October 2010 - Devel - libvirt List Archives

Re: [libvirt] Node.GetInfo error
by arnaud.champion＠devatom.fr 01 Nov '10

01 Nov '10

?Ok, at first GetLastError return an Error object. So you should anything like : Errors.Error err = Errors.GetLastError(); MessageBox.Show(err.Message); For the NodeInfo structure, I think the problem is the same that was for DomainInfo, I'll check marshaling. Then respond you with the correct infos. Arnaud PS : can you also put libvirt-list(a)redhat.com in copy of your mails, to keep everyone in the loop ? From: 黄亮 Sent: Sunday, October 31, 2010 8:20 AM To: arnaud.champion Subject: Node.GetInfo error Hi, Sorry for disturbing again. But I get error while using Node.GetInfo. Code: NodeInfo aNodeInfo = new NodeInfo(); if (Node.GetInfo(con, aNodeInfo) < 0) { //MessageBox.Show("Node Info Error"); MessageBox.Show(Errors.GetLastError().ToString()); return 0f; } I'm sure con != IntPtr.Zero. I tried to use Errors.GetLastError(), it returns int. But I don't know what to do with it. So, any suggestions ? Thanks Regards 2010-10-31 -------------------------------------------------------------------------------- Lancer

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[libvirt] ESXi 4.1 Driver
by Sherif Nagy 31 Oct '10

31 Oct '10

Dear All, Any idea what release of Libvirt has or will have the support for ESXi 4.1 driver? Thank You, Regards, Sherif

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Re: [libvirt] SPAM-LOW: Domain.GetInfo error
by arnaud.champion＠devatom.fr 31 Oct '10

31 Oct '10

?Hi, In fact, when you compile libvirt with mingwin/msys, the binaries are compiled in 32 bits, even it runs on a 64 bits system. Accordingly, C# bindings must be targeted as x86 (32 bits) when compiling them. This isn't a problem for a 64 bits application which use bindings, .Net make the trick to make it works. I haven't made any test with xen (I haven't xen) but if your sample works, it means libvirt is compiled with xen support. Happy halloween to you also. Arnaud From: 黄亮 Sent: Sunday, October 31, 2010 6:52 AM To: arnaud.champion(a)devatom.fr Subject: Re: Re: SPAM-LOW: Domain.GetInfo error Hi, Thanks for your reply. It works with the patch you provide in last letter. But I don't understand "x86 target" you mentioned, does it mean if I want to make the code run, the server which runs xend & libvirtd must be a x86 arch, not a x64 arch? As to the question "are you sure also that libvirt dll is compiled with xen support ?" I just follow the instructions on http://github.com/photron/msys_setup, without the ESX support, I think it should support Xen, though it isn't write in explicit. Anyway, at least it's working. Thanks for your reply. Regards and Best wishes, and Happy Halloween XD 2010-10-31 -------------------------------------------------------------------------------- Lancer -------------------------------------------------------------------------------- 发件人： arnaud.champion(a)devatom.fr 发送时间： 2010-10-31 01:21:52 收件人：黄亮抄送： libvir-list(a)redhat.com 主题： Re: SPAM-LOW: Domain.GetInfo error Hi, So, at first, are you sure that conn != IntPtr.Zero and pDomain != IntPtr.Zero. if both pointer are ok, can you please check the DomainInfo marshal, I have just sended patch today around this structure, and I think the patch is not yet pushed to the git. The DomainInfo structure must be marshaled in this way : /// <summary> /// Structure to handle domain informations /// </summary> [StructLayout(LayoutKind.Sequential)] public class DomainInfo { /// <summary> /// The running state, one of virDomainState. /// </summary> private byte state; /// <summary> /// The maximum memory in KBytes allowed. /// </summary> [MarshalAs(UnmanagedType.SysUInt)] public UIntPtr maxMem; /// <summary> /// The memory in KBytes used by the domain. /// </summary> [MarshalAs(UnmanagedType.SysUInt)] public UIntPtr memory; /// <summary> /// The number of virtual CPUs for the domain. /// </summary> public ushort nrVirtCpu; /// <summary> /// The CPU time used in nanoseconds. /// </summary> [MarshalAs(UnmanagedType.SysUInt)] public UIntPtr cpuTime; /// <summary> /// The running state, one of virDomainState. /// </summary> public DomainState State { get { return (DomainState)state; } } } Also, another important thing change : the libvirt bindings project must have an x86 target to make this marshaling working. This is also in the patch. Another thing, you can also use Errors.GetLastErro() method to identify the problem, it return an error class which can inform you about the problem. Best regards, Arnaud PS : are you sure also that libvirt dll is compiled with xen support ? From: 黄亮 Sent: Saturday, October 30, 2010 7:07 PM To: arnaud.champion Subject: SPAM-LOW: Domain.GetInfo error Dear Arnaud Here is my test code. Function Domain.GetInfo return -1 and I don't know where is the mistake. Would you do me a favor to point out the problem? Thank you! Code: IntPtr conn = Connect.Open("xen+tcp://192.168.0.1?no_verify=1"); String DomainName = e.Node.Text; IntPtr pDomain = Domain.LookupByName(conn, DomainName); DomainInfo aInfo = new DomainInfo(); if (Domain.GetInfo(pDomain, aInfo) == -1) { MessageBox.Show("Get Info error"); return; } 2010-10-31 -------------------------------------------------------------------------------- 黄亮 __________ Information from ESET Smart Security, version of virus signature database 5576 (20101029) __________ The message was checked by ESET Smart Security. http://www.eset.com

