September 2014 - Devel - libvirt List Archives

[libvirt] [PATCH] Fix crash cpu_shares change event crash on domain startup
by Ján Tomko 29 Sep '14

29 Sep '14

Introduced by commit 0dce260. qemuDomainEventQueue was called with qemuDomainObjPrivatePtr instead of virQEMUDriverPtr. https://bugzilla.redhat.com/show_bug.cgi?id=1147494 --- src/qemu/qemu_cgroup.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/src/qemu/qemu_cgroup.c b/src/qemu/qemu_cgroup.c index 8819943..bd22b7f 100644 --- a/src/qemu/qemu_cgroup.c +++ b/src/qemu/qemu_cgroup.c @@ -674,7 +674,8 @@ qemuSetupCpusetCgroup(virDomainObjPtr vm, static int -qemuSetupCpuCgroup(virDomainObjPtr vm) +qemuSetupCpuCgroup(virQEMUDriverPtr driver, + virDomainObjPtr vm) { qemuDomainObjPrivatePtr priv = vm->privateData; virObjectEventPtr event = NULL; @@ -711,7 +712,7 @@ qemuSetupCpuCgroup(virDomainObjPtr vm) } if (event) - qemuDomainEventQueue(vm->privateData, event); + qemuDomainEventQueue(driver, event); } return 0; @@ -845,7 +846,7 @@ qemuSetupCgroup(virQEMUDriverPtr driver, if (qemuSetupMemoryCgroup(vm) < 0) goto cleanup; - if (qemuSetupCpuCgroup(vm) < 0) + if (qemuSetupCpuCgroup(driver, vm) < 0) goto cleanup; if (qemuSetupCpusetCgroup(vm, nodemask, caps) < 0) -- 1.8.5.5

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[libvirt] [PATCH v3 0/7] qemu: Introduce support for new the block_set_io_throttle parameters add in the version 1.7 of qemu.
by Matthias Gatto 29 Sep '14

29 Sep '14

This series of patches add support for bps_max, bps_rd_max, bps_wr_max, bps_max, bps_rd_max, bps_wr_max, and iops_size in the functions qemuDomainSetBlockIoTune and qemuDomainGetBlockIoTune. The last patch add support for these parameters to the virsh blkdeviotune command. v2: spellfix v3: Merge patch 1/9,2/9,5/9 together. Change the capability detection.(patch 2/7 and 3/7). Try to make the usage of QEMU_NB_BLOCK_IO_TUNE_PARAM_MAX more explicit(patch 3/7). Matthias Gatto (7): qemu: Add defines for the news throttle options and modify the structure _virDomainBlockIoTuneInfo. qemu: Add the capability to detect if the qemu binary have the capability to use bps_max and friends qemu: Add bps_max and friends qemu driver qemu: Add bps_max and friends QMP suport qemu: Add bps_max and friends "text" support qemu: add bps_max and friends to qemu command generation virsh: Add bps_max and friends to virsh include/libvirt/libvirt.h.in | 54 +++++++++++++++ src/conf/domain_conf.c | 89 +++++++++++++++++++++++- src/conf/domain_conf.h | 7 ++ src/qemu/qemu_capabilities.c | 4 ++ src/qemu/qemu_capabilities.h | 1 + src/qemu/qemu_command.c | 49 +++++++++++++ src/qemu/qemu_driver.c | 162 ++++++++++++++++++++++++++++++++++++++++--- src/qemu/qemu_monitor.c | 14 ++-- src/qemu/qemu_monitor.h | 6 +- src/qemu/qemu_monitor_json.c | 70 +++++++++++++++---- src/qemu/qemu_monitor_json.h | 6 +- src/qemu/qemu_monitor_text.c | 89 +++++++++++++++++++++--- src/qemu/qemu_monitor_text.h | 6 +- tests/qemumonitorjsontest.c | 6 +- tools/virsh-domain.c | 119 +++++++++++++++++++++++++++++++ tools/virsh.pod | 11 ++- 16 files changed, 643 insertions(+), 50 deletions(-) -- 1.8.3.1

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[libvirt] [PATCH] qemu: save domain status after set the blkio parameters
by Shanzhi Yu 29 Sep '14

29 Sep '14

After set the blkio parameters for running domain, save the change into live xml is needed to survive restarting the libvirtd Same story with bug 1146511 Signed-off-by: Shanzhi Yu <shyu(a)redhat.com> --- src/qemu/qemu_driver.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index 6606154..9c96dea 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -8090,6 +8090,8 @@ qemuDomainSetBlkioParameters(virDomainPtr dom, } if (ret < 0) goto cleanup; + if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm) < 0) + goto cleanup; if (flags & VIR_DOMAIN_AFFECT_CONFIG) { /* Clang can't see that if we get here, persistentDef was set. */ sa_assert(persistentDef); -- 1.9.3

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[libvirt] [PATCH] virsh: Fix help message of allocpages
by Tomoki Sekiyama 29 Sep '14

