[libvirt] [PATCH] Fix size reporting for disk pools without partitions
by Cole Robinson
The attached patch updates parthelper to print size
information for a disk device if it doesn't have any
allocated partitions.
The current code starts by requesting the first partition,
then iterating from there. But if there is no first
partition, that whole info reporting thing never happens :)
Seems to produce desired results for partitioned and
unpartitioned devices.
Thanks,
Cole
16 years, 3 months
[libvirt] Question about html file in docs
by Atsushi SAKAI
Hi,
I think html files in docs directory are redundunt.
It is because html file is created by html.in.
May I remove these files?
Or are there any reason about staying these files?
Thanks
Atsushi SAKAI
16 years, 3 months
[libvirt] qemud/.libs/libvirtd?
by Jun Koi
Hi,
I added some new code to libvirt.c, and recompile. However, when "make
install". qemud/.libs/libvirtd is installed but not qemud/libvirtd.
Why? Looks like a bug?
The problem is that qemud/libvirtd has my new code, but not
qemud/.libs/libvirtd! So "make install" installs the old binary, which
I dont know where it is from. (Perhaps from the first compilation?)
I am not familiar with the autoconf Makefile, and cannot figure it out
why it is working this way.
Many thanks,
Jun
16 years, 3 months
[libvirt] On shutdown Destroy/Delete
by Stefan de Konink
Hi,
I would really like to know how I can make a defined domain *gone* after
shutdown :) (instead of it still be defined, after shutdown)
Stefan
16 years, 3 months
[libvirt] Use existing QEMU image with libvirt?
by Jun Koi
Hi,
I have some existing QEMU images. Now I want to use it with
libvirt/virsh. Is there any easy way to do that?
I suppose that we need an XML file for each image, but dont want to
craft them from scratch.
Thanks,
Jun
16 years, 3 months
[libvirt] PATCH: Improve some remote driver error messages
by Daniel P. Berrange
Bug reports from users have shown diagnosing problems with the remote
driver are quite tricky, so I've been looking at improving its error
messages where possible. There's a number of places where we simply
pass in strerror(errno) as the only data in virRaiseError. This doesn't
let us narrow down just which call failed - we just get a generic message
"Permission denied" or "Connection refused" with no clue what was being
tried.
This patch adds descriptive error messages whereever possible, fixes a
place where we'd report an error to connect to IPv4 even if IPv6
succeeded, and adds some missing translations
Before
$ virsh --connect qemu:///system
libvir: Remote error : Permission denied
$ virsh --connect qemu+tcp:///system
libvir: Remote error : Connection refused
$ virsh --connect qemu+tcp://wibble/system
libvir: Remote error : invalid argument in Name or service not known
After
$ ./src/virsh --connect qemu:///system
libvir: Remote error : unable to connect to '/var/run/libvirt/libvirt-sock': Permission denied
$ ./src/virsh --connect qemu+tcp:///system
libvir: Remote error : unable to connect to 'localhost': Connection refused
$ ./src/virsh --connect qemu+tcp://wibble/system
libvir: Remote error : unable to resolve hostname 'wibble': Name or service not known
Daniel
Index: src/remote_internal.c
===================================================================
RCS file: /data/cvs/libvirt/src/remote_internal.c,v
retrieving revision 1.80
diff -u -r1.80 remote_internal.c
--- src/remote_internal.c 26 Jun 2008 09:37:51 -0000 1.80
+++ src/remote_internal.c 19 Aug 2008 10:36:32 -0000
@@ -371,13 +371,12 @@
priv->hostname = strdup (uri->server ? uri->server : "localhost");
- if (!priv->hostname) {
- error (NULL, VIR_ERR_NO_MEMORY, _("allocating priv->hostname"));
- goto failed;
- }
+ if (!priv->hostname)
+ goto out_of_memory;
if (uri->user) {
username = strdup (uri->user);
- if (!username) goto out_of_memory;
+ if (!username)
+ goto out_of_memory;
}
/* Get the variables from the query string.