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Re: [libvirt] SPAM-LOW: Domain.GetInfo error
by arnaud.champion＠devatom.fr 30 Oct '10

30 Oct '10

?Hi, So, at first, are you sure that conn != IntPtr.Zero and pDomain != IntPtr.Zero. if both pointer are ok, can you please check the DomainInfo marshal, I have just sended patch today around this structure, and I think the patch is not yet pushed to the git. The DomainInfo structure must be marshaled in this way : /// <summary> /// Structure to handle domain informations /// </summary> [StructLayout(LayoutKind.Sequential)] public class DomainInfo { /// <summary> /// The running state, one of virDomainState. /// </summary> private byte state; /// <summary> /// The maximum memory in KBytes allowed. /// </summary> [MarshalAs(UnmanagedType.SysUInt)] public UIntPtr maxMem; /// <summary> /// The memory in KBytes used by the domain. /// </summary> [MarshalAs(UnmanagedType.SysUInt)] public UIntPtr memory; /// <summary> /// The number of virtual CPUs for the domain. /// </summary> public ushort nrVirtCpu; /// <summary> /// The CPU time used in nanoseconds. /// </summary> [MarshalAs(UnmanagedType.SysUInt)] public UIntPtr cpuTime; /// <summary> /// The running state, one of virDomainState. /// </summary> public DomainState State { get { return (DomainState)state; } } } Also, another important thing change : the libvirt bindings project must have an x86 target to make this marshaling working. This is also in the patch. Another thing, you can also use Errors.GetLastErro() method to identify the problem, it return an error class which can inform you about the problem. Best regards, Arnaud PS : are you sure also that libvirt dll is compiled with xen support ? From: 黄亮 Sent: Saturday, October 30, 2010 7:07 PM To: arnaud.champion Subject: SPAM-LOW: Domain.GetInfo error Dear Arnaud Here is my test code. Function Domain.GetInfo return -1 and I don't know where is the mistake. Would you do me a favor to point out the problem? Thank you! Code: IntPtr conn = Connect.Open("xen+tcp://192.168.0.1?no_verify=1"); String DomainName = e.Node.Text; IntPtr pDomain = Domain.LookupByName(conn, DomainName); DomainInfo aInfo = new DomainInfo(); if (Domain.GetInfo(pDomain, aInfo) == -1) { MessageBox.Show("Get Info error"); return; } 2010-10-31 -------------------------------------------------------------------------------- 黄亮

