March 2016 - Devel - libvirt List Archives

[libvirt] [PATCH] nss: use more strict check for automatic enabling
by Roman Bogorodskiy 23 Mar '16

23 Mar '16

Currently nss plugin is automatically enabled if nss.h header exists and --without-nss-plugin is not specified. However, presence of the nss.h header does not guarantee a compatible interface, so check for struct gaih_addrtuple to make sure it's enabled only on platforms where it could be built. --- m4/virt-nss.m4 | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/m4/virt-nss.m4 b/m4/virt-nss.m4 index 3fa4ad3..bc054db 100644 --- a/m4/virt-nss.m4 +++ b/m4/virt-nss.m4 @@ -25,12 +25,14 @@ AC_DEFUN([LIBVIRT_CHECK_NSS],[ fail=0 if test "x$with_nss_plugin" != "xno" ; then - AC_CHECK_HEADERS([nss.h], [ + AC_CHECK_TYPE([struct gaih_addrtuple], [ with_nss_plugin=yes ],[ if test "x$with_nss_plugin" = "xyes" ; then fail = 1 fi + ],[ + #include <nss.h> ]) if test $fail = 1 ; then -- 2.4.6

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[libvirt] Does the proposed solution belong in KVM input devices?
by bancfc＠openmailbox.org 23 Mar '16

23 Mar '16

qemu-discuss doesn't seem the best place to reach the devs. I saw most of the work on KVM input devices was done by Gerd Hoffman and Dan Berrange. Dan do you think the QEMU virtual keyboard is the right place for a solution similar to the one described below? https://paul.reviews/behavioral-profiling-the-password-you-cant-change/ Would this be considered feature creep and best implemented in its own program?

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[libvirt] [libvirt-php 0/3] small improvements
by Vasiliy Tolstov 23 Mar '16

23 Mar '16

Add some more libvirt functions support to binding. Also add some checks to prevent malloc SIZE_MAX memory in case of errors Vasiliy Tolstov (3): add some checks to prevent overflow add block_commit support and needed const add libvirt_domain_block_job_info src/libvirt-php.c | 152 ++++++++++++++++++++++++++++++++++++++++++++++++------ src/libvirt-php.h | 2 + 2 files changed, 138 insertions(+), 16 deletions(-) -- 2.7.0

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[libvirt] [PATCH 00/12] qemu_process cleanups and test improvement
by Pavel Hrdina 22 Mar '16

22 Mar '16

The first patch is unrelated but I've found it while working on this series. Pavel Hrdina (12): qemu_process: check for correct return value while starting domain nvram: generate it's path in qemuDomainDefPostParse tests: cleanup qemuxml2argvtest qemu_process: introduce qemuProcessPrepareDomain qemu_process: introduce qemuProcessPrepareHost qemu: update callers of qemuProcessStartValidate to use virDomainObjPtr qemu_process: move checks to qemuProcessStartValidate qemu_process: move qemuDomainSetPrivatePaths to qemuProcessInit qemu_process: introduce qemuProcessCreateCmd qemu_driver: cleanup qemuConnectDomainXMLToNative qemuxml2argvtest: use driver.config and priv for qemuDomainSetPrivatePaths qemuxml2argvtest: cleanup test src/qemu/qemu_domain.c | 10 + src/qemu/qemu_driver.c | 61 +- src/qemu/qemu_migration.c | 9 +- src/qemu/qemu_process.c | 706 +++++++++++---------- src/qemu/qemu_process.h | 26 +- .../qemuxml2argv-channel-virtio-unix.xml | 2 +- tests/qemuxml2argvtest.c | 126 ++-- tests/testutilsqemu.c | 7 + 8 files changed, 494 insertions(+), 453 deletions(-) -- 2.7.2

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[libvirt] [PATCH 0/2] qemu: support SPICE+unix socket
by Cole Robinson 22 Mar '16