@@ -491,12 +490,15 @@
// http://people.redhat.com/drepper/userapi-ipv6.html
struct addrinfo *res, *r;
struct addrinfo hints;
+ int saved_errno = EINVAL;
memset (&hints, 0, sizeof hints);
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = AI_ADDRCONFIG;
int e = getaddrinfo (priv->hostname, port, &hints, &res);
if (e != 0) {
- error (conn, VIR_ERR_INVALID_ARG, gai_strerror (e));
+ errorf (conn, VIR_ERR_SYSTEM_ERROR,
+ _("unable to resolve hostname '%s': %s"),
+ priv->hostname, gai_strerror (e));
goto failed;
}
@@ -516,7 +518,7 @@
priv->sock = socket (r->ai_family, SOCK_STREAM, 0);
if (priv->sock == -1) {
- error (conn, VIR_ERR_SYSTEM_ERROR, strerror (socket_errno ()));
+ saved_errno = socket_errno();
continue;
}
@@ -526,7 +528,7 @@
sizeof no_slow_start);
if (connect (priv->sock, r->ai_addr, r->ai_addrlen) == -1) {
- error (conn, VIR_ERR_SYSTEM_ERROR, strerror (socket_errno ()));
+ saved_errno = socket_errno();
close (priv->sock);
continue;
}
@@ -545,6 +547,9 @@
}
freeaddrinfo (res);
+ errorf (conn, VIR_ERR_SYSTEM_ERROR,
+ _("unable to connect to '%s': %s"),
+ priv->hostname, strerror (saved_errno));
goto failed;
tcp_connected:
@@ -563,23 +568,23 @@
uid_t uid = getuid();
if (!(pw = getpwuid(uid))) {
- error (conn, VIR_ERR_SYSTEM_ERROR, strerror (errno));
+ errorf (conn, VIR_ERR_SYSTEM_ERROR,
+ _("unable to lookup user '%d': %s"),
+ uid, strerror (errno));
goto failed;
}
if (asprintf (&sockname, "@%s" LIBVIRTD_USER_UNIX_SOCKET, pw->pw_dir) < 0) {
- error (conn, VIR_ERR_SYSTEM_ERROR, strerror (errno));
- goto failed;
+ sockname = NULL;
+ goto out_of_memory;
}
} else {
if (flags & VIR_DRV_OPEN_REMOTE_RO)
sockname = strdup (LIBVIRTD_PRIV_UNIX_SOCKET_RO);
else
sockname = strdup (LIBVIRTD_PRIV_UNIX_SOCKET);
- if (sockname == NULL) {
- error (conn, VIR_ERR_SYSTEM_ERROR, strerror (errno));
- goto failed;
- }
+ if (sockname == NULL)
+ goto out_of_memory;
}
}
@@ -598,7 +603,9 @@
autostart_retry:
priv->sock = socket (AF_UNIX, SOCK_STREAM, 0);
if (priv->sock == -1) {
- error (conn, VIR_ERR_SYSTEM_ERROR, strerror (errno));
+ errorf (conn, VIR_ERR_SYSTEM_ERROR,
+ _("unable to create socket %s"),
+ strerror (errno));
goto failed;
}
if (connect (priv->sock, (struct sockaddr *) &addr, sizeof addr) == -1) {
@@ -620,7 +627,9 @@
goto autostart_retry;
}
}
- error (conn, VIR_ERR_SYSTEM_ERROR, strerror (errno));
+ errorf (conn, VIR_ERR_SYSTEM_ERROR,
+ _("unable to connect to '%s': %s"),
+ sockname, strerror (errno));
goto failed;
}
@@ -634,17 +643,13 @@
if (no_tty) nr_args += 5; /* For -T -o BatchMode=yes -e none */
command = command ? : strdup ("ssh");
- if (command == NULL) {
- error (conn, VIR_ERR_SYSTEM_ERROR, strerror (errno));
- goto failed;
- }
+ if (command == NULL)
+ goto out_of_memory;
// Generate the final command argv[] array.
