October 2015 - Devel - libvirt List Archives

[libvirt] [PATCH 1/3] vz: implement connectGetType and connectGetMaxVcpus API calls
by Maxim Nestratov 19 Oct '15

19 Oct '15

From: Maxim Nestratov <mnestratov(a)virtuozzo.com> As a connection type we report 'vz'. And because we have no limitation for maximal number of vcpus in containers we report as maximum 1028 just for the sake of common sence. Signed-off-by: Maxim Nestratov <mnestratov(a)virtuozzo.com> --- src/vz/vz_driver.c | 19 +++++++++++++++++++ 1 files changed, 19 insertions(+), 0 deletions(-) diff --git a/src/vz/vz_driver.c b/src/vz/vz_driver.c index 15dc70f..3cd6096 100644 --- a/src/vz/vz_driver.c +++ b/src/vz/vz_driver.c @@ -1337,12 +1337,31 @@ vzDomainMemoryStats(virDomainPtr domain, return ret; } +static int vzConnectGetMaxVcpus(virConnectPtr conn ATTRIBUTE_UNUSED, + const char *type) +{ + /* As far as we have no limitation for containers + * we report maximum */ + if (type == NULL || STRCASEEQ(type, "vz")) + return 1028; + + virReportError(VIR_ERR_INVALID_ARG, + _("unknown type '%s'"), type); + return -1; +} + +static const char *vzConnectGetType(virConnectPtr conn ATTRIBUTE_UNUSED) { + return "vz"; +} + static virHypervisorDriver vzDriver = { .name = "vz", .connectOpen = vzConnectOpen, /* 0.10.0 */ .connectClose = vzConnectClose, /* 0.10.0 */ .connectGetVersion = vzConnectGetVersion, /* 0.10.0 */ .connectGetHostname = vzConnectGetHostname, /* 0.10.0 */ + .connectGetType = vzConnectGetType, /* 1.2.21 */ + .connectGetMaxVcpus = vzConnectGetMaxVcpus, /* 1.2.21 */ .nodeGetInfo = vzNodeGetInfo, /* 0.10.0 */ .connectGetCapabilities = vzConnectGetCapabilities, /* 0.10.0 */ .connectBaselineCPU = vzConnectBaselineCPU, /* 1.2.6 */ -- 1.7.1

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[libvirt] [PATCHv3 0/2] Added waiting for DAD to finish for bridge address.
by Maxim Perevedentsev 19 Oct '15

19 Oct '15

This is a fix for commit db488c79173b240459c7754f38c3c6af9b432970 dnsmasq main process which is relied on when waiting for DAD to complete exits without actually waiting for DAD. This is dnsmasq daemon's task. It seems to be a race that DAD finished before dnsmasq main process exited. The above commit needs the execution to block until DAD finishes for bridge IPv6 address because then it closes dummy tap device. Thus we need to ensure this ourselves. So we periodically poll the kernel using netlink and check whether there are any IPv6 addresses assigned to bridge which have 'tentative' state. After DAD is finished, execution continues. I guess that is what dnsmasq was assumed to do. We use netlink to dump information about existing IPv6 addresses. Netlink's response is a multi-part message. Unfortunately, the current implementation of virNetlink treats such messages as faulty and throws an error. So the patch 2/2 adds multi-part nelink response support. Update v2: fixed syntax. Update v3: moved to virnetdev. Resend: These patches were ignored and buried long ago :-( Maxim Perevedentsev (2): network: added waiting for DAD to finish for bridge address. netlink: add support for multi-part netlink messages. src/libvirt_private.syms | 1 + src/network/bridge_driver.c | 35 +++++++++- src/util/virnetdev.c | 160 ++++++++++++++++++++++++++++++++++++++++++++ src/util/virnetdev.h | 2 + src/util/virnetlink.c | 4 +- 5 files changed, 200 insertions(+), 2 deletions(-) -- 1.8.3.1

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[libvirt] [PATCH v1 00/23] Keep original seclabel
by Michal Privoznik 19 Oct '15