22 Mar '16

qemu has supported SPICE+unix socket listening since 2.3.0. Patch #1 wires it up from domain_conf.c down to qemu, patch #2 adds qemu.conf spice_auto_unix_socket option Full disclosure: this duplicates the logic of VNC socket usage, which has some pre-existing warts: - When the VM is running with graphics socket=FOO, the runtime XML still lists <listen type='address' address='127.0.0.1'/>. - If using vnc/spice auto socket, it looks like ports can still be allocated in the code, though they are never used. - In fact I suspect there's lots of issues with stray XML port/listen being parsed and ending up in the device config, but selectively being ignored later. We should probably explicitly ignore/error about those combos when parsing the XML so we never have to ignore specific values later on. - The auto socket path is set in qemu_command.c but it should probably be set in qemu_process.c with the port stuff. Though there are references to vncListen in qemu_command.c which should probably be moved as well. The issue with moving them to qemu_process.c is now there isn't any pre-existing way to test those bits like via qemuxml2argvtest for example. Though finding a way to test the graphics prep stuff would be valuable anyways - teuf suggests: converting <graphics socket=X/> to <graphics><listen type='socket' path='FOO'/></graphics> like was done with listen= address - tuef: virsh domdisplay doesn't handle sockets To avoid yet another rabbit hole I didn't touch any of the above issues, which basically means spice+unix is no less operationally worse than vnc+unix :) Cole Robinson (2): qemu: Support SPICE listen over unix socket qemu: Add qemu.conf option spice_auto_unix_socket docs/schemas/domaincommon.rng | 5 ++++ src/conf/domain_conf.c | 26 +++++++++++++-------- src/conf/domain_conf.h | 1 + src/qemu/libvirtd_qemu.aug | 1 + src/qemu/qemu.conf | 11 +++++++++ src/qemu/qemu_command.c | 15 +++++++++--- src/qemu/qemu_conf.c | 1 + src/qemu/qemu_conf.h | 1 + src/qemu/qemu_process.c | 3 +++ src/qemu/test_libvirtd_qemu.aug.in | 1 + src/security/virt-aa-helper.c | 5 ++++ .../qemuxml2argv-graphics-spice-unix-auto.args | 21 +++++++++++++++++ .../qemuxml2argv-graphics-spice-unix-auto.xml | 27 ++++++++++++++++++++++ .../qemuxml2argv-graphics-spice-unix.args | 21 +++++++++++++++++ .../qemuxml2argv-graphics-spice-unix.xml | 27 ++++++++++++++++++++++ tests/qemuxml2argvtest.c | 10 ++++++++ 16 files changed, 163 insertions(+), 13 deletions(-) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-graphics-spice-unix-auto.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-graphics-spice-unix-auto.xml create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-graphics-spice-unix.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-graphics-spice-unix.xml -- 2.5.0

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[libvirt] [PATCH v2] qemu-hotplug: fix eject media
by Pavel Hrdina 22 Mar '16