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[libvirt] Hyper-V driver ?
by arnaud.champion＠devatom.fr 30 Oct '10

30 Oct '10

?Hi, I was just thinking about Hyper-V, has anyone ever tried to create a driver for Hyper-V via WinRM (http://msdn.microsoft.com/en-us/library/aa384426(VS.85).aspx) I don't know if it is possible, and I have certainly not the skills to make one, but I think it can be a possibility no ? Regards, Arnaud

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[libvirt] virDomainInfo marshalling prolem
by arnaud.champion＠devatom.fr 30 Oct '10

30 Oct '10

?Hi, I am working on the marshaling of the virDomainInfo structure. I have marshalled it in this way : /// <summary> /// Structure to handle domain informations /// </summary> [StructLayout(LayoutKind.Sequential)] public class DomainInfo { /// <summary> /// The running state, one of virDomainState. /// </summary> private Byte state; /// <summary> /// The maximum memory in KBytes allowed. /// </summary> public int maxMem; /// <summary> /// The memory in KBytes used by the domain. /// </summary> public int memory; /// <summary> /// The number of virtual CPUs for the domain. /// </summary> public short nrVirtCpu; /// <summary> /// The CPU time used in nanoseconds. /// </summary> public long cpuTime; /// <summary> /// The running state, one of virDomainState. /// </summary> public DomainState State { get { return (DomainState)state; } } } It work fine in 32 bits, but not in 64 bits, it seems that packing in 64 bits is different so infos are not in order. Am I right ? Regards, Arnaud

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[libvirt] [PATCH C#] Always close connections and free domains
by Matthias Bolte 30 Oct '10