// ssh -p $port [-l $username] $hostname $netcat -U $sockname [NULL]
- if (VIR_ALLOC_N(cmd_argv, nr_args) < 0) {
- error (conn, VIR_ERR_SYSTEM_ERROR, strerror (errno));
- goto failed;
- }
+ if (VIR_ALLOC_N(cmd_argv, nr_args) < 0)
+ goto out_of_memory;
j = 0;
cmd_argv[j++] = strdup (command);
@@ -667,12 +672,9 @@
cmd_argv[j++] = strdup (sockname ? sockname : LIBVIRTD_PRIV_UNIX_SOCKET);
cmd_argv[j++] = 0;
assert (j == nr_args);
- for (j = 0; j < (nr_args-1); j++) {
- if (cmd_argv[j] == NULL) {
- error (conn, VIR_ERR_SYSTEM_ERROR, strerror (ENOMEM));
- goto failed;
- }
- }
+ for (j = 0; j < (nr_args-1); j++)
+ if (cmd_argv[j] == NULL)
+ goto out_of_memory;
}
/*FALLTHROUGH*/
@@ -685,28 +687,38 @@
* to faff around with two file descriptors (a la 'pipe(2)').
*/
if (socketpair (PF_UNIX, SOCK_STREAM, 0, sv) == -1) {
- error (conn, VIR_ERR_SYSTEM_ERROR, strerror (errno));
+ errorf (conn, VIR_ERR_SYSTEM_ERROR,
+ _("unable to create socket pair %s"),
+ strerror (errno));
goto failed;
}
pid = fork ();
if (pid == -1) {
- error (conn, VIR_ERR_SYSTEM_ERROR, strerror (errno));
+ errorf (conn, VIR_ERR_SYSTEM_ERROR,
+ _("unable to fork external network transport: %s"),
+ strerror (errno));
goto failed;
} else if (pid == 0) { /* Child. */
close (sv[0]);
// Connect socket (sv[1]) to stdin/stdout.
close (0);
- if (dup (sv[1]) == -1) perror ("dup");
+ if (dup (sv[1]) == -1) {
+ perror ("dup");
+ _exit(1);
+ }
close (1);
- if (dup (sv[1]) == -1) perror ("dup");
+ if (dup (sv[1]) == -1) {
+ perror ("dup");
+ _exit(1);
+ }
close (sv[1]);
// Run the external process.
if (!cmd_argv) {
if (VIR_ALLOC_N(cmd_argv, 2) < 0) {
- error (conn, VIR_ERR_SYSTEM_ERROR, strerror (errno));
- goto failed;
+ perror("malloc");
+ _exit(1);
}
cmd_argv[0] = command;
cmd_argv[1] = 0;
@@ -770,7 +782,7 @@
return retcode;
out_of_memory:
- error (NULL, VIR_ERR_NO_MEMORY, _("uri params"));
+ error (conn, VIR_ERR_NO_MEMORY, NULL);
failed:
/* Close the socket if we failed. */
@@ -882,10 +894,9 @@
{
struct stat sb;
if (stat(file, &sb) < 0) {
- __virRaiseError (conn, NULL, NULL, VIR_FROM_REMOTE, VIR_ERR_RPC,
- VIR_ERR_ERROR, LIBVIRT_CACERT, NULL, NULL, 0, 0,
- _("Cannot access %s '%s': %s (%d)"),
- type, file, strerror(errno), errno);
+ errorf(conn, VIR_ERR_RPC,
+ _("Cannot access %s '%s': %s (%d)"),
+ type, file, strerror(errno), errno);
return -1;
}
return 0;
@@ -905,7 +916,9 @@
/* X509 stuff */
err = gnutls_certificate_allocate_credentials (&x509_cred);
if (err) {
- error (conn, VIR_ERR_GNUTLS_ERROR, gnutls_strerror (err));
+ errorf (conn, VIR_ERR_GNUTLS_ERROR,
+ _("unable to allocate TLS credentials: %s"),
+ gnutls_strerror (err));
return -1;
}
@@ -923,7 +936,9 @@
gnutls_certificate_set_x509_trust_file (x509_cred, LIBVIRT_CACERT,
GNUTLS_X509_FMT_PEM);
if (err < 0) {
- error (conn, VIR_ERR_GNUTLS_ERROR, gnutls_strerror (err));
+ errorf (conn, VIR_ERR_GNUTLS_ERROR,
+ _("unable to load CA certificate: %s"),
