh: allow to specify pci address with attach-interface
by KAMEZAWA Hiroyuki 14 Dec '11

14 Dec '11

Now, at using attach-interface, pci address of the device is determined automatically. This is nice. But in some situation, users may want to specify pci address by hand. For example, when users want to use multifunction pci device, he need to specify pci slot. This patch allows to specify pci address with attach-interface. Then, this kind of script can run to assign multiple nics in a slot. == #!/bin/bash -x DOM=$1 SLOT=$2 NUM=$3 for i in `seq 0 $NUM`; do virsh attach-interface --domain $DOM --type='network' --source=default\ --persistent --model=virtio --address=pci:0000:00:$SLOT:0$i --multifunction; done == Because I moved placement of some functions in virsh.c, diffstat seems big... virsh.c | 948 ++++++++++++++++++++++++++++++++------------------------------ virsh.pod | 4 2 files changed, 495 insertions(+), 457 deletions(-) Thanks, -Kame

1 2

[libvirt] [PATCH] virsh: support multifunction in attach-disk
by KAMEZAWA Hiroyuki 14 Dec '11

14 Dec '11

From: KAMEZAWA Hiroyuki <kamezawa.hiroyu(a)jp.fujitsu.com> PCI <address...> can be specified by attach-disk but multifunction cannot be specified. add --multifunction support. --- tools/virsh.c | 7 ++++++- tools/virsh.pod | 3 ++- 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/tools/virsh.c b/tools/virsh.c index d58b827..346b440 100644 --- a/tools/virsh.c +++ b/tools/virsh.c @@ -12661,6 +12661,7 @@ static const vshCmdOptDef opts_attach_disk[] = { {"serial", VSH_OT_STRING, 0, N_("serial of disk device")}, {"shareable", VSH_OT_BOOL, 0, N_("shareable between domains")}, {"address", VSH_OT_STRING, 0, N_("address of disk device")}, + {"multifunction", VSH_OT_BOOL, 0, N_("use multifunction pci under specified address")}, {NULL, 0, 0, NULL} }; @@ -12916,9 +12917,13 @@ cmdAttachDisk(vshControl *ctl, const vshCmd *cmd) if (diskAddr.type == DISK_ADDR_TYPE_PCI) { virBufferAsprintf(&buf, " <address type='pci' domain='0x%04x'" - " bus ='0x%02x' slot='0x%02x' function='0x%0x' />\n", + " bus ='0x%02x' slot='0x%02x' function='0x%0x'", diskAddr.addr.pci.domain, diskAddr.addr.pci.bus, diskAddr.addr.pci.slot, diskAddr.addr.pci.function); + if (vshCommandOptBool(cmd, "multifunction")) + virBufferAsprintf(&buf, " multifunction='on' />\n"); + else + virBufferAsprintf(&buf, " />\n"); } else { vshError(ctl, "%s", _("expecting a pci:0000.00.00.00 address.")); goto cleanup; diff --git a/tools/virsh.pod b/tools/virsh.pod index fe92714..1a778f9 100644 --- a/tools/virsh.pod +++ b/tools/virsh.pod @@ -1273,7 +1273,7 @@ the device does not use managed mode. =item B<attach-disk> I<domain-id> I<source> I<target> [I<--driver driver>] [I<--subdriver subdriver>] [I<--cache cache>] [I<--type type>] [I<--mode mode>] [I<--persistent>] [I<--sourcetype soucetype>] -[I<--serial serial>] [I<--shareable>] [I<--address address>] +[I<--serial serial>] [I<--shareable>] [I<--address address>] [I<--multifunction>] Attach a new disk device to the domain. I<source> and I<target> are paths for the files and devices. @@ -1291,6 +1291,7 @@ I<serial> is the serial of disk device. I<shareable> indicates the disk device is shareable between domains. I<address> is the address of disk device in the form of pci:domain.bus.slot.function, scsi:controller.bus.unit or ide:controller.bus.unit. +I<multifunction> indicates specified pci address is a multifunction pci device address. =item B<attach-interface> I<domain-id> I<type> I<source> [I<--target target>] [I<--mac mac>] [I<--script script>] [I<--model model>] -- 1.7.4.1