30 Oct '10

Also free the unmanaged authDataPtr in the virConnectOpenAuth examples. --- examples/MonoDevelop/virConnectOpen/MainWindow.cs | 10 ++++++++++ .../MonoDevelop/virConnectOpenAuth/MainWindow.cs | 20 +++++++++++++------- examples/VisualStudio/virConnectOpen/Form1.cs | 10 ++++++++++ examples/VisualStudio/virConnectOpenAuth/Form1.cs | 16 +++++++++++----- 4 files changed, 44 insertions(+), 12 deletions(-) diff --git a/examples/MonoDevelop/virConnectOpen/MainWindow.cs b/examples/MonoDevelop/virConnectOpen/MainWindow.cs index 849f99f..0abae49 100644 --- a/examples/MonoDevelop/virConnectOpen/MainWindow.cs +++ b/examples/MonoDevelop/virConnectOpen/MainWindow.cs @@ -25,19 +25,29 @@ public partial class MainWindow : Gtk.Window protected virtual void OnButton1Clicked (object sender, System.EventArgs e) { + StoragePoolListStore.Clear (); + IntPtr conn = Connect.Open(entry1.Text); if (conn != IntPtr.Zero) { int numOfStoragePools = Connect.NumOfStoragePools(conn); if (numOfStoragePools == -1) + { ShowError("Unable to get the number of storage pools"); + goto cleanup; + } string[] storagePoolsNames = new string[numOfStoragePools]; int listStoragePools = Connect.ListStoragePools(conn, ref storagePoolsNames, numOfStoragePools); if (listStoragePools == -1) + { ShowError("Unable to list storage pools"); + goto cleanup; + } foreach (string storagePoolName in storagePoolsNames) AddStoragePoolInTreeView(storagePoolName); + cleanup: + Connect.Close(conn); } else { diff --git a/examples/MonoDevelop/virConnectOpenAuth/MainWindow.cs b/examples/MonoDevelop/virConnectOpenAuth/MainWindow.cs index 996a417..d02acd4 100644 --- a/examples/MonoDevelop/virConnectOpenAuth/MainWindow.cs +++ b/examples/MonoDevelop/virConnectOpenAuth/MainWindow.cs @@ -43,8 +43,12 @@ public partial class MainWindow : Gtk.Window Application.Quit (); a.RetVal = true; } + protected virtual void OnButton1Clicked (object sender, System.EventArgs e) { + // Remove all items + domainListStore.Clear (); + // Fill a structure to pass username and password to callbacks AuthData authData = new AuthData { password = entry3.Text, user_name = entry2.Text }; IntPtr authDataPtr = Marshal.AllocHGlobal(Marshal.SizeOf(authData)); @@ -64,7 +68,8 @@ public partial class MainWindow : Gtk.Window // Request the connection IntPtr conn = Connect.OpenAuth(entry1.Text, ref auth, 0); - + Marshal.FreeHGlobal(authDataPtr); + if (conn != IntPtr.Zero) { // Get the number of defined (not running) domains @@ -73,7 +78,7 @@ public partial class MainWindow : Gtk.Window if (Connect.ListDefinedDomains(conn, ref definedDomainNames, numOfDefinedDomains) == -1) { ShowError("Unable to list defined domains"); - return; + goto cleanup; } // Add the domain names to the listbox @@ -88,7 +93,7 @@ public partial class MainWindow : Gtk.Window if (Connect.ListDomains(conn, runningDomainIDs, numOfRunningDomain) == -1) { ShowError("Unable to list running domains"); - return; + goto cleanup; } // Add the domain names to the listbox @@ -98,16 +103,19 @@ public partial class MainWindow : Gtk.Window if (domainPtr == IntPtr.Zero) { ShowError("Unable to lookup domains by id"); - return; + goto cleanup; } string domainName = Domain.GetName(domainPtr); + Domain.Free(domainPtr); if (string.IsNullOrEmpty(domainName)) { ShowError("Unable to get domain