+ gnutls_strerror (err));
return -1;
}
@@ -936,7 +951,9 @@
LIBVIRT_CLIENTKEY,
GNUTLS_X509_FMT_PEM);
if (err < 0) {
- error (conn, VIR_ERR_GNUTLS_ERROR, gnutls_strerror (err));
+ errorf (conn, VIR_ERR_GNUTLS_ERROR,
+ _("unable to load private key/certificate: %s"),
+ gnutls_strerror (err));
return -1;
}
@@ -963,21 +980,27 @@
*/
err = gnutls_init (&session, GNUTLS_CLIENT);
if (err) {
- error (conn, VIR_ERR_GNUTLS_ERROR, gnutls_strerror (err));
+ errorf (conn, VIR_ERR_GNUTLS_ERROR,
+ _("unable to initialize TLS client: %s"),
+ gnutls_strerror (err));
return NULL;
}
/* Use default priorities */
err = gnutls_set_default_priority (session);
if (err) {
- error (conn, VIR_ERR_GNUTLS_ERROR, gnutls_strerror (err));
+ errorf (conn, VIR_ERR_GNUTLS_ERROR,
+ _("unable to set TLS algorithm priority: %s"),
+ gnutls_strerror (err));
return NULL;
}
err =
gnutls_certificate_type_set_priority (session,
cert_type_priority);
if (err) {
- error (conn, VIR_ERR_GNUTLS_ERROR, gnutls_strerror (err));
+ errorf (conn, VIR_ERR_GNUTLS_ERROR,
+ _("unable to set certificate priority: %s"),
+ gnutls_strerror (err));
return NULL;
}
@@ -985,7 +1008,9 @@
*/
err = gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, x509_cred);
if (err) {
- error (conn, VIR_ERR_GNUTLS_ERROR, gnutls_strerror (err));
+ errorf (conn, VIR_ERR_GNUTLS_ERROR,
+ _("unable to set session credentials: %s"),
+ gnutls_strerror (err));
return NULL;
}
@@ -998,7 +1023,9 @@
if (err < 0) {
if (err == GNUTLS_E_AGAIN || err == GNUTLS_E_INTERRUPTED)
goto again;
- error (conn, VIR_ERR_GNUTLS_ERROR, gnutls_strerror (err));
+ errorf (conn, VIR_ERR_GNUTLS_ERROR,
+ _("unable to complete TLS handshake: %s"),
+ gnutls_strerror (err));
return NULL;
}
@@ -1018,12 +1045,14 @@
if (len < 0 && len != GNUTLS_E_UNEXPECTED_PACKET_LENGTH) {
if (len == GNUTLS_E_AGAIN || len == GNUTLS_E_INTERRUPTED)
goto again_2;
- error (conn, VIR_ERR_GNUTLS_ERROR, gnutls_strerror (len));
+ errorf (conn, VIR_ERR_GNUTLS_ERROR,
+ _("unable to complete TLS initialization: %s"),
+ gnutls_strerror (len));
return NULL;
}
if (len != 1 || buf[0] != '\1') {
error (conn, VIR_ERR_RPC,
- _("server verification (of our certificate or IP address) failed\n"));
+ _("server verification (of our certificate or IP address) failed\n"));
return NULL;
}
@@ -1047,33 +1076,39 @@
time_t now;
if ((ret = gnutls_certificate_verify_peers2 (session, &status)) < 0) {
- error (conn, VIR_ERR_GNUTLS_ERROR, gnutls_strerror (ret));
+ errorf (conn, VIR_ERR_GNUTLS_ERROR,
+ _("unable to verify server certificate: %s"),
+ gnutls_strerror (ret));
return -1;
}
if ((now = time(NULL)) == ((time_t)-1)) {
- error (conn, VIR_ERR_SYSTEM_ERROR, strerror (errno));
+ errorf (conn, VIR_ERR_SYSTEM_ERROR,
+ _("cannot get current time: %s"),
+ strerror (errno));
return -1;
}
if (status != 0) {
- const char *reason = "Invalid certificate";
+ const char *reason = _("Invalid certificate");
if (status & GNUTLS_CERT_INVALID)