19 Oct '15

So, you may be familiar with this already. Well, I've tried to get these patches in like a year ago (or even more). Point is, these ones are new, written from scratch. However, still based on idea, that virtlockd will keep the track of the original seclabels. So far only DAC driver is fixed, but the infrastructure I'm proposing here is easily extensible to other drivers too. Even if there's some disagreement on the design, the first few patches fix some bugs, so they should make it in. Michal Privoznik (23): virtlockd: Don't SIGSEGV on SIGUSR1 security_dac: Fix TODO marks virSecurityDACSetOwnershipInternal: Don't chown so often security_dac: Introduce remember/recall stubs virSecurityDACSetOwnership: Pass virSecurityDACDataPtr virSecurityDACRestoreSecurityFileLabel: Pass virSecurityDACDataPtr security_dac: Limit usage of virSecurityDACSetOwnershipInternal security_dac: Plug in remember/recall APIs lock_protocol: Add two new remote procedures lock_daemon: Switch to wrapper locking functions locking: Introduce virSeclabelSpace virtlockd: Work virSeclabelSpace in virLockDriver: Introduce virLockDriverRemember and virLockDriverRecall lock_driver_nop: Implement remember and recall APIs lock_driver_lockd: Implement remember and recall APIs lock_manager: Implement remember & recall APIs locking: Favour enum type over int lock_driver: Introduce VIR_LOCK_MANAGER_OBJECT_TYPE_SECLABEL virSecurityManagerNewDAC: Pass locking plugin in security_dac: Remember security labels security_dac: Restore original owner more often security: Introduce virSecurityManagerDomainRestoreDirLabel qemuProcessStop: Restore seclabels on dirs too cfg.mk | 2 +- po/POTFILES.in | 1 + src/Makefile.am | 3 + src/libvirt_private.syms | 3 + src/lock_protocol-structs | 15 + src/locking/lock_daemon.c | 69 ++++- src/locking/lock_daemon.h | 8 + src/locking/lock_daemon_dispatch.c | 68 +++++ src/locking/lock_daemon_seclabels.c | 545 ++++++++++++++++++++++++++++++++++++ src/locking/lock_daemon_seclabels.h | 43 +++ src/locking/lock_driver.h | 42 ++- src/locking/lock_driver_lockd.c | 103 ++++++- src/locking/lock_driver_nop.c | 28 +- src/locking/lock_driver_sanlock.c | 4 +- src/locking/lock_manager.c | 36 ++- src/locking/lock_manager.h | 13 +- src/locking/lock_protocol.x | 29 +- src/qemu/qemu_driver.c | 3 +- src/qemu/qemu_process.c | 22 +- src/security/security_dac.c | 288 +++++++++++++++---- src/security/security_dac.h | 2 + src/security/security_driver.h | 5 +- src/security/security_manager.c | 20 +- src/security/security_manager.h | 7 +- src/security/security_selinux.c | 16 ++ src/security/security_stack.c | 20 ++ 26 files changed, 1310 insertions(+), 85 deletions(-) create mode 100644 src/locking/lock_daemon_seclabels.c create mode 100644 src/locking/lock_daemon_seclabels.h -- 2.4.9

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[libvirt] Need help problem with libvirt
by suresh knv 19 Oct '15

19 Oct '15

Hi, I am trying to install libvirt 1.2.2 on arm64 board with xen. It got installed successfully but when i run the command virsh list --all it is taking too long time and not responding application hangs. When I tried with strace virsh list --all these are the last few lines of the log futex(0x7fae646c48, FUTEX_WAKE_PRIVATE, 2147483647) = 0 gettid() = 8589 gettid() = 8589 gettid() = 8589 gettid() = 8589 gettid() = 8589 gettid() = 8589 gettid() = 8589 gettid() = 8589 gettid() = 8589 gettid() = 8589 gettid() = 8589 gettid() = 8589 gettid() = 8589 gettid() = 8589 gettid() = 8589 write(5, "\0", 1) = 1 futex(0x7fae5e56d0, FUTEX_WAKE_PRIVATE, 1) = 1 rt_sigprocmask(SIG_BLOCK, [PIPE CHLD WINCH], [], 8) = 0 ppoll([{fd=6, events=POLLOUT}, {fd=7, events=POLLIN}], 2, NULL, NULL, 0) = 1 ([{fd=6, revents=POLLOUT}]) rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 write(6, "\0\0\0\34 \0\200\206\0\0\0\1\0\0\0B\0\0\0\0\0\0\0\0\0\0\0\0", 28) = 28 rt_sigprocmask(SIG_BLOCK, [PIPE CHLD WINCH], [], 8) = 0 ppoll([{fd=6, events=POLLIN}, {fd=7, events=POLLIN}], 2, NULL, NULL, 0 I am attaching the complete log with the mail. Can anyone suggest what is going wrong? Thanks Suresh KN V

