Re: [libvirt] [RFC] Memory controller exploitation in libvirt
On Mon, 30 Aug 2010 18:40:34 +0530, Balbir Singh bal...@linux.vnet.ibm.com wrote: On Mon, Aug 30, 2010 at 11:56 AM, Nikunj A. Dadhania nik...@linux.vnet.ibm.com wrote: snip 4) KVM LXC memory.limit_in_bytes: Memory hard limit memory.soft_limit_in_bytes: Memory limit held during contention held might not be the right word for soft limit. How about - Memory limit ensured during contention memory.memsw_limit_in_bytes: Memory+Swap hard limit memory.swapiness: Controls the tendency of moving the VM processes to the swap. Value range is 0-100, where 0 means, avoid swapping as long as possible and 100 means aggressively swap processes. Statistics: memory.usage_in_bytes: Current memory usage memory.memsw_usage_in_bytes: Current memory+swap usage memory.max_usage_in_bytes: Maximum memory usage recorded memory.memsw_max_usage_in_bytes: Maximum memory+swap usage We also have memory.stat, memory.hierarchy - The question is do we care about hierarchical control? We also have controls to decide whether to move memory on moving from one cgroup to another, that might not apply to the LXC/QEMU case. There is also memory.failcnt which I am not sure makes sense to export. memory.hierarchy is being used in libvirt, there is an internal API (virCgroupSetMemoryUseHierarchy) for enabling. I am not sure if this should be exported. memory.stat will be good one for getting the stats. I will add this to the statistics section. Nikunj -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
Re: [libvirt] [RFC] Memory controller exploitation in libvirt
held might not be the right word for soft limit. How about - Memory limit ensured during contention I'd recommend limit to enforce on memory contention Balbir -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
Re: [libvirt] Best place to put links to the libvirt App Dev Guide?
On Tue, Aug 31, 2010 at 12:51:54PM +1000, Justin Clift wrote: Hi guys, Where's the best place in the libvirt.org menu structure, to point people to the (developing) libvirt App Dev Guide? My initial thinking is: a) Have a link to the .pdf in the Downloads section + b) Maybe a new top title section like: Documentation - Dev Guide With links to the html, html (one big page), and pdf files. Sound reasonable? A combination of both of those sounds fine. PDF download in the main Downloads section, and HTML under the Docs section Daniel -- |: Red Hat, Engineering, London-o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://deltacloud.org :| |: http://autobuild.org-o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :| -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
Re: [libvirt] [PATCH] Explicitly pass uml_dir argument to user-mode-linux
On 25-08-2010 11:03, Soren Hansen wrote: uml_dir overrides user-mode-linux's default of ~/.uml. This is needed for a couple of different reasons: Any comments on this patch? It seems perfectly reasonable to me to get this in regardless of the outcome of this discussion: https://www.redhat.com/archives/libvir-list/2010-August/msg00672.html -- Soren Hansen Ubuntu Developer http://www.ubuntu.com/ -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
Re: [libvirt] [PATCH] Explicitly pass uml_dir argument to user-mode-linux
On Wed, Aug 25, 2010 at 11:03:42AM +0200, Soren Hansen wrote: uml_dir overrides user-mode-linux's default of ~/.uml. This is needed for a couple of different reasons: libvirt expects this to default to virGetUserDirectory(geteuid()) + '/.uml'. However, user-mode-linux actually uses the HOME environment variable to determine where to look for the uml sockets, but if running libvirtd under sudo (which I routinely do during development), $HOME is pointing at my user's homedir, while my euid is 0, so libvirt looks in /root. Also (and this was my actual motivation for this patch), if HOME isn't set at all, user-mode-linux utterly fails. Looking at the code, it seems it's meant to emit a warning, but alas, it doesn't for some reason. If running libvirtd from upstart, HOME is not set, so any system using upstart will need this change. Signed-off-by: Soren Hansen so...@linux2go.dk --- src/uml/uml_conf.c |4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/src/uml/uml_conf.c b/src/uml/uml_conf.c index 65b06c5..4906192 100644 --- a/src/uml/uml_conf.c +++ b/src/uml/uml_conf.c @@ -409,7 +409,7 @@ static char *umlNextArg(char *args) * for a given virtual machine. */ int umlBuildCommandLine(virConnectPtr conn, -struct uml_driver *driver ATTRIBUTE_UNUSED, +struct uml_driver *driver, virDomainObjPtr vm, fd_set *keepfd, const char ***retargv, @@ -499,7 +499,6 @@ int umlBuildCommandLine(virConnectPtr conn, ADD_ENV_COPY(LD_PRELOAD); ADD_ENV_COPY(LD_LIBRARY_PATH); ADD_ENV_COPY(PATH); -ADD_ENV_COPY(HOME); ADD_ENV_COPY(USER); ADD_ENV_COPY(LOGNAME); ADD_ENV_COPY(TMPDIR); @@ -508,6 +507,7 @@ int umlBuildCommandLine(virConnectPtr conn, //ADD_ARG_PAIR(con0, fd:0,fd:1); ADD_ARG_PAIR(mem, memory); ADD_ARG_PAIR(umid, vm-def-name); +ADD_ARG_PAIR(uml_dir, driver-monitorDir); if (vm-def-os.root) ADD_ARG_PAIR(root, vm-def-os.root); ACK Regards, Daniel -- |: Red Hat, Engineering, London-o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://deltacloud.org :| |: http://autobuild.org-o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :| -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