- reason = "The certificate is not trusted.";
+ reason = _("The certificate is not trusted.");
if (status & GNUTLS_CERT_SIGNER_NOT_FOUND)
- reason = "The certificate hasn't got a known issuer.";
+ reason = _("The certificate hasn't got a known issuer.");
if (status & GNUTLS_CERT_REVOKED)
- reason = "The certificate has been revoked.";
+ reason = _("The certificate has been revoked.");
#ifndef GNUTLS_1_0_COMPAT
if (status & GNUTLS_CERT_INSECURE_ALGORITHM)
- reason = "The certificate uses an insecure algorithm";
+ reason = _("The certificate uses an insecure algorithm");
#endif
- error (conn, VIR_ERR_RPC, reason);
+ errorf (conn, VIR_ERR_RPC,
+ _("server certificate failed validation: %s"),
+ reason);
return -1;
}
@@ -1092,13 +1127,17 @@
ret = gnutls_x509_crt_init (&cert);
if (ret < 0) {
- error (conn, VIR_ERR_GNUTLS_ERROR, gnutls_strerror (ret));
+ errorf (conn, VIR_ERR_GNUTLS_ERROR,
+ _("unable to initialize certificate: %s"),
+ gnutls_strerror (ret));
return -1;
}
ret = gnutls_x509_crt_import (cert, &certs[i], GNUTLS_X509_FMT_DER);
if (ret < 0) {
- error (conn, VIR_ERR_GNUTLS_ERROR, gnutls_strerror (ret));
+ errorf (conn, VIR_ERR_GNUTLS_ERROR,
+ _("unable to import certificate: %s"),
+ gnutls_strerror (ret));
gnutls_x509_crt_deinit (cert);
return -1;
}
@@ -1117,13 +1156,9 @@
if (i == 0) {
if (!gnutls_x509_crt_check_hostname (cert, priv->hostname)) {
- __virRaiseError
- (conn, NULL, NULL,
- VIR_FROM_REMOTE, VIR_ERR_RPC,
- VIR_ERR_ERROR, priv->hostname, NULL, NULL,
- 0, 0,
- _("Certificate's owner does not match the hostname (%s)"),
- priv->hostname);
+ errorf(conn, VIR_ERR_RPC,
+ _("Certificate's owner does not match the hostname (%s)"),
+ priv->hostname);
gnutls_x509_crt_deinit (cert);
return -1;
}
@@ -4721,8 +4756,9 @@
errmsg = __virErrorMsg (code, errorMessage);
__virRaiseError (conn, NULL, NULL, VIR_FROM_REMOTE,
- code, VIR_ERR_ERROR, NULL, NULL, NULL, 0, 0,
- "%s", errmsg);
+ code, VIR_ERR_ERROR,
+ errmsg, errorMessage, NULL, -1, -1,
+ errmsg, errorMessage);
}
/* For errors generated on the server side and sent back to us. */
--
|: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :|
|: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :|
|: http://autobuild.org -o- http://search.cpan.org/~danberr/ :|
|: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|
16 years, 3 months
[libvirt] PATCH: Ensure errors are guarenteed reported in virConnectOpen
by Daniel P. Berrange
The virConnectOpen method is unfortuantely rather special. While there is
a virConnect object available, the current rule is that drivers must report
errors against the global error object, because upon failure no virConnect
object will be returned to the caller. Unforatunately, despite frequent
cleanups of code getting this wrong, I've just audited the remote driver
and found another 20 or so places where its wrong. This is clearly not a
sustainable approach to error reporting.