name"); - return; + goto cleanup; } AddDomainInTreeView(domainName); } + + cleanup: Connect.Close(conn); } else @@ -156,7 +164,5 @@ public partial class MainWindow : Gtk.Window } return 0; } - - } diff --git a/examples/VisualStudio/virConnectOpen/Form1.cs b/examples/VisualStudio/virConnectOpen/Form1.cs index 870b83d..240aaaa 100644 --- a/examples/VisualStudio/virConnectOpen/Form1.cs +++ b/examples/VisualStudio/virConnectOpen/Form1.cs @@ -27,18 +27,28 @@ namespace virConnectOpen private void btnConnect_Click(object sender, EventArgs e) { + lbStoragePool.Items.Clear(); + IntPtr conn = Connect.Open(tbURI.Text); if (conn != IntPtr.Zero) { int numOfStoragePools = Connect.NumOfStoragePools(conn); if (numOfStoragePools == -1) + { ShowError("Unable to get the number of storage pools"); + goto cleanup; + } string[] storagePoolsNames = new string[numOfStoragePools]; int listStoragePools = Connect.ListStoragePools(conn, ref storagePoolsNames, numOfStoragePools); if (listStoragePools == -1) + { ShowError("Unable to list storage pools"); + goto cleanup; + } foreach (string storagePoolName in storagePoolsNames) lbStoragePool.Items.Add(storagePoolName); + cleanup: + Connect.Close(conn); } else { diff --git a/examples/VisualStudio/virConnectOpenAuth/Form1.cs b/examples/VisualStudio/virConnectOpenAuth/Form1.cs index 7901c27..87634a0 100644 --- a/examples/VisualStudio/virConnectOpenAuth/Form1.cs +++ b/examples/VisualStudio/virConnectOpenAuth/Form1.cs @@ -44,6 +44,8 @@ namespace virConnectOpenAuth private void btnConnect_Click(object sender, EventArgs e) { + lbDomains.Items.Clear(); + // Fill a structure to pass username and password to callbacks AuthData authData = new AuthData { password = tbPassword.Text, user_name = tbUsername.Text }; IntPtr authDataPtr = Marshal.AllocHGlobal(Marshal.SizeOf(authData)); @@ -62,6 +64,7 @@ namespace virConnectOpenAuth // Request the connection IntPtr conn = Connect.OpenAuth(tbURI.Text, ref auth, 0); + Marshal.FreeHGlobal(authDataPtr); if (conn != IntPtr.Zero) { @@ -70,9 +73,9 @@ namespace virConnectOpenAuth string[] definedDomainNames = new string[numOfDefinedDomains]; if (Connect.ListDefinedDomains(conn, ref definedDomainNames, numOfDefinedDomains) == -1) { - MessageBox.Show("Unable to list defined domains", "List defined domains failed", MessageBoxButtons.OK, + MessageBox.Show("Unable to list defined domains", "List defined domains failed", MessageBoxButtons.OK, MessageBoxIcon.Error); - return; + goto cleanup; } // Add the domain names to the listbox @@ -86,7 +89,7 @@ namespace virConnectOpenAuth { MessageBox.Show("Unable to list running domains", "List running domains failed", MessageBoxButtons.OK, MessageBoxIcon.Error); - return; + goto cleanup; } // Add the domain names to the listbox @@ -97,17 +100,20 @@ namespace virConnectOpenAuth { MessageBox.Show("Unable to lookup domains by id", "Lookup domain failed", MessageBoxButtons.OK, MessageBoxIcon.Error); - return; + goto cleanup; } string domainName = Domain.GetName(domainPtr); + Domain.Free(domainPtr); if (string.IsNullOrEmpty(domainName)) { MessageBox.Show("Unable to get domain name", "Get domain name failed", MessageBoxButtons.OK, MessageBoxIcon.Error); - return; + goto cleanup; } lbDomains.Items.Add(domainName); } + + cleanup: Connect.Close(conn); } else -- 1.7.0.4