22 Mar '16

QEMU changed the error message to: "Tray of device 'drive-sata0-0-1' is not open" and they may change the error massage in the future. This updates the code to not depend on the text from the error message but only on error itself. Signed-off-by: Pavel Hrdina <phrdina(a)redhat.com> --- src/qemu/qemu_hotplug.c | 11 +++++------ src/qemu/qemu_monitor_json.c | 12 +----------- src/qemu/qemu_monitor_text.c | 5 +---- 3 files changed, 7 insertions(+), 21 deletions(-) diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c index b580283..a78bc60 100644 --- a/src/qemu/qemu_hotplug.c +++ b/src/qemu/qemu_hotplug.c @@ -202,15 +202,14 @@ qemuDomainChangeEjectableMedia(virQEMUDriverPtr driver, if (qemuDomainObjExitMonitor(driver, vm) < 0) goto cleanup; - if (rc == -2) { + if (rc < 0) { /* we've already tried, error out */ if (ejectRetry) goto error; - VIR_DEBUG("tray is locked, wait for the guest to unlock " - "the tray and try to eject it again"); + ejectRetry = true; - } else if (rc < 0) { - goto error; + VIR_DEBUG("tray may be locked, wait for the guest to unlock " + "the tray and try to eject it again"); } if (virTimeMillisNow(&now) < 0) @@ -220,7 +219,7 @@ qemuDomainChangeEjectableMedia(virQEMUDriverPtr driver, if (virDomainObjWaitUntil(vm, now + CHANGE_MEDIA_TIMEOUT) != 0) goto error; } - } while (ejectRetry && rc != 0); + } while (rc < 0); if (!virStorageSourceIsEmpty(newsrc)) { if (qemuGetDriveSourceString(newsrc, conn, &sourcestr) < 0) diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c index fe9288a..57c34f0 100644 --- a/src/qemu/qemu_monitor_json.c +++ b/src/qemu/qemu_monitor_json.c @@ -2272,8 +2272,7 @@ int qemuMonitorJSONSetCPU(qemuMonitorPtr mon, * Run QMP command to eject a media from ejectable device. * * Returns: - * -2 on error, when the tray is locked - * -1 on all other errors + * -1 on error * 0 on success */ int qemuMonitorJSONEjectMedia(qemuMonitorPtr mon, @@ -2294,15 +2293,6 @@ int qemuMonitorJSONEjectMedia(qemuMonitorPtr mon, if (ret == 0) ret = qemuMonitorJSONCheckError(cmd, reply); - if (ret < 0) { - virJSONValuePtr error = virJSONValueObjectGet(reply, "error"); - if (error) { - const char *errorStr = virJSONValueObjectGetString(error, "desc"); - if (errorStr && c_strcasestr(errorStr, "is locked")) - ret = -2; - } - } - virJSONValueFree(cmd); virJSONValueFree(reply); return ret; diff --git a/src/qemu/qemu_monitor_text.c b/src/qemu/qemu_monitor_text.c index bb87397..3129427 100644 --- a/src/qemu/qemu_monitor_text.c +++ b/src/qemu/qemu_monitor_text.c @@ -1170,8 +1170,7 @@ int qemuMonitorTextSetCPU(qemuMonitorPtr mon, int cpu, bool online) * Run HMP command to eject a media from ejectable device. * * Returns: - * -2 on error, when the tray is locked - * -1 on all other errors + * -1 on error * 0 on success */ int qemuMonitorTextEjectMedia(qemuMonitorPtr mon, @@ -1192,8 +1191,6 @@ int qemuMonitorTextEjectMedia(qemuMonitorPtr mon, * device not found, device is locked ... * No message is printed on success it seems */ if (c_strcasestr(reply, "device ")) { - if (c_strcasestr(reply, "is locked")) - ret = -2; virReportError(VIR_ERR_OPERATION_FAILED, _("could not eject media on %s: %s"), dev_name, reply); goto cleanup; -- 2.7.4

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[libvirt] [PATCH] qemu-hotplug: fix eject media
by Pavel Hrdina 22 Mar '16