The guarenteed correct solution is actually rather simple
- Always report errors against the virConnect object, even in the driver
open method
- In the cleanup patch of do_open() in libvirt.c, if no global error is
set, copy the error from the virConnect object's virError, into the
global virError.
With this in place we can change all the drivers back to always report
against the error object, and thus cleanup some disgusting code like
__virRaiseError (in_open ? NULL : conn, ...
To just
__virRaiseError (conn, ...
Daniel
Index: src/libvirt.c
===================================================================
RCS file: /data/cvs/libvirt/src/libvirt.c,v
retrieving revision 1.151
diff -u -r1.151 libvirt.c
--- src/libvirt.c 18 Aug 2008 09:24:46 -0000 1.151
+++ src/libvirt.c 19 Aug 2008 10:29:51 -0000
@@ -735,10 +735,8 @@
name = "xen:///";
ret = virGetConnect();
- if (ret == NULL) {
- virLibConnError(NULL, VIR_ERR_NO_MEMORY, _("allocating connection"));
+ if (ret == NULL)
return NULL;
- }
uri = xmlParseURI (name);
if (!uri) {
@@ -839,7 +837,21 @@
failed:
if (ret->driver) ret->driver->close (ret);
if (uri) xmlFreeURI(uri);
- virUnrefConnect(ret);
+
+ /* If not global error was set, copy any error set
+ in the connection object we're about to dispose of */
+ if (__lastErr.code == VIR_ERR_OK) {
+ memcpy(&__lastErr, &ret->err, sizeof(ret->err));
+ memset(&ret->err, 0, sizeof(ret->err));
+ }
+
+ /* Still no error set, then raise a generic error */
+ if (__lastErr.code == VIR_ERR_OK)
+ virLibConnError (NULL, VIR_ERR_INTERNAL_ERROR,
+ _("unable to open connection"));
+
+ virUnrefConnect(ret);
+
return NULL;
}
--
|: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :|
|: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :|
|: http://autobuild.org -o- http://search.cpan.org/~danberr/ :|
|: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|
16 years, 3 months
[libvirt] Libvirt XML description
by Dimitrios Kalogeras
Hi to all of you,
I am trying to gather knowledge about the XML DTD of libvirt bu the
http://libvirt.org/format.html does not provide any useful info. Can you
point me somewhere else ?
Cheers,
Dimitris
--
--
Dimitrios K. Kalogeras
Electrical Engineer, Ph.D.
Network Engineer
NTUA/GR-Net Network Management Center
_____________________________________
icq: 11887484
voice: +30-210-772 1863
fax: +30-210-772 1866
e-mail: D.Kalogeras(a)noc.ntua.gr
pub 1024D/0E421B50 2007-01-17 [expires: 2008-01-17] Dimitrios
Kalogeras (dkalo) <D.Kalogeras(a)noc.ntua.gr>
Key fingerprint = F8C8 7B67 74A4 1F82 CDDF 8554 E1EF 7FAE 0E42 1B50
PGP-KEY: http://ajax.noc.ntua.gr/~dkalo/dkalo_pgp.txt
16 years, 3 months
[libvirt] fail to connect via ssh
by MINAI Katsuhito
Hi all,
I have built libvirt by http://libvirt.org/sources/libvirt-0.4.4.tar.gz
on fedora 9 as follows.
$ tar zxf libvirt-cvs-snapshot.tar.gz
$ cd libvirt-0.4.4
$ ./configure --without-xen
$ make
However, virsh failed to connect via SSH to remote server.
How can I fix the problem?
$ ./src/virsh -c xen+ssh://root@server list
root@server's password:
libvir: Remote error : socket closed unexpectedly
error: failed to connect to the hypervisor
Thanks,
Minai
16 years, 3 months