3 5

[libvirt] [PATCH v3] virsh: Add option to undefine storage with domains
by Peter Krempa 14 Dec '11

14 Dec '11

Add an option for virsh undefine command, to remove associated storage volumes while undefining a domain. This patch alows the user to remove associated (libvirt managed ) storage volumes while undefining a domain. The new option --storage for the undefine command takes a string argument that consists of comma separated list of target or source path of volumes to be undefined. Volumes are removed after the domain has been successfuly undefined, If a volume is not part of a storage pool, the user is warned to remove the volume in question himself. Option --wipe-storage may be specified along with this, that ensures the image is wiped before removing. Option --remove-all-storage enables the user to remove all storage. The name is chosen long as the users shoudl be aware what they're about to do. --- Changes to v2 based on reveiw by Eric: ( http://www.redhat.com/archives/libvir-list/2011-September/msg00481.html ) - First undefine the domain, then undefine volumes - Add option to remove all volumes - Fix typos and strange wordings - Change retur value to failure if some operations on volumes fail. tools/virsh.c | 143 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ tools/virsh.pod | 18 +++++++ 2 files changed, 161 insertions(+), 0 deletions(-) diff --git a/tools/virsh.c b/tools/virsh.c index d58b827..281ffa9 100644 --- a/tools/virsh.c +++ b/tools/virsh.c @@ -1924,6 +1924,13 @@ static const vshCmdInfo info_undefine[] = { static const vshCmdOptDef opts_undefine[] = { {"domain", VSH_OT_DATA, VSH_OFLAG_REQ, N_("domain name or uuid")}, {"managed-save", VSH_OT_BOOL, 0, N_("remove domain managed state file")}, + {"storage", VSH_OT_DATA, VSH_OFLAG_NONE, + N_("remove associated storage volumes (comma separated list of targets " + "or source paths) (see domblklist)")}, + {"remove-all-storage", VSH_OT_BOOL, 0, + N_("remove all associated storage volumes (use with caution)")}, + {"wipe-storage", VSH_OT_BOOL, VSH_OFLAG_NONE, + N_("wipe data on the removed volumes")}, {"snapshots-metadata", VSH_OT_BOOL, 0, N_("remove all domain snapshot metadata, if inactive")}, {NULL, 0, 0, NULL} @@ -1940,6 +1947,9 @@ cmdUndefine(vshControl *ctl, const vshCmd *cmd) /* User-requested actions. */ bool managed_save = vshCommandOptBool(cmd, "managed-save"); bool snapshots_metadata = vshCommandOptBool(cmd, "snapshots-metadata"); + bool wipe_storage = vshCommandOptBool(cmd, "wipe-storage"); + bool remove_storage = false; + bool remove_all_storage = vshCommandOptBool(cmd, "remove-all-storage"); /* Positive if these items exist. */ int has_managed_save = 0; int has_snapshots_metadata = 0; @@ -1949,6 +1959,22 @@ cmdUndefine(vshControl *ctl, const vshCmd *cmd) bool snapshots_safe = false; int rc = -1; int running; + /* list of volumes to remove along with this domain */ + char *volumes = NULL; + const char *volume; + char *saveptr = NULL; + char *def = NULL; + char *source = NULL; + char *target = NULL; + int i; + + xmlNodePtr *vol_nodes = NULL; + int nvolumes = 0; + xmlXPathContextPtr ctxt = NULL; + xmlDocPtr doc = NULL; + virStorageVolPtr vol = NULL; + bool vol_del_failed = false; + if (managed_save) { flags |= VIR_DOMAIN_UNDEFINE_MANAGED_SAVE; @@ -1965,6 +1991,18 @@ cmdUndefine(vshControl *ctl, const vshCmd *cmd) if (!(dom = vshCommandOptDomain(ctl, cmd, &name))) return false; + /* check if a string that should contain list of volumes to remove is present */ + if (vshCommandOptString(cmd, "storage", (const char **)&volumes) > 0) { + /* caution volumes has to be re-assigned as it would be doulbe freed */ + volumes = vshStrdup(ctl, volumes); + + if (remove_all_storage) { + vshError(ctl, _("Specified both --storage and --remove-all-storage")); + goto cleanup; + } + remove_storage = true; + } + /* Do some flag manipulation. The goal here is to disable bits * from flags to reduce the likelihood of a server rejecting * unknown flag bits, as well as to track conditions which are @@ -2027,6 +2065,20 @@ cmdUndefine(vshControl *ctl, const vshCmd *cmd) snapshots_safe = true; } + /* Stash domain description for later use */ + if (remove_storage || remove_all_storage) { + if (running) { + vshError(ctl, _("Storage volume deletion is supported only on stopped domains")); + goto cleanup; + } + + if (!