29 Sep '14

Fix info in the command definition of allocpages, which is currently pointing info for 'capabilities'. Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama(a)hds.com> --- tools/virsh-host.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/virsh-host.c b/tools/virsh-host.c index a857a3b..4a3ff28 100644 --- a/tools/virsh-host.c +++ b/tools/virsh-host.c @@ -1326,7 +1326,7 @@ const vshCmdDef hostAndHypervisorCmds[] = { {.name = "allocpages", .handler = cmdAllocpages, .opts = opts_allocpages, - .info = info_capabilities, + .info = info_allocpages, .flags = 0 }, {.name = "capabilities",

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[libvirt] Running the test fails virnetmessagetest with libvirt 1.2.8
by Stefano Ricci 29 Sep '14

29 Sep '14

Hello I apologize in advance for my English. I compiled the new version of libvirt 1.2.8 on an environment Development Linux from Scratch with the following configure: configure: Configuration summary configure: ===================== configure: configure: Drivers configure: configure: Xen: no configure: QEMU: yes configure: UML: yes configure: OpenVZ: no configure: VMware: no configure: VBox: yes configure: XenAPI: no configure: xenlight: no configure: LXC: no configure: PHYP: yes configure: ESX: no configure: Hyper-V: no configure: Parallels: no configure: Bhyve: no configure: Test: yes configure: Remote: yes configure: Network: yes configure: Libvirtd: yes configure: Interface: yes configure: macvtap: yes configure: virtport: yes configure: configure: Storage Drivers configure: configure: Dir: yes configure: FS: no configure: NetFS: no configure: LVM: yes configure: iSCSI: yes configure: SCSI: yes configure: mpath: yes configure: Disk: no configure: RBD: no configure: Sheepdog: no configure: Gluster: no configure: ZFS: no configure: configure: Security Drivers configure: configure: SELinux: yes (/sys/fs/selinux) configure: AppArmor: no (install profiles: no) configure: configure: Driver Loadable Modules configure: configure: dlopen: -ldl configure: configure: Libraries configure: configure: apparmor: no configure: attr: yes (CFLAGS='' LIBS='-lattr') configure: audit: no configure: avahi: no configure: blkid: yes (CFLAGS='-I/install/include/blkid -I/install/include/uuid ' LIBS='-L/install/lib -lblkid ') configure: capng: no configure: curl: no configure: dbus: yes (CFLAGS='-I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include ' LIBS='-ldbus-1 ') configure: fuse: yes (CFLAGS='-D_FILE_OFFSET_BITS=64 -I/usr/include/fuse ' LIBS='-lfuse -pthread ') configure: glusterfs: no configure: hal: no configure: netcf: no configure: numactl: no configure: openwsman: no configure: pciaccess: yes (CFLAGS='' LIBS='-lpciaccess ') configure: readline: yes (CFLAGS='' LIBS='-lreadline') configure: sanlock: no configure: sasl: yes (CFLAGS='' LIBS='-lsasl2') configure: selinux: yes (CFLAGS='' LIBS='-lselinux') configure: ssh2: yes (CFLAGS='' LIBS='-lssh2 ') configure: systemd_daemon: no configure: udev: yes (CFLAGS='' LIBS='-ludev ') configure: yajl: yes (CFLAGS='' LIBS='-lyajl') configure: libxml: -I/usr/include/libxml2 -lxml2 configure: dlopen: -ldl configure: openwsman: no configure: gnutls: -lgnutls configure: firewalld: no configure: polkit: no configure: xen: no configure: xenapi: no configure: xenlight: no configure: pcap: -I/usr/include -L/usr/lib -lpcap configure: nl: -I/usr/include/libnl3 -I/usr/include/libnl3 -lnl-3 -lnl-route-3 -lnl-3 configure: mscom: no configure: xdr: configure: rbd: no configure: pm-utils: yes configure: configure: Test suite configure: configure: Coverage: no configure: Alloc OOM: no configure: configure: Miscellaneous configure: configure: Debug: yes configure: Use -Werror: no configure: Warning Flags: -W -Waddress -Waggressive-loop-optimizations -Wall -Warray-bounds -Wattributes -Wbad-function-cast -Wbuiltin-macro-redefined -Wcast-align -Wchar-subscripts -Wclobbered -Wcomment -Wcomments -Wcoverage-mismatch -Wcpp -Wdeprecated-declarations -Wdisabled-optimization -Wdiv-by-zero -Wdouble-promotion -Wempty-body -Wendif-labels -Wextra -Wformat-contains-nul -Wformat-extra-args -Wformat-security -Wformat-y2k -Wformat-zero-length -Wfree-nonheap-object -Wignored-qualifiers -Wimplicit -Wimplicit-function-declaration -Wimplicit-int -Winit-self -Winline -Wint-to-pointer-cast -Winvalid-memory-model -Winvalid-pch -Wjump-misses-init -Wlogical-op -Wmain -Wmaybe-uninitialized -Wmissing-braces -Wmissing-declarations -Wmissing-field-initializers -Wmissing-include-dirs -Wmissing-parameter-type -Wmissing-prototypes -Wmultichar -Wnarrowing -Wnested-externs -Wnonnull -Wnormalized=nfc -Wold-style-declaration -Wold-style-definition -Woverflow -Woverride-init -Wpacked-bitfield-compat -Wparentheses -Wpointer-arith -Wpointer-sign -Wpointer-to-int-cast -Wpragmas -Wreturn-local-addr -Wreturn-type -Wsequence-point -Wshadow -Wsizeof-pointer-memaccess -Wstrict-aliasing -Wstrict-prototypes -Wsuggest-attribute=const -Wsuggest-attribute=format -Wsuggest-attribute=noreturn -Wsuggest-attribute=pure -Wswitch -Wsync-nand -Wtrampolines -Wtrigraphs -Wtype-limits -Wuninitialized -Wunknown-pragmas -Wunused -Wunused-but-set-parameter -Wunused-but-set-variable -Wunused-function -Wunused-label -Wunused-local-typedefs -Wunused-parameter -Wunused-result -Wunused-value -Wunused-variable -Wvarargs -Wvariadic-macros -Wvector-operation-performance -Wvolatile-register-var -Wwrite-strings -fdiagnostics-show-option -funit-at-a-time -Wno-sign-compare -Wjump-misses-init -Wno-format-nonliteral -Wframe-larger-than=4096 -fstack-protector-strong -fexceptions -fasynchronous-unwind-tables -fipa-pure-const -Wno-suggest-attribute=pure -Wno-suggest-attribute=const configure: DTrace: no configure: numad: no configure: XML Catalog: /etc/xml/catalog configure: Init script: check configure: Char device locks: /var/lock configure: configure: Developer Tools configure: configure: Wireshark dissector: no configure: configure: Privileges configure: configure: QEMU: root:root The compilation finishes without any problems but in the execution of the tests fails virnetmessagetest. When i tried using the libvirtd running without any problems but I can not run the Connection with the virsh command virsh -c qemu:///system that returns the following error: "Unable to encode message header" and the log shows the error: "virNetSocketReadWire: 1523: End of file while reading dates: Error of input / output". There 's someone who can give me a hand to solve the problem? thanks Stefano