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[libvirt] [PATCH 0/9] Introduce virt-admin client
by Erik Skultety 16 Oct '15

16 Oct '15

Erik Skultety (9): libvirt: Export libvirt config getters by moving them to util virt-admin: Introduce first working skeleton admin: Do not generate remoteAdminConnect{Open,Close} admin: Add support for connection close callbacks admin: Introduce virAdmConnectGetLibVersion admin: Add URI support and introduce virAdmGetDefaultURI virt-admin: Introduce vshAdmCatchDisconnect handler virt-admin: Register async IO event polling virt-admin: Provide a man page for virt-admin .gitignore | 1 + daemon/admin_server.c | 9 + daemon/libvirtd.c | 3 +- include/libvirt/libvirt-admin.h | 25 ++ po/POTFILES.in | 2 + src/admin/admin_protocol.x | 15 +- src/datatypes.c | 24 ++ src/datatypes.h | 15 +- src/libvirt-admin.c | 387 ++++++++++++++++++-- src/libvirt.c | 55 +-- src/libvirt_admin_private.syms | 1 + src/libvirt_admin_public.syms | 5 + src/libvirt_private.syms | 2 +- src/rpc/gendispatch.pl | 11 +- src/util/virconf.c | 52 +++ src/util/virconf.h | 2 +- tools/Makefile.am | 36 +- tools/virt-admin.c | 759 ++++++++++++++++++++++++++++++++++++++++ tools/virt-admin.h | 71 ++++ tools/virt-admin.pod | 297 ++++++++++++++++ 20 files changed, 1675 insertions(+), 97 deletions(-) create mode 100644 tools/virt-admin.c create mode 100644 tools/virt-admin.h create mode 100644 tools/virt-admin.pod -- 2.4.3

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[libvirt] [PATCH v3] Close the source fd if the destination qemu exits during tunnelled migration
by Shivaprasad G Bhat 16 Oct '15