(def = virDomainGetXMLDesc(dom, 0))) { + vshError(ctl, _("Could not retrieve domain XML description")); + goto cleanup; + } + } + + /* Generally we want to try the new API first. However, while * virDomainUndefineFlags was introduced at the same time as * VIR_DOMAIN_UNDEFINE_MANAGED_SAVE in 0.9.4, the @@ -2076,9 +2128,100 @@ out: ret = true; } else { vshError(ctl, _("Failed to undefine domain %s"), name); + goto cleanup; + } + + /* try to undefine storage volumes associated with this domain, if it's requested */ + if (remove_storage || remove_all_storage) { + ret = false; + doc = virXMLParseStringCtxt(def, _("(domain_definition)"), &ctxt); + if (!doc) + goto cleanup; + + nvolumes = virXPathNodeSet("./devices/disk", ctxt, &vol_nodes); + + if (nvolumes < 0) + goto cleanup; + + for (i = 0; i < nvolumes; i++) { + ctxt->node = vol_nodes[i]; + VIR_FREE(target); + VIR_FREE(source); + if (vol) { + virStorageVolFree(vol); + vol = NULL; + } + + /* get volume source and target paths */ + if (!(target = virXPathString("string(./target/@dev)", ctxt))) { + vshError(ctl, _("Failed to enumerate devices")); + goto cleanup; + } + + if (!(source = virXPathString("string(" + "./source/@file|" + "./source/@dir|" + "./source/@name|" + "./source/@dev)", ctxt)) && + virGetLastError()) + goto cleanup; + + if (volumes) { + volume = strtok_r(volumes, ",", &saveptr); + while (volume) { + if (STREQ_NULLABLE(volume, target) || + STREQ_NULLABLE(volume, source)) + break; + volume = strtok_r(NULL, ",", &saveptr); + } + if (!volume) + continue; + } + + if (!source) + continue; + + if (!(vol = virStorageVolLookupByPath(ctl->conn, source))) { + vshPrint(ctl, + _("Storage volume '%s' is not managed by libvirt. " + "Remove it manually.\n"), source); + virResetLastError(); + continue; + } + + if (wipe_storage) { + vshPrint(ctl, _("Wiping volume '%s' ... "), source); + fflush(stdout); + if (virStorageVolWipe(vol, 0) < 0) { + vshError(ctl, _("Failed! Volume not removed.")); + vol_del_failed = true; + continue; + } else { + vshPrint(ctl, _("Done.\n")); + } + } + + /* delete the volume */ + if (virStorageVolDelete(vol, 0) < 0) { + vshError(ctl, _("Failed to remove storage volume '%s'"), + source); + vol_del_failed = true; + } + vshPrint(ctl, _("Volume '%s' removed.\n"), source); + } + + if (!vol_del_failed) + ret = true; } cleanup: + VIR_FREE(source); + VIR_FREE(target); + VIR_FREE(volumes); + VIR_FREE(def); + VIR_FREE(vol_nodes); + xmlFreeDoc(doc); + xmlXPathFreeContext(ctxt); virDomainFree(dom); return ret; } diff --git a/tools/virsh.pod b/tools/virsh.pod index fe92714..c0b55bd 100644 --- a/tools/virsh.pod +++ b/tools/virsh.pod @@ -1179,6 +1179,7 @@ Output the device used for the TTY console of the domain. If the information is not available the processes will provide an exit code of 1. =item B<undefine> I<domain-id> [I<--managed-save>] [I<--snapshots-metadata>] +[I<--storage> B<volumes> I<--wipe-storage> I<--remove-all-storage>] Undefine a domain. If the domain is running, this converts it to a transient domain, without stopping it. If the domain is inactive, @@ -1194,6 +1195,23 @@ domain. Without the flag, attempts to undefine an inactive domain with snapshot metadata will fail. If the domain is active, this flag is ignored. +The I<--storage> flag takes a parameter B<volumes>, that is a comma separated +list of volume target names or source paths of storage volumes to be removed +along with the undefined domain. Volumes can be undefined and thus removed only +on inactive domains. Volume deletion is only attempted after the domain is +undefined; if not all of the requested volumes could be deleted, the the +error message indicates what still remains behind. If a volume path is not +found in the domain definition, it's treated as if the volume was successfuly +deleteted. +(See B<domblklist> for list of target names associated to a domain). +Example: --storage vda,vdb,vdc + +The I<--remove-all-storage> flag specifies, that all domain's storage volumes +should be deleted. + +The flag I<--wipe-storage> specifies that the storage volumes should be +wiped before removal. + NOTE: For an inactive domain, the domain name or UUID must be used as the I<domain-id>. -- 1.7.3.4