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[libvirt] Lxc support
by Jean-Philippe Menil 30 Oct '10

30 Oct '10

Hi, i'm trying to test the lxc support in libvirt, but but libvirt failed to start container with error "lxcContainerAvailable:897 : clone call returned Operation not permitted, container support is not enabled" Althought i've compiled libvirt with th lxc support: configure: Configuration summary configure: ===================== configure: configure: Drivers configure: configure: Xen: no configure: Proxy: no configure: QEMU: yes configure: UML: yes configure: OpenVZ: no configure: VBox: no configure: XenAPI: no configure: LXC: yes configure: PHYP: no configure: ONE: no configure: ESX: no configure: Test: yes configure: Remote: yes configure: Network: yes configure: Libvirtd: yes configure: netcf: no configure: macvtap: yes configure: virtport: no Here is my xml: <domain type='lxc'> <name>lxc1</name> <memory>500000</memory> <os> <type>exe</type> <init>/bin/sh</init> </os> <vcpu>1</vcpu> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>destroy</on_crash> <devices> <emulator>/usr/lib/libvirt/libvirt_lxc</emulator> <filesystem type='mount'> <source dir='/var/lib/lxc/lxc1/rootfs'/> <target dir='/'/> </filesystem> <interface type='bridge'> <source bridge='U13'/> <target dev='veth0'/> </interface> <console type='pty' > <target port='5'/> </console> </devices> </domain> And here are the errors: 10:41:09.968: debug : virCgroupNew:542 : New group / 10:41:09.968: debug : virCgroupDetect:232 : Detected mount/mapping 0:cpu at /var/local/cgroup in 10:41:09.968: debug : virCgroupDetect:232 : Detected mount/mapping 1:cpuacct at /var/local/cgroup in 10:41:09.968: debug : virCgroupDetect:232 : Detected mount/mapping 2:cpuset at /var/local/cgroup in 10:41:09.968: debug : virCgroupDetect:232 : Detected mount/mapping 3:memory at /var/local/cgroup in 10:41:09.968: debug : virCgroupDetect:232 : Detected mount/mapping 4:devices at /var/local/cgroup in 10:41:09.968: debug : virCgroupDetect:232 : Detected mount/mapping 5:freezer at /var/local/cgroup in 10:41:09.968: debug : virCgroupNew:542 : New group /libvirt 10:41:09.968: debug : virCgroupDetect:232 : Detected mount/mapping 0:cpu at /var/local/cgroup in 10:41:09.968: debug : virCgroupDetect:232 : Detected mount/mapping 1:cpuacct at /var/local/cgroup in 10:41:09.968: debug : virCgroupDetect:232 : Detected mount/mapping 2:cpuset at /var/local/cgroup in 10:41:09.968: debug : virCgroupDetect:232 : Detected mount/mapping 3:memory at /var/local/cgroup in 10:41:09.968: debug : virCgroupDetect:232 : Detected mount/mapping 4:devices at /var/local/cgroup in 10:41:09.968: debug : virCgroupDetect:232 : Detected mount/mapping 5:freezer at /var/local/cgroup in 10:41:09.968: debug : virCgroupMakeGroup:484 : Make group /libvirt 10:41:09.968: debug : virCgroupMakeGroup:496 : Make controller /var/local/cgroup/libvirt/ 10:41:09.968: debug : virCgroupMakeGroup:496 : Make controller /var/local/cgroup/libvirt/ 10:41:09.968: debug : virCgroupMakeGroup:496 : Make controller /var/local/cgroup/libvirt/ 10:41:09.968: debug : virCgroupMakeGroup:496 : Make controller /var/local/cgroup/libvirt/ 10:41:09.968: debug : virCgroupMakeGroup:496 : Make controller /var/local/cgroup/libvirt/ 10:41:09.968: debug : virCgroupMakeGroup:496 : Make controller /var/local/cgroup/libvirt/ 10:41:09.968: debug : virCgroupNew:542 : New group /libvirt/lxc 10:41:09.968: debug : virCgroupDetect:232 : Detected mount/mapping 0:cpu at /var/local/cgroup in 10:41:09.968: debug : virCgroupDetect:232 : Detected mount/mapping 1:cpuacct at /var/local/cgroup in 10:41:09.968: debug : virCgroupDetect:232 : Detected mount/mapping 2:cpuset at /var/local/cgroup in 10:41:09.968: debug : virCgroupDetect:232 : Detected mount/mapping 3:memory at /var/local/cgroup in 10:41:09.968: debug : virCgroupDetect:232 : Detected mount/mapping 4:devices at /var/local/cgroup in 10:41:09.968: debug : virCgroupDetect:232 : Detected mount/mapping 5:freezer at /var/local/cgroup in 10:41:09.968: debug : virCgroupMakeGroup:484 : Make group /libvirt/lxc 10:41:09.968: debug : virCgroupMakeGroup:496 : Make controller /var/local/cgroup/libvirt/lxc/ 10:41:09.968: debug : lxcControllerRun:595 : Setting up private /dev/pts 10:41:10.012: debug : lxcControllerRun:621 : Mouting 'devpts' on /var/lib/lxc/lxc1/rootfs/dev/pts 10:41:10.012: debug : lxcControllerRun:636 : Opening tty on private /var/lib/lxc/lxc1/rootfs/dev/pts/ptmx 10:41:10.044: debug : lxcContainerAvailable:897 : clone call returned Operation not permitted, container support is not enabled 10:41:10.044: debug : lxcContainerStart:848 : Enable network namespaces 10:41:10.076: debug : lxcContainerStart:854 : clone() completed, new container PID is -1 10:41:10.076: error : lxcContainerStart:858 : Failed to run clone container: Operation not permitted 10:41:10.076: debug : vethDelete:159 : veth: veth1 10:41:10.076: debug : virRunWithHook:818 : ip link del veth1 Can someone tell me what i'm doing wrong? Many thanks. Regards.