16 Oct '15

Tunnelled migration can hang if the destination qemu exits despite all the ABI checks. This happens whenever the destination qemu exits before the complete transfer is noticed by source qemu. The savevm state checks at runtime can fail at destination and cause qemu to error out. The source qemu cant notice it as the EPIPE is not propogated to it. The qemuMigrationIOFunc() notices the stream being broken from virStreamSend() and it cleans up the stream alone. The qemuMigrationWaitForCompletion() would never get to 100% transfer completion. The qemuMigrationWaitForCompletion() never breaks out as well since the ssh connection to destination is healthy, and the source qemu also thinks the migration is ongoing as the Fd to which it transfers, is never closed or broken. So, the migration will hang forever. Even Ctrl-C on the virsh migrate wouldn't be honoured. Close the source side FD when there is an error in the stream. That way, the source qemu updates itself and qemuMigrationWaitForCompletion() notices the failure. Close the FD for all kinds of errors to be sure. The error message is not copied for EPIPE so that the destination error is copied instead later. Note: Reproducible with repeated migrations between Power hosts running in different subcores-per-core modes. Changes from v2 -> v3: VIR_FORCE_CLOSE() needn't be called on the qemu source fd as that is closed by qemuMigrationIOFunc() for tunnelled migration. Set the fd to -1. Signed-off-by: Shivaprasad G Bhat <sbhat(a)linux.vnet.ibm.com> --- src/qemu/qemu_migration.c | 18 ++++++++++++++---- 1 file changed, 14 insertions(+), 4 deletions(-) diff --git a/src/qemu/qemu_migration.c b/src/qemu/qemu_migration.c index 7440108..c982838 100644 --- a/src/qemu/qemu_migration.c +++ b/src/qemu/qemu_migration.c @@ -4019,6 +4019,7 @@ static void qemuMigrationIOFunc(void *arg) if (virStreamFinish(data->st) < 0) goto error; + VIR_FORCE_CLOSE(data->sock); VIR_FREE(buffer); return; @@ -4036,7 +4037,11 @@ static void qemuMigrationIOFunc(void *arg) } error: - virCopyLastError(&data->err); + /* Let the source qemu know that the transfer cant continue anymore. + * Don't copy the error for EPIPE as destination has the actual error. */ + VIR_FORCE_CLOSE(data->sock); + if (!virLastErrorIsSystemErrno(EPIPE)) + virCopyLastError(&data->err); virResetLastError(); VIR_FREE(buffer); } @@ -4359,9 +4364,14 @@ qemuMigrationRun(virQEMUDriverPtr driver, } } - if (spec->fwdType != MIGRATION_FWD_DIRECT && - !(iothread = qemuMigrationStartTunnel(spec->fwd.stream, fd))) - goto cancel; + if (spec->fwdType != MIGRATION_FWD_DIRECT) { + if (!(iothread = qemuMigrationStartTunnel(spec->fwd.stream, fd))) + goto cancel; + /* If we've created a tunnel, then the 'fd' will be closed in the + * qemuMigrationIOFunc as data->sock. + */ + fd = -1; + } rc = qemuMigrationWaitForCompletion(driver, vm, QEMU_ASYNC_JOB_MIGRATION_OUT,

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[libvirt] [PATCH v2 0/4] Fix a couple of iothread bugs
by John Ferlan 16 Oct '15

16 Oct '15

v1: http://www.redhat.com/archives/libvir-list/2015-October/msg00417.html Differences since v1 - many. - Reworked patches 1 & 2 to become patches 1 - 3 in the new series - Patch 1 is new, but the thinking behind patch 3 caused me to generate this patch which essentially changes comparisons with "->iothreads" to use "->niothreadids" instead except for one place where we're building the "iothreadids[]" array based on the difference between iothreads and niothreadids. - Patch 2 is essentially what former patch 1 became, adding a single check for niothreads == 0 rather than checking the capabilities bit. - The former patch 2 was dropped. In it's place is the new Patch 3 which moves the check for the capabilities bit to when the IOThread objects are added to the domain at startup time. Making that change had a couple of side effects and the whole sordid history of how we got into this situation was left in the commit message. Due to moving the check one test started failing, so that was fixed and while I was at it - I added a test which would define iothreads, some iothreadids, and some iothreadpin to show that without the capability the failure will be at start time. - The former patch 3 was already pushed since it was ACK'd - The former patch 4 logic was adjusted (more or less) to what was requested during the review with a couple of tweaks based on the realities I found during testing. NB: I spent some cycles considering how to handle the case where a domain with iothreads/niothreadids > 0 was already running when libvirtd was restarted and how to handle that. In the end I decided upon trying to do the somewhat nice thing and remove all traces and if some domain had iothreadid's defined, then leave a VIR_INFO message indicating the removal. Without this change, then qemuDomainPinIOThread for the live code will need some kind of adjustment in order to handle the case where the capability doesn't exist (some sort of thread_id == 0 check right after the IOThreadIDFind succeeds). John Ferlan (4): qemu: Use 'niothreadids' instead of 'iothreads' qemu: Check for niothreads == 0 in qemuSetupCgroupForIOThreads qemu: Fix qemu startup check for QEMU_CAPS_OBJECT_IOTHREAD conf: Optimize the iothreadid initialization src/conf/domain_audit.c | 4 +- src/conf/domain_conf.c | 43 +++++++++++++++++----- src/qemu/qemu_cgroup.c | 3 ++ src/qemu/qemu_command.c | 19 ++++------ src/qemu/qemu_driver.c | 16 ++++---- src/qemu/qemu_process.c | 32 ++++++++++++++-- .../qemuxml2argv-cputune-numatune.args | 1 + .../qemuxml2argv-iothreads-nocap.xml | 37 +++++++++++++++++++ tests/qemuxml2argvtest.c | 2 + 9 files changed, 122 insertions(+), 35 deletions(-) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-iothreads-nocap.xml -- 2.1.0