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[libvirt] [PATCH] virsh: Print error message if argument parsing fails for cmdNodesuspend
by Peter Krempa 14 Dec '11

14 Dec '11

If parsing of arguments failed, virsh did silently exit returning and error state, but not specifying the possible problem. * tools/virsh: cmdNodesuspend: - error handling added --- tools/virsh.c | 12 +++++++++--- 1 files changed, 9 insertions(+), 3 deletions(-) diff --git a/tools/virsh.c b/tools/virsh.c index d58b827..ebda248 100644 --- a/tools/virsh.c +++ b/tools/virsh.c @@ -5270,14 +5270,20 @@ cmdNodeSuspend(vshControl *ctl, const vshCmd *cmd) if (!vshConnectionUsability(ctl, ctl->conn)) return false; - if (vshCommandOptString(cmd, "target", &target) < 0) + if (vshCommandOptString(cmd, "target", &target) < 0) { + vshError(ctl, _("Invalid suspend target argument")); return false; + } - if (vshCommandOptLongLong(cmd, "duration", &duration) < 0) + if (vshCommandOptLongLong(cmd, "duration", &duration) < 0) { + vshError(ctl, _("Invalid suspend duration argument")); return false; + } - if (vshCommandOptUInt(cmd, "flags", &flags) < 0) + if (vshCommandOptUInt(cmd, "flags", &flags) < 0) { + vshError(ctl, _("Invalid suspend flags argument")); return false; + } if (STREQ(target, "mem")) suspendTarget = VIR_NODE_SUSPEND_TARGET_MEM; -- 1.7.3.4

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[libvirt] [PATCH] docs: tweak 'virsh edit' wording
by Eric Blake 14 Dec '11

14 Dec '11

I was wondering why 'virsh edit' didn't support the same '--inactive' option as 'virsh dumpxml'; reading the source code showed that --inactive was already implied, and that the only way to alter a running guest rather than affecting next boot is by hot-plugging individual devices, or by something complex like saving the guest and modifying the save image. * tools/virsh.pod (define, edit): Mention behavior when guest is already running. --- tools/virsh.pod | 8 +++++--- 1 files changed, 5 insertions(+), 3 deletions(-) diff --git a/tools/virsh.pod b/tools/virsh.pod index fe92714..965b215 100644 --- a/tools/virsh.pod +++ b/tools/virsh.pod @@ -497,7 +497,8 @@ B<Example> =item B<define> I<FILE> Define a domain from an XML <file>. The domain definition is registered -but not started. +but not started. If domain is already running, the changes will take +effect on the next boot. =item B<destroy> I<domain-id> @@ -717,11 +718,12 @@ specified, then the output will be escaped for use in XML. =item B<edit> I<domain-id> -Edit the XML configuration file for a domain. +Edit the XML configuration file for a domain, which will affect the +next boot of the guest. This is equivalent to: - virsh dumpxml domain > domain.xml + virsh dumpxml --inactive domain > domain.xml vi domain.xml (or make changes with your other text editor) virsh define domain.xml -- 1.7.7.4

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