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Re: [Libvir] a couple of questions -Newbie
by Richard W.M. Jones 04 Mar '08

04 Mar '08

On Mon, Mar 03, 2008 at 03:38:46PM -0700, Spencer Parker wrote: > I actually just saw this and started playing around with it. Should > actually do what I need to do for that part. The next thing I need to > monitor is disk usage. Disk usage is tricky to monitor from the hypervisor. Have a look around for my 'virt-df' tool (which doesn't actually work at the moment -- it needs a bit of loving). Here are a couple of starting points: http://www.redhat.com/archives/libvir-list/2007-September/msg00266.html http://hg.et.redhat.com/virt/applications/virt-top--devel?f=ba4432dc8714;fi… In general terms, if you want to monitor things like disk usage, actual memory usage, process lists and so on, you need to have an agent running inside the guest. Collectd might be a good start. Rich. -- Richard Jones, Emerging Technologies, Red Hat http://et.redhat.com/~rjones virt-p2v converts physical machines to virtual machines. Boot with a live CD or over the network (PXE) and turn machines into Xen guests. http://et.redhat.com/~rjones/virt-p2v

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[Libvir] OS X Compile Issue
by Pat Wendorf 04 Mar '08

04 Mar '08

I followed the large thread posted in January re: building libvirt on OS X, but I seem to have run into a snag near the end of the compile: gcc -DHAVE_CONFIG_H -I. -I. -I.. -I../gnulib/lib -I../gnulib/lib -I../include -I../include -I../qemud -I/usr/include/libxml2 -DBINDIR=\"/usr/local/libexec\" -DSBINDIR=\"/usr/local/sbin\" -DSYSCONF_DIR=\"/usr/local/etc\" -DLOCALEBASEDIR=\"/usr/local/share/locale\" -DLOCAL_STATE_DIR=\"/usr/local/var\" -DGETTEXT_PACKAGE=\"libvirt\" -Wall -Wformat -Wformat-security -Wmissing-prototypes -Wnested-externs -Wpointer-arith -Wextra -Wshadow -Wcast-align -Wwrite-strings -Waggregate-return -Wstrict-prototypes -Winline -Wredundant-decls -Wno-sign-compare -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fasynchronous-unwind-tables -DWITH_TEST -DWITH_REMOTE -I /opt/local/include -L/opt/local/lib -DIN_LIBVIRT -I /opt/local/include -L/opt/local/lib -MT libvirt_la-storage_backend_fs.lo -MD -MP -MF .deps/libvirt_la-storage_backend_fs.Tpo -c storage_backend_fs.c -fno-common -DPIC -o .libs/libvirt_la-storage_backend_fs.o storage_backend_fs.c:34:20: error: endian.h: No such file or directory storage_backend_fs.c:35:22: error: byteswap.h: No such file or directory storage_backend_fs.c:36:20: error: mntent.h: No such file or directory storage_backend_fs.c:110: error: '__BIG_ENDIAN' undeclared here (not in a function) storage_backend_fs.c:143: error: '__LITTLE_ENDIAN' undeclared here (not in a function) storage_backend_fs.c: In function 'virStorageBackendProbeFile': storage_backend_fs.c:377: warning: comparison between pointer and integer storage_backend_fs.c:394: warning: comparison between pointer and integer storage_backend_fs.c: In function 'virStorageBackendFileSystemIsMounted': storage_backend_fs.c:458: error: '_PATH_MOUNTED' undeclared (first use in this function) storage_backend_fs.c:458: error: (Each undeclared identifier is reported only once storage_backend_fs.c:458: error: for each function it appears in.) storage_backend_fs.c:458: warning: passing argument 1 of 'fopen' from incompatible pointer type storage_backend_fs.c:461: warning: format '%s' expects type 'char *', but argument 4 has type 'struct <anonymous> *' storage_backend_fs.c:465: warning: implicit declaration of function 'getmntent' storage_backend_fs.c:465: warning: nested extern declaration of 'getmntent' storage_backend_fs.c:465: warning: assignment makes pointer from integer without a cast storage_backend_fs.c:466: error: dereferencing pointer to incomplete type storage_backend_fs.c:466: error: request for member 'mnt_dir' in something not a structure or union storage_backend_fs.c:466: warning: passing argument 1 of 'strcmp' from incompatible pointer type make[2]: *** [libvirt_la-storage_backend_fs.lo] Error 1 make[1]: *** [all-recursive] Error 1 make: *** [all] Error 2 endian.h does exist on OS X, but under a bits directory, but byteswap.h and mntent.h don't exist at all on the default X-Code install. Any ideas? - Pat