Re: [libvirt] virsh create and virsh dumpxml certain code location
On Tue, Aug 24, 2010 at 11:31:14AM -0600, Jim Fehlig wrote: From 6320c63d7c5077cf27050a567ca9d7ab7c17b189 Mon Sep 17 00:00:00 2001 From: Jim Fehlig jfeh...@novell.com Date: Tue, 24 Aug 2010 11:26:15 -0600 Subject: [PATCH] Add blktap2 support to xend driver Xen4.0 includes a new blktap2 implementation, which is specified with 'tap2' prefix. AFAICT it's configuration syntax is identical to blktap, with exception of 'tap2' vs 'tap' prefix. This patch takes the simple approach of accepting and generating sexp containing 'tap2' prefix. V2: Also generate sexp containing tap2 device type ACK this looks good in combination with the test case posted separately. Daniel -- |: Red Hat, Engineering, London-o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://deltacloud.org :| |: http://autobuild.org-o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :| -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
Re: [libvirt] [PATCH] Use global directory as UML's monitorDir for privileged connections
On Wed, Aug 25, 2010 at 06:39:11PM +0200, Soren Hansen wrote:
On 25-08-2010 18:07, Daniel P. Berrange wrote:
--- a/src/uml/uml_driver.c
+++ b/src/uml/uml_driver.c
@@ -373,6 +373,10 @@ umlStartup(int privileged) {
if ((base = strdup (SYSCONF_DIR /libvirt)) == NULL)
goto out_of_memory;
+
+if (virAsprintf(uml_driver-monitorDir,
+%s/run/libvirt/uml, LOCAL_STATE_DIR) == -1)
+goto out_of_memory;
Can we make this '%s/lib/libvirt/uml'
You want transient stuff like UNIX sockets in /var/lib? That seems odd
to me.
Not hugely, but I don't want it to overlap with the directories
used by libvirtd for transient stuff. If we make it '%/run/libvirt/uml-guest'
instead that would be OK
-}
-if (virAsprintf(uml_driver-monitorDir,
-%s/.uml, userdir) == -1)
-goto out_of_memory;
+if (virAsprintf(uml_driver-monitorDir,
+%s/.uml, userdir) == -1)
+goto out_of_memory;
+}
And '%s/.libvirt/uml/lib'
I understand your desire to be consistent, but I really think
integrating well with existing management tools for the hypervisor (in
this case uml-utilities) is more important.
Agreed, I hadn't seen your reply about uml-utilities when writing
this.
Daniel
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Re: [libvirt] [PATCH] Use global directory as UML's monitorDir for privileged connections
On 31-08-2010 12:39, Daniel P. Berrange wrote: Can we make this '%s/lib/libvirt/uml' You want transient stuff like UNIX sockets in /var/lib? That seems odd to me. Not hugely, but I don't want it to overlap with the directories used by libvirtd for transient stuff. If we make it '%/run/libvirt/uml-guest' instead that would be OK Excellent. I understand your desire to be consistent, but I really think integrating well with existing management tools for the hypervisor (in this case uml-utilities) is more important. Agreed, I hadn't seen your reply about uml-utilities when writing this. Excellent again. I'll make these adjustments. -- Soren Hansen Ubuntu Developer http://www.ubuntu.com/ -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
[libvirt] [PATCH] Use global directory as UML's monitorDir for privileged connections
For privileged UML connections (uml:///system), we shouldn't use root's
home dir, but rather somewhere in /var/run/libvirt/uml-guest.
https://bugzilla.redhat.com/show_bug.cgi?id=499536
Signed-off-by: Soren Hansen so...@linux2go.dk
---
src/uml/uml_driver.c | 12
1 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/src/uml/uml_driver.c b/src/uml/uml_driver.c
index 8b129b7..0a5c829 100644
--- a/src/uml/uml_driver.c
+++ b/src/uml/uml_driver.c
@@ -373,6 +373,10 @@ umlStartup(int privileged) {
if ((base = strdup (SYSCONF_DIR /libvirt)) == NULL)
goto out_of_memory;
+
+if (virAsprintf(uml_driver-monitorDir,
+%s/run/libvirt/uml-guest, LOCAL_STATE_DIR) == -1)
+goto out_of_memory;
} else {
if (virAsprintf(uml_driver-logDir,
@@ -381,11 +385,11 @@ umlStartup(int privileged) {
if (virAsprintf(base, %s/.libvirt, userdir) == -1)
goto out_of_memory;
-}
-if (virAsprintf(uml_driver-monitorDir,
-%s/.uml, userdir) == -1)
-goto out_of_memory;
+if (virAsprintf(uml_driver-monitorDir,
+%s/.uml, userdir) == -1)
+goto out_of_memory;
+}
/* Configuration paths are either ~/.libvirt/uml/... (session) or
* /etc/libvirt/uml/... (system).