22 Mar '16

QEMU changed the error message to: "Tray of device 'drive-sata0-0-1' is not open" and they may change the error massage in the future. This updates the code to not depend on the text from the error message but only on error itself. One more improvement is that we will store the original error in case if it's not about tray is not open. Signed-off-by: Pavel Hrdina <phrdina(a)redhat.com> --- src/qemu/qemu_hotplug.c | 17 +++++++++-------- src/qemu/qemu_monitor_json.c | 12 +----------- src/qemu/qemu_monitor_text.c | 5 +---- 3 files changed, 11 insertions(+), 23 deletions(-) diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c index b580283..8122367 100644 --- a/src/qemu/qemu_hotplug.c +++ b/src/qemu/qemu_hotplug.c @@ -173,8 +173,8 @@ qemuDomainChangeEjectableMedia(virQEMUDriverPtr driver, qemuDomainObjPrivatePtr priv = vm->privateData; const char *format = NULL; char *sourcestr = NULL; - bool ejectRetry = false; unsigned long long now; + virErrorPtr ejectError = NULL; if (!disk->info.alias) { virReportError(VIR_ERR_INTERNAL_ERROR, @@ -202,15 +202,16 @@ qemuDomainChangeEjectableMedia(virQEMUDriverPtr driver, if (qemuDomainObjExitMonitor(driver, vm) < 0) goto cleanup; - if (rc == -2) { + if (rc < 0) { /* we've already tried, error out */ - if (ejectRetry) + if (ejectError) { + virSetError(ejectError); + virFreeError(ejectError); goto error; - VIR_DEBUG("tray is locked, wait for the guest to unlock " + } + ejectError = virSaveLastError(); + VIR_DEBUG("tray may be locked, wait for the guest to unlock " "the tray and try to eject it again"); - ejectRetry = true; - } else if (rc < 0) { - goto error; } if (virTimeMillisNow(&now) < 0) @@ -220,7 +221,7 @@ qemuDomainChangeEjectableMedia(virQEMUDriverPtr driver, if (virDomainObjWaitUntil(vm, now + CHANGE_MEDIA_TIMEOUT) != 0) goto error; } - } while (ejectRetry && rc != 0); + } while (rc < 0); if (!virStorageSourceIsEmpty(newsrc)) { if (qemuGetDriveSourceString(newsrc, conn, &sourcestr) < 0) diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c index 8352e53..66a2922 100644 --- a/src/qemu/qemu_monitor_json.c +++ b/src/qemu/qemu_monitor_json.c @@ -2272,8 +2272,7 @@ int qemuMonitorJSONSetCPU(qemuMonitorPtr mon, * Run QMP command to eject a media from ejectable device. * * Returns: - * -2 on error, when the tray is locked - * -1 on all other errors + * -1 on error * 0 on success */ int qemuMonitorJSONEjectMedia(qemuMonitorPtr mon, @@ -2294,15 +2293,6 @@ int qemuMonitorJSONEjectMedia(qemuMonitorPtr mon, if (ret == 0) ret = qemuMonitorJSONCheckError(cmd, reply); - if (ret < 0) { - virJSONValuePtr error = virJSONValueObjectGet(reply, "error"); - if (error) { - const char *errorStr = virJSONValueObjectGetString(error, "desc"); - if (errorStr && c_strcasestr(errorStr, "is locked")) - ret = -2; - } - } - virJSONValueFree(cmd); virJSONValueFree(reply); return ret; diff --git a/src/qemu/qemu_monitor_text.c b/src/qemu/qemu_monitor_text.c index bb87397..3129427 100644 --- a/src/qemu/qemu_monitor_text.c +++ b/src/qemu/qemu_monitor_text.c @@ -1170,8 +1170,7 @@ int qemuMonitorTextSetCPU(qemuMonitorPtr mon, int cpu, bool online) * Run HMP command to eject a media from ejectable device. * * Returns: - * -2 on error, when the tray is locked - * -1 on all other errors + * -1 on error * 0 on success */ int qemuMonitorTextEjectMedia(qemuMonitorPtr mon, @@ -1192,8 +1191,6 @@ int qemuMonitorTextEjectMedia(qemuMonitorPtr mon, * device not found, device is locked ... * No message is printed on success it seems */ if (c_strcasestr(reply, "device ")) { - if (c_strcasestr(reply, "is locked")) - ret = -2; virReportError(VIR_ERR_OPERATION_FAILED, _("could not eject media on %s: %s"), dev_name, reply); goto cleanup; -- 2.7.3

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[libvirt] [PATCH v4] Use-correct-pci-addresses-during-interface-detach
by Nitesh Konkar 22 Mar '16