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[Libvir] virsh list
by John Levon 04 Mar '08

04 Mar '08

Am I the only one who finds the default behaviour of virsh list really confusing and annoying? That is, I would like --all to be the default. regards john

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[Libvir] Any API available for renaming the guest OS
by Ajishrao.r 04 Mar '08

04 Mar '08

Hi, I couldn't direct API to rename Guest OS? -- Thanks&Regards Ajeesh

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[Libvir] a couple of questions -Newbie
by Spencer Parker 03 Mar '08

03 Mar '08

I am really excited to start using this, but I have a couple of questions about how to use it exactly. I want to be able to pull a list of stats out of my Xen machines. I need to get something like network i/o. I just need to know how much in and out traffic that a specific machine is doing. I am pretty new to python and to programming in general. I have looked at the APi and stuff like that, but am a little confused still on how to actually do this. Mainly I just need to know how to connect to certain things. Once I have a basic understanding of what is going on then I can take it from there. Thanks for all the help! Spencer Parker

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[Libvir] API Question...
by Spencer Parker 03 Mar '08

03 Mar '08

Okay...so I am still trying to get what this says I can get. But I want to do it with Python. I am looking at this: virDomainInterfaceStatsStruct and wondering if I can grab this info with Python or not. I looked at the libvirt module, but I don't see how I would grab this. Any ideas?

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[Libvir] [PATCH] Avoid segfault upon early libvirtd failure.
by Jim Meyering 03 Mar '08

03 Mar '08

One of today's leak-plugging patches introduced a bug. Fortunately, it can strike only when libvirtd is about to fail anyway. The consequence is that instead of failing in an orderly manner, it would probably segfault. Sorry about that. Here's the fix: Avoid segfault upon early libvirtd failure. * qemud/qemud.c (main): Don't call qemudCleanup on an uninitialized pointer. By the way, even though this evoked a warning from gcc, "make distcheck" passes. Obviously, that means the distcheck rule is inadequate. I'll fix it so that it turns on -Werror for the final build. Signed-off-by: Jim Meyering <meyering(a)redhat.com> --- qemud/qemud.c | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-) diff --git a/qemud/qemud.c b/qemud/qemud.c index 96fdf32..b6b82ed 100644 --- a/qemud/qemud.c +++ b/qemud/qemud.c @@ -2025,7 +2025,7 @@ libvirt management daemon:\n\ #define MAX_LISTEN 5 int main(int argc, char **argv) { - struct qemud_server *server; + struct qemud_server *server = NULL; struct sigaction sig_action; int sigpipe[2]; const char *pid_file = NULL; @@ -2180,7 +2180,8 @@ int main(int argc, char **argv) { unlink (pid_file); error1: - qemudCleanup(server); + if (server) + qemudCleanup(server); return ret; } -- 1.5.4.3.366.g55277

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[Libvir] Need more information on virDomainBlockStats, virDomainInterfaceStats and virNodeGetCellsFreeMemory
by Ajishrao.r 03 Mar '08

03 Mar '08

Hi, I am trying to use libvirt, any one please help more about virDomainBlockStats, virDomainInterfaceStats and virNodeGetCellsFreeMemory any pointer or docs? -- Thanks&Regards Ajeesh

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[Libvir] (no subject)
by Pat Wendorf 03 Mar '08

03 Mar '08

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[Libvir] [PATCH]Change MAC address to case insensitive
by S.Sakamoto 03 Mar '08

03 Mar '08

Hi, xenXMDomainAttachDevice and xenXMDomainDetachDevice treats "case sensitve" for MAC address of stopping domain. This patch changes from case sensitive to case insensitive. Thanks, Shigeki Sakamoto. Index: src/xm_internal.c =================================================================== RCS file: /data/cvs/libvirt/src/xm_internal.c,v retrieving revision 1.64 diff -u -p -r1.64 xm_internal.c --- src/xm_internal.c 20 Feb 2008 15:29:13 -0000 1.64 +++ src/xm_internal.c 26 Feb 2008 06:40:57 -0000 @@ -2812,7 +2812,7 @@ xenXMAttachInterface(virDomainPtr domain key = nextkey; } - if (!(strcmp(dommac, (const char *) mac))) { + if (!(strcasecmp(dommac, (const char *) mac))) { if (autoassign) { free(mac); mac = NULL; @@ -3087,7 +3087,7 @@ xenXMDomainDetachDevice(virDomainPtr dom mac = nextmac; } - if (!(strcmp(dommac, (const char *) key))) + if (!(strcasecmp(dommac, (const char *) key))) break; } skip:

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