--
1.7.0.4
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Re: [libvirt] [libvirt-users] Decent How-To now on the wiki for setting up Transport Layer Security
On Mon, Aug 30, 2010 at 08:46:43PM +1000, Justin Clift wrote: Hi all, For anyone that's interested in setting up TLS with libvirt, but hasn't gotten around to it yet, there's a decent guide on the wiki now: http://wiki.libvirt.org/page/TLSSetup It's user focused (ie SysAdmin's), and has lots of pics explaining concepts, plus shows what needs to be done, and shows how to do it. Please note, it doesn't cover SASL, it's just plain host based TLS. Very much open to feedback on it, if people have suggestions for improvement. Hope that helps. :) Very nice :-) Thanks ! Daniel -- Daniel Veillard | libxml Gnome XML XSLT toolkit http://xmlsoft.org/ dan...@veillard.com | Rpmfind RPM search engine http://rpmfind.net/ http://veillard.com/ | virtualization library http://libvirt.org/ -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
Re: [libvirt] Best place to put links to the libvirt App Dev Guide?
On Tue, Aug 31, 2010 at 10:30:46AM +0100, Daniel P. Berrange wrote: On Tue, Aug 31, 2010 at 12:51:54PM +1000, Justin Clift wrote: Hi guys, Where's the best place in the libvirt.org menu structure, to point people to the (developing) libvirt App Dev Guide? My initial thinking is: a) Have a link to the .pdf in the Downloads section + b) Maybe a new top title section like: Documentation - Dev Guide With links to the html, html (one big page), and pdf files. Sound reasonable? A combination of both of those sounds fine. PDF download in the main Downloads section, and HTML under the Docs section Agreed, Daniel -- Daniel Veillard | libxml Gnome XML XSLT toolkit http://xmlsoft.org/ dan...@veillard.com | Rpmfind RPM search engine http://rpmfind.net/ http://veillard.com/ | virtualization library http://libvirt.org/ -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
Re: [libvirt] Need help, how can I access to qemu-monitor with libvirt 0.8.1
On 08/31/2010 03:41 AM, Lai Jiangshan wrote: Hi, all I encounter this problem when I try to send NMI to guest. I don't know how. I think if I can access to the qemu-monitor, I can just do this command in the qemu-monitor: nmicpu#. But I don't know how to access to qemu-monitor, I think I can get help here. The only way to do this with libvirt 0.8.1 is to write a wrapper script which adds arguments and invokes the real qemu, then point libvirt to the location of the wrapper instead of the real qemu. Not the most trivial task. I noticed that libvirt 0.8.3 supports remote protocol and arbitrary qemu commands, but I did not found any document, how can I use it? That's different than the 0.8.1 of your subject line. Yes, 0.8.3 makes it easier to add additional arbitrary arguments to the qemu command line via your XML file. The list archives has several examples of this; most recently: https://www.redhat.com/archives/libvir-list/2010-August/msg00589.html -- Eric Blake ebl...@redhat.com+1-801-349-2682 Libvirt virtualization library http://libvirt.org -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
Re: [libvirt] Best place to put links to the libvirt App Dev Guide?