22 Mar '16

The virsh attach virsh detach interface command fails when both live and config are set and when the interface gets attached to different pci slots on live and config xml respectively. When we attach an interface with both --live and --config, the first time they get the same PCI slots, but the second time onwards it differs and hence the virsh detach-interface --live --config command fails. This patch makes sure that when both --live --config are set , qemuDomainDetachDeviceFlags is called twice, once with config xml and once with live xml. --- Change log: v4: * Code unchanged, updated with commit message,change log and steps to reproduce the issue.. v3: * Created function vshDomainDetachInterface and called it once/twice from cmdDetachInterface depending on number of flags set (live/config/both). Passed the correct xml(live/persistent) to it. v2: * Changes only in cmdDetachInterface to pass the right domain xml depending on the flag set (live/config/both). v1: * Changes only in qemuDomainDetachDeviceFlags to set the right value in dev and dev_copy. Steps to see the issue: virsh attach-interface --domain DomainName --type network --source default --mac 52:54:00:4b:76:5f --live --config virsh detach-interface --domain DomainName --type network --mac 52:54:00:4b:76:5f --live --config virsh attach-interface --domain DomainName --type network --source default --mac 52:54:00:4b:76:5f --live --config virsh detach-interface --domain DomainName --type network --mac 52:54:00:4b:76:5f --live --config tools/virsh-domain.c | 104 +++++++++++++++++++++++++++++++-------------------- 1 file changed, 64 insertions(+), 40 deletions(-) diff --git a/tools/virsh-domain.c b/tools/virsh-domain.c index 62acecb..a6abaf5 100644 --- a/tools/virsh-domain.c +++ b/tools/virsh-domain.c @@ -10801,40 +10801,21 @@ static const vshCmdOptDef opts_detach_interface[] = { {.name = NULL} }; -static bool -cmdDetachInterface(vshControl *ctl, const vshCmd *cmd) +static bool +vshDomainDetachInterface(char *doc, unsigned int flags, virDomainPtr dom, vshControl *ctl, const vshCmd *cmd) { - virDomainPtr dom = NULL; xmlDocPtr xml = NULL; xmlXPathObjectPtr obj = NULL; xmlXPathContextPtr ctxt = NULL; xmlNodePtr cur = NULL, matchNode = NULL; - char *detach_xml = NULL; const char *mac = NULL, *type = NULL; - char *doc = NULL; + char *detach_xml = NULL; + bool current = vshCommandOptBool(cmd, "current"); char buf[64]; int diff_mac; size_t i; int ret; bool functionReturn = false; - unsigned int flags = VIR_DOMAIN_AFFECT_CURRENT; - bool current = vshCommandOptBool(cmd, "current"); - bool config = vshCommandOptBool(cmd, "config"); - bool live = vshCommandOptBool(cmd, "live"); - bool persistent = vshCommandOptBool(cmd, "persistent"); - - VSH_EXCLUSIVE_OPTIONS_VAR(persistent, current); - - VSH_EXCLUSIVE_OPTIONS_VAR(current, live); - VSH_EXCLUSIVE_OPTIONS_VAR(current, config); - - if (config || persistent) - flags |= VIR_DOMAIN_AFFECT_CONFIG; - if (live) - flags |= VIR_DOMAIN_AFFECT_LIVE; - - if (!(dom = virshCommandOptDomain(ctl, cmd, NULL))) - return false; if (vshCommandOptStringReq(ctl, cmd, "type", &type) < 0) goto cleanup; @@ -10842,15 +10823,6 @@ cmdDetachInterface(vshControl *ctl, const vshCmd *cmd) if (vshCommandOptStringReq(ctl, cmd, "mac", &mac) < 0) goto cleanup; - if (persistent && - virDomainIsActive(dom) == 1) - flags |= VIR_DOMAIN_AFFECT_LIVE; - - if (flags & VIR_DOMAIN_AFFECT_CONFIG) - doc = virDomainGetXMLDesc(dom, VIR_DOMAIN_XML_INACTIVE); - else - doc = virDomainGetXMLDesc(dom, 0); - if (!doc) goto cleanup; @@ -10918,23 +10890,75 @@ cmdDetachInterface(vshControl *ctl, const vshCmd *cmd) else ret = virDomainDetachDevice(dom, detach_xml); - if (ret != 0) { - vshError(ctl, "%s", _("Failed to detach interface")); - } else { - vshPrint(ctl, "%s", _("Interface detached successfully\n")); + if (ret == 0) functionReturn = true; - } cleanup: - VIR_FREE(doc); VIR_FREE(detach_xml); - virDomainFree(dom); + xmlFreeDoc(xml); xmlXPathFreeObject(obj); xmlXPathFreeContext(ctxt); - xmlFreeDoc(xml); return functionReturn; } +static bool +cmdDetachInterface(vshControl *ctl, const vshCmd *cmd) +{ + virDomainPtr dom = NULL; + unsigned int flags = VIR_DOMAIN_AFFECT_CURRENT; + char *doc_live = NULL, *doc_config = NULL; + bool current = vshCommandOptBool(cmd, "current"); + bool config = vshCommandOptBool(cmd, "config"); + bool live = vshCommandOptBool(cmd, "live"); + bool persistent = vshCommandOptBool(cmd, "persistent"); + bool functionReturn = false; + + VSH_EXCLUSIVE_OPTIONS_VAR(persistent, current); + + VSH_EXCLUSIVE_OPTIONS_VAR(current, live); + VSH_EXCLUSIVE_OPTIONS_VAR(current, config); + + if (config || persistent) + flags |= VIR_DOMAIN_AFFECT_CONFIG; + + if (!(dom = virshCommandOptDomain(ctl, cmd, NULL))) + return false; + + if (persistent && + virDomainIsActive(dom) == 1) + flags |= VIR_DOMAIN_AFFECT_LIVE; + + if (flags & VIR_DOMAIN_AFFECT_CONFIG) { + doc_config = virDomainGetXMLDesc(dom, VIR_DOMAIN_XML_INACTIVE); + if (!(functionReturn = vshDomainDetachInterface(doc_config, flags, dom, ctl, cmd))) + goto cleanup; + } + + if (live) + flags |= VIR_DOMAIN_AFFECT_LIVE; + + if (flags & VIR_DOMAIN_AFFECT_LIVE) { + doc_live = virDomainGetXMLDesc(dom, 0); + + if (flags & VIR_DOMAIN_AFFECT_CONFIG) + flags &= (~VIR_DOMAIN_AFFECT_CONFIG); + + functionReturn = vshDomainDetachInterface(doc_live, flags, dom, ctl, cmd); + } + + cleanup: + if (functionReturn == false) { + vshError(ctl, "%s", _("Failed to detach interface")); + } else { + vshPrint(ctl, "%s", _("Interface detached successfully\n")); + functionReturn = true; + } + VIR_FREE(doc_live); + VIR_FREE(doc_config); + virDomainFree(dom); + return functionReturn; +} + typedef enum { VIRSH_FIND_DISK_NORMAL, VIRSH_FIND_DISK_CHANGEABLE, -- 1.8.3.1