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[libvirt] [PATCH] virsh: Use 'format' argument only when specified
by Peter Krempa 16 Oct '15

16 Oct '15

The condition checking whether --format was specified was incorrect. virsh crashed if the following format was used: virsh dump VM dump --format '' --memory-only Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1272301 --- tools/virsh-domain.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/virsh-domain.c b/tools/virsh-domain.c index 456e273..4191548 100644 --- a/tools/virsh-domain.c +++ b/tools/virsh-domain.c @@ -5280,7 +5280,7 @@ doDump(void *opaque) goto out; } - if (vshCommandOptString(ctl, cmd, "format", &format)) { + if (vshCommandOptString(ctl, cmd, "format", &format) > 0) { if (STREQ(format, "kdump-zlib")) { dumpformat = VIR_DOMAIN_CORE_DUMP_FORMAT_KDUMP_ZLIB; } else if (STREQ(format, "kdump-lzo")) { -- 2.4.5

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[libvirt] [PATCH] docs: event impl. registration before hypervisor connection
by Dominik Perpeet 15 Oct '15

15 Oct '15

Event implementations need to be registered before a connection to the Hypervisor is opened, otherwise event handling can be impaired (e.g. delayed messages). This fact is referenced in an e-mail [1], but should also be noted in the documentation of the registration functions. [1] https://www.redhat.com/archives/libvirt-users/2014-April/msg00011.html --- src/util/virevent.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/src/util/virevent.c b/src/util/virevent.c index 54b6396..e0fd35e 100644 --- a/src/util/virevent.c +++ b/src/util/virevent.c @@ -204,6 +204,9 @@ virEventRemoveTimeout(int timer) * to integrate with the libglib2 event loop, or libevent * or the QT event loop. * + * For proper event handling, it is important that the event implementation + * is registered before a connection to the Hypervisor is opened. + * * Use of the virEventAddHandle() and similar APIs require that the * corresponding handler is registered. Use of the * virConnectDomainEventRegisterAny() and similar APIs requires that @@ -247,6 +250,9 @@ void virEventRegisterImpl(virEventAddHandleFunc addHandle, * not have a need to integrate with an external event * loop impl. * + * For proper event handling, it is important that the event implementation + * is registered before a connection to the Hypervisor is opened. + * * Once registered, the application has to invoke virEventRunDefaultImpl() in * a loop to process events. Failure to do so may result in connections being * closed unexpectedly as a result of keepalive timeout. The default -- 1.8.3.1

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[libvirt] Fwd: [PATCH 2/3] NEWS: Split releases by year (2012-2015)
by Eric Blake 15 Oct '15