Hi all How do I discover the MAC address of machines that are available just with only BIOS installed (no Operating System present). And I need to find the mac address of such machines that are up with just BIOS. How do i do image installations on * bare-metal *? Please Guide me. Thanks. Saravanan Sundaramoorthy Red Hat Certified Engineer http://www.google.com/profiles/dearsaravanan#about +91 99404 32545 -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
[libvirt] How to discover the baremetal resources install a VM image on the same
Hi all How do I discover the MAC address of machines that are available just with only BIOS installed (no Operating System present). And I need to find the mac address of such machines that are up with just BIOS. How do i do image installations on * bare-metal *? Please Guide me. Thanks. Saravanan Sundaramoorthy Red Hat Certified Engineer http://www.google.com/profiles/dearsaravanan#about +91 99404 32545 -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
Re: [libvirt] virsh create and virsh dumpxml certain code location
On 08/31/2010 04:45 AM, Daniel P. Berrange wrote: On Tue, Aug 24, 2010 at 11:31:14AM -0600, Jim Fehlig wrote: From 6320c63d7c5077cf27050a567ca9d7ab7c17b189 Mon Sep 17 00:00:00 2001 From: Jim Fehligjfeh...@novell.com Date: Tue, 24 Aug 2010 11:26:15 -0600 Subject: [PATCH] Add blktap2 support to xend driver Xen4.0 includes a new blktap2 implementation, which is specified with 'tap2' prefix. AFAICT it's configuration syntax is identical to blktap, with exception of 'tap2' vs 'tap' prefix. This patch takes the simple approach of accepting and generating sexp containing 'tap2' prefix. V2: Also generate sexp containing tap2 device type ACK this looks good in combination with the test case posted separately. Pushed. -- Eric Blake ebl...@redhat.com+1-801-349-2682 Libvirt virtualization library http://libvirt.org -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
Re: [libvirt] [PATCH] Tests for Xen 4.0 blktap2
On 08/24/2010 03:49 PM, Jim Fehlig wrote: Tests for blktap2, pending ACK of blktap2 patch for xend driver discussed here https://www.redhat.com/archives/libvir-list/2010-August/msg00636.html Pushed, per the ACK here: https://www.redhat.com/archives/libvir-list/2010-August/msg00717.html -- Eric Blake ebl...@redhat.com+1-801-349-2682 Libvirt virtualization library http://libvirt.org -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
[libvirt] [PATCH] maint: track moved file
* daemon/.gitignore: Move libvirt-guests.init... * tools/.gitignore: ...to its new location. --- Pushing under the obvious rule, as fallout from 2c090a555. daemon/.gitignore |1 - tools/.gitignore |1 + 2 files changed, 1 insertions(+), 1 deletions(-) diff --git a/daemon/.gitignore b/daemon/.gitignore index 4475b6d..8ed7784 100644 --- a/daemon/.gitignore +++ b/daemon/.gitignore @@ -7,7 +7,6 @@ Makefile.in libvirt_qemud libvirtd libvirtd.init -libvirt-guests.init libvirtd*.logrotate libvirtd.pod libvirtd.8 diff --git a/tools/.gitignore b/tools/.gitignore index 51f1f66..3e34ea8 100644 --- a/tools/.gitignore +++ b/tools/.gitignore @@ -1,3 +1,4 @@ +libvirt-guests.init virt-xml-validate virt-pki-validate *.1 -- 1.7.2.2 -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
Re: [libvirt] [PATCH] Explicitly pass uml_dir argument to user-mode-linux
On 08/31/2010 04:37 AM, Daniel P. Berrange wrote: On Wed, Aug 25, 2010 at 11:03:42AM +0200, Soren Hansen wrote: uml_dir overrides user-mode-linux's default of ~/.uml. This is needed for a couple of different reasons: @@ -508,6 +507,7 @@ int umlBuildCommandLine(virConnectPtr conn, //ADD_ARG_PAIR(con0, fd:0,fd:1); ADD_ARG_PAIR(mem, memory); ADD_ARG_PAIR(umid, vm-def-name); +ADD_ARG_PAIR(uml_dir, driver-monitorDir); if (vm-def-os.root) ADD_ARG_PAIR(root, vm-def-os.root); ACK Pushed. -- Eric Blake ebl...@redhat.com+1-801-349-2682 Libvirt virtualization library http://libvirt.org -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
Re: [libvirt] [PATCH] Use global directory as UML's monitorDir for privileged connections
On 08/31/2010 05:44 AM, Soren Hansen wrote: For privileged UML connections (uml:///system), we shouldn't use root's home dir, but rather somewhere in /var/run/libvirt/uml-guest. https://bugzilla.redhat.com/show_bug.cgi?id=499536 Signed-off-by: Soren Hansenso...@linux2go.dk --- src/uml/uml_driver.c | 12 1 files changed, 8 insertions(+), 4 deletions(-) I think this version captures all the discussion on the ideal locations for privileged vs. regular users elsewhere in the thread. ACK, and pushed. -- Eric Blake ebl...@redhat.com+1-801-349-2682 Libvirt virtualization library http://libvirt.org -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list
Re: [libvirt] [PATCH] virsh: remove driver check from attach-disk command
On 08/24/2010 10:09 AM, Ryan Harper wrote:
Virsh shouldn't check for driver support but rather let the backend handled
this.
After removing the check, I can successfully attach file-based images to a qemu
VM with attach-disk.
if (driver) {
-if (STREQ(driver, file) || STREQ(driver, tap)) {
+if (STREQ(driver, file) || STREQ(driver, tap))
isFile = 1;
-} else if (STRNEQ(driver, phy)) {
-vshError(ctl, _(No support for %s in command 'attach-disk'),
- driver);
-goto cleanup;
-}
}
ACK; pushed.
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