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Re: [libvirt] [PATCH v5 0/5] ARM: add query-gic-capabilities SMP command
by Peter Xu 22 Mar '16

22 Mar '16

On Mon, Mar 21, 2016 at 04:56:07PM +0100, Andrea Bolognani wrote: > On Fri, 2016-03-18 at 11:27 +0800, Peter Xu wrote: > > v5 changes: > > - patch 2: moved to target-arm/monitor.c (from target-arm/machine.c) > > [Peter] > > - patch 3: splitted into three patches: [all from Peter's comments] > > - patch 3 (new): leverage kvm_arm_create_scratch_host_vcpu(), tiny > > enhancement of old one to suite our need > > - patch 4: introduce kvm_support_device() in kvm-all.c > > - patch 5: do the implementation. > > Tested on two separate aarch64 hosts, seems to work fine. Thanks Andrea! Sorry I forgot to CC libvir-list. To avoid duplication, not re-sending but CCing in this reply. If anyone interested, please review in the following link: https://lists.gnu.org/archive/html/qemu-devel/2016-03/msg04465.html (which points to exactly current thread.) Sorry for the inconvenience! -- peterx

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[libvirt] virtual machine won't autostart when using LVM with cache
by David Hlacik 22 Mar '16

22 Mar '16

Hello guys, OS Fedora 23 with latest updates Recently I have switched to use LVM cache feature on logical volume /dev/hdd/windata1 to improve it performace using 32GB partition from SSD disk. However, when my computer will start, my virtual machine won't autostart Mar 21 10:48:57 brutus-coreos libvirtd[956]: Cannot access storage file '/dev/hdd/windata1' (as uid:107, gid:107): No such file or directory Mar 21 10:48:57 brutus-coreos libvirtd[956]: Failed to autostart VM 'winos1': Cannot access storage file '/dev/hdd/windata1' (as uid:107, gid:107): No such file or directory Mar 21 10:48:57 brutus-coreos libvirtd[956]: Cannot access storage file '/dev/hdd/windata1' (as uid:107, gid:107): No such file or directory It seems that when using LVM cache, one have to wait till it will inicialize? When I will manually start virtual machine afterwards, everything works OK : [root@brutus-coreos ~]# virsh start winos1 Domain winos1 started I have tried to remove LVM cache from /dev/hdd/windata1 and afterward autostart works! So it must be LVM cache related. Can you please help me to solve this ? Thanks in advance David Hlacik +420-777-307-745 | david(a)hlacik.cz [image: View David Hlacik's profile on LinkedIn] <http://cz.linkedin.com/in/hlacik>

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