15 Oct '15

[moderated for smaller size] -------- Forwarded Message -------- From: Andrea Bolognani <abologna(a)redhat.com> To: libvir-list(a)redhat.com Subject: [PATCH 2/3] NEWS: Split releases by year (2012-2015) Date: Thu, 15 Oct 2015 16:12:09 +0200 Message-Id: <1444918330-15696-3-git-send-email-abologna(a)redhat.com> --- docs/news-2012.html.in | 3012 ++++++++++++++ docs/news-2013.html.in | 3675 +++++++++++++++++ docs/news-2014.html.in | 3418 ++++++++++++++++ docs/news.html.in | 10052 +---------------------------------------------- 4 files changed, 10110 insertions(+), 10047 deletions(-) create mode 100644 docs/news-2012.html.in create mode 100644 docs/news-2013.html.in create mode 100644 docs/news-2014.html.in diff --git a/docs/news-2012.html.in b/docs/news-2012.html.in new file mode 100644 index 0000000..a198d3c --- /dev/null +++ b/docs/news-2012.html.in @@ -0,0 +1,3012 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> +<html xmlns="http://www.w3.org/1999/xhtml"> + <head> + <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> + </head> + <body> + <h1>Releases (2012)</h1> + <p>Here is the list of official releases made during the year 2012. + A similar list for <a href="news-2011.html">2011</a> is also available. + </p> + <p>It is also possible to just use + the <a href="downloads.html" shape="rect">GIT version or snapshot</a>, + contact the mailing list and check + the <a href="http://libvirt.org/git/?p=libvirt.git;a=log" shape="rect">GIT log</a> + to gauge progress. + </p> + + <h3>1.0.1: Dec 17 2012</h3> + <ul> + <li>Features:<br/> + Introduce virtlockd daemon (Daniel P. Berrange),<br/> [...] diff --git a/docs/news-2013.html.in b/docs/news-2013.html.in new file mode 100644 index 0000000..62b75a5 --- /dev/null +++ b/docs/news-2013.html.in @@ -0,0 +1,3675 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> +<html xmlns="http://www.w3.org/1999/xhtml"> + <head> + <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> + </head> + <body> + <h1>Releases (2013)</h1> + <p>Here is the list of official releases made during the year 2013. + A similar list for <a href="news-2012.html">2012</a> is also available. + </p> + <p>It is also possible to just use + the <a href="downloads.html" shape="rect">GIT version or snapshot</a>, + contact the mailing list and check + the <a href="http://libvirt.org/git/?p=libvirt.git;a=log" shape="rect">GIT log</a> + to gauge progress. + </p> + + <h3>1.2.0: Dec 02 2013</h3> + <ul> + <li>Features:<br/> + Add support for gluster pool (Eric Blake),<br/> [...] diff --git a/docs/news-2014.html.in b/docs/news-2014.html.in new file mode 100644 index 0000000..5480d5d --- /dev/null +++ b/docs/news-2014.html.in @@ -0,0 +1,3418 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> +<html xmlns="http://www.w3.org/1999/xhtml"> + <head> + <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> + </head> + <body> + <h1>Releases (2014)</h1> + <p>Here is the list of official releases made during the year 2014. + A similar list for <a href="news-2013.html">2013</a> is also available. + </p> + <p>It is also possible to just use + the <a href="downloads.html">GIT version or snapshot</a>, + contact the mailing list and check + the <a href="http://libvirt.org/git/?p=libvirt.git;a=log">GIT log</a> + to gauge progress. + </p> + + <h3>1.2.11: Dec 13 2014</h3> + <ul> + <li>Features:<br/> + Implement public API for virDomainGetFSInfo (Tomoki Sekiyama),<br/> [...] diff --git a/docs/news.html.in b/docs/news.html.in index 90e6ac7..3e133c2 100644 --- a/docs/news.html.in +++ b/docs/news.html.in @@ -5,8 +5,11 @@ <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> </head> <body> - <h1>Releases</h1> - <p>Here is the list of official releases, it is also possible to just use + <h1>Releases (2015)</h1> + <p>Here is the list of official releases made during the year 2015. + A similar list for <a href="news-2014.html">2014</a> is also available. + </p> + <p>It is also possible to just use the <a href="downloads.html">GIT version or snapshot</a>, contact the mailing list and check the <a href="http://libvirt.org/git/?p=libvirt.git;a=log">GIT log</a> @@ -2441,10050 +2444,5 @@ </li> </ul> - <h3>1.2.11: Dec 13 2014</h3> - <ul> - <li>Features:<br/> - Implement public API for virDomainGetFSInfo (Tomoki Sekiyama),<br/> [...] - - <h3>0.9.9: Jan 07 2012</h3> - <ul> - <li>Features:<br/> [...] - <li>Cleanups:<br/> - network_conf: Fix whitespace to pass syntax-check (Peter Krempa)<br/> - </li> - </ul> - </body> </html> -- 2.4.3

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