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[libvirt] [PATCH] build: cleanup declaration of xen tests.
by Diego Elio Pettenò 29 Oct '10

29 Oct '10

Only build statstest and reconnect if they should be used, so add them behind the ENABLE_XEN_TESTS conditional. --- tests/Makefile.am | 10 ++++++---- 1 files changed, 6 insertions(+), 4 deletions(-) diff --git a/tests/Makefile.am b/tests/Makefile.am index 9720b6e..20b6805 100644 --- a/tests/Makefile.am +++ b/tests/Makefile.am @@ -73,11 +73,14 @@ EXTRA_DIST = \ qemuhelpdata check_PROGRAMS = virshtest conftest sockettest \ - nodeinfotest statstest qparamtest virbuftest + nodeinfotest qparamtest virbuftest if WITH_XEN check_PROGRAMS += xml2sexprtest sexpr2xmltest \ - reconnect xmconfigtest xencapstest + xmconfigtest xencapstest +if ENABLE_XEN_TESTS +check_PROGRAMS += statstest reconnect +endif endif if WITH_QEMU check_PROGRAMS += qemuxml2argvtest qemuxml2xmltest qemuargv2xmltest qemuhelptest @@ -149,7 +152,6 @@ EXTRA_DIST += $(test_scripts) TESTS = virshtest \ nodeinfotest \ - statstest \ qparamtest \ virbuftest \ sockettest \ @@ -161,7 +163,7 @@ TESTS += xml2sexprtest \ xmconfigtest \ xencapstest if ENABLE_XEN_TESTS -TESTS += reconnect +TESTS += reconnect statstest endif endif -- 1.7.3.2

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[libvirt] [PATCH 1/2] support compression at virsh dump
by KAMEZAWA Hiroyuki 29 Oct '10

29 Oct '10

>From 4f74c4a69785432258ad5ea5e695d1b94aaa5b30 Mon Sep 17 00:00:00 2001 From: KAMEZAWA Hiroyuki <kamezawa.hiroyu(a)jp.fujitsu.com> Date: Thu, 28 Oct 2010 16:31:46 +0900 Subject: [PATCH 1/2] add compression support for "virsh dump" Add dump_image_format[] to qemu.conf and support compressed dump at virsh dump. coredump compression is important for saving disk space in an environment where multiple guests run. In general, "disk space for dump" is specially allocated and will be a dead space in the system. It's used only at emergency. So, it's better to have both of save_image_format and dump_image_format. "save" is done in scheduled manner with enough calculated disk space for it. This code reuses some of save_image_format[] and supports the same format. Changelog: - modified libvirtd_qemu.aug - modified test_libvirtd_qemu.aug - fixed error handling of qemudSaveCompressionTypeFromString() --- src/qemu/libvirtd_qemu.aug | 1 + src/qemu/qemu.conf | 4 +++ src/qemu/qemu_conf.c | 11 ++++++++++ src/qemu/qemu_conf.h | 1 + src/qemu/qemu_driver.c | 41 ++++++++++++++++++++++++++++++++------ src/qemu/test_libvirtd_qemu.aug | 2 + 6 files changed, 53 insertions(+), 7 deletions(-) diff --git a/src/qemu/libvirtd_qemu.aug b/src/qemu/libvirtd_qemu.aug index b9ace3e..66994fd 100644 --- a/src/qemu/libvirtd_qemu.aug +++ b/src/qemu/libvirtd_qemu.aug @@ -36,6 +36,7 @@ module Libvirtd_qemu = | str_array_entry "cgroup_controllers" | str_array_entry "cgroup_device_acl" | str_entry "save_image_format" + | str_entry "dump_image_format" | str_entry "hugetlbfs_mount" | bool_entry "relaxed_acs_check" | bool_entry "vnc_allow_host_audio" diff --git a/src/qemu/qemu.conf b/src/qemu/qemu.conf index 53b76e7..e2c581e 100644 --- a/src/qemu/qemu.conf +++ b/src/qemu/qemu.conf @@ -145,7 +145,11 @@ # saving a domain in order to save disk space; the list above is in descending # order by performance and ascending order by compression ratio. # +# save_image_format is used when you use 'virsh save' at scheduled saving. +# dump_image_format is used when you use 'virsh dump' at emergency crashdump. +# # save_image_format = "raw" +# dump_image_format = "raw" # If provided by the host and a hugetlbfs mount point is configured, diff --git a/src/qemu/qemu_conf.c b/src/qemu/qemu_conf.c index 5bd3d4c..b5c17b5 100644 --- a/src/qemu/qemu_conf.c +++ b/src/qemu/qemu_conf.c @@ -325,6 +325,17 @@ int qemudLoadDriverConfig(struct qemud_driver *driver, } } + p = virConfGetValue (conf, "dump_image_format"); + CHECK_TYPE ("dump_image_format", VIR_CONF_STRING); + if (p && p->str) { + VIR_FREE(driver->dumpImageFormat); + if (!(driver->dumpImageFormat = strdup(p->str))) { + virReportOOMError(); + virConfFree(conf); + return -1; + } + } + p = virConfGetValue (conf, "hugetlbfs_mount"); CHECK_TYPE ("hugetlbfs_mount", VIR_CONF_STRING); if (p && p->str) { diff --git a/src/qemu/qemu_conf.h b/src/qemu/qemu_conf.h index 530dcdb..bbe6887 100644 --- a/src/qemu/qemu_conf.h +++ b/src/qemu/qemu_conf.h @@ -164,6 +164,7 @@ struct qemud_driver { virSecurityDriverPtr securitySecondaryDriver; char *saveImageFormat; + char *dumpImageFormat; pciDeviceList *activePciHostdevs; diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index b119ca1..51ad50b 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -5907,11 +5907,22 @@ static int qemudDomainCoreDump(virDomainPtr dom, int resume = 0, paused = 0; int ret = -1, fd = -1; virDomainEventPtr event = NULL; - const char *args[] = { - "cat", - NULL, - }; + int compress; qemuDomainObjPrivatePtr priv; + /* + * We reuse "save" flag for "dump" here. Then, we can support the same + * format in "save" and "dump". + */ + compress = QEMUD_SAVE_FORMAT_RAW; + if (driver->dumpImageFormat) { + compress = qemudSaveCompressionTypeFromString(driver->dumpImageFormat); + if (compress < 0) { + qemuReportError(VIR_ERR_OPERATION_FAILED, "%s", + _("Invalid dump image format specified in " + "configuration file")); + return -1; + } + } qemuDriverLock(driver); vm = virDomainFindByUUID(&driver->domains, dom->uuid); @@ -5978,9 +5989,25 @@ static int qemudDomainCoreDump(virDomainPtr dom, } qemuDomainObjEnterMonitorWithDriver(driver, vm); - ret = qemuMonitorMigrateToFile(priv->mon, - QEMU_MONITOR_MIGRATE_BACKGROUND, - args, path, 0); + if (compress == QEMUD_SAVE_FORMAT_RAW) { + const char *args[] = { + "cat", + NULL, + }; + ret = qemuMonitorMigrateToFile(priv->mon, + QEMU_MONITOR_MIGRATE_BACKGROUND, + args, path, 0); + } else { + const char *prog = qemudSaveCompressionTypeToString(compress); + const char *args[] = { + prog, + "-c", + NULL, + }; + ret = qemuMonitorMigrateToFile(priv->mon, + QEMU_MONITOR_MIGRATE_BACKGROUND, + args, path, 0); + } qemuDomainObjExitMonitorWithDriver(driver, vm); if (ret < 0) goto endjob; diff --git a/src/qemu/test_libvirtd_qemu.aug b/src/qemu/test_libvirtd_qemu.aug index 6788346..efbf642 100644 --- a/src/qemu/test_libvirtd_qemu.aug +++ b/src/qemu/test_libvirtd_qemu.aug @@ -94,6 +94,8 @@ cgroup_device_acl = [ \"/dev/null\", \"/dev/full\", \"/dev/zero\" ] save_image_format = \"gzip\" +dump_image_format = \"gzip\" + hugetlbfs_mount = \"/dev/hugepages\" set_process_name = 1 -- 1.7.2.3

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