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[libvirt] [RFC PATCH] qcow2: Fix race in cache invalidation
by Alexey Kardashevskiy 28 Sep '14

28 Sep '14

On 09/19/2014 06:47 PM, Kevin Wolf wrote:> Am 16.09.2014 um 14:59 hat Paolo Bonzini geschrieben: >> Il 16/09/2014 14:52, Kevin Wolf ha scritto: >>> Yes, that's true. We can't fix this problem in qcow2, though, because >>> it's a more general one. I think we must make sure that >>> bdrv_invalidate_cache() doesn't yield. >>> >>> Either by forbidding to run bdrv_invalidate_cache() in a coroutine and >>> moving the problem to the caller (where and why is it even called from a >>> coroutine?), or possibly by creating a new coroutine for the driver >>> callback and running that in a nested event loop that only handles >>> bdrv_invalidate_cache() callbacks, so that the NBD server doesn't get a >>> chance to process new requests in this thread. >> >> Incoming migration runs in a coroutine (the coroutine entry point is >> process_incoming_migration_co). But everything after qemu_fclose() can >> probably be moved into a separate bottom half, so that it gets out of >> coroutine context. > > Alexey, you should probably rather try this (and add a bdrv_drain_all() > in bdrv_invalidate_cache) than messing around with qcow2 locks. This > isn't a problem that can be completely fixed in qcow2. Ok. Tried :) Not very successful though. The patch is below. Is that the correct bottom half? When I did it, I started getting crashes in various sport on accesses to s->l1_cache which is NULL after qcow2_close. Normally the code would check s->l1_size and then use but they are out of sync. So I clear it in qcow2_close(). This allowed migrated guest to work and not to crash until I shut it down when it aborted at "HERE IT FAILS ON SHUTDOWN". Here I realized I am missing something in this picture again, what is it? Thanks! --- block.c | 2 ++ block/qcow2-cache.c | 2 +- block/qcow2.c | 50 ++++++++++++++++++++++++++++++++++++-------------- block/qcow2.h | 4 ++++ 4 files changed, 43 insertions(+), 15 deletions(-) diff --git a/block.c b/block.c index d06dd51..1e6dfd1 100644 --- a/block.c +++ b/block.c @@ -5044,6 +5044,8 @@ void bdrv_invalidate_cache(BlockDriverState *bs, Error **errp) error_setg_errno(errp, -ret, "Could not refresh total sector count"); return; } + + bdrv_drain_all(); } void bdrv_invalidate_cache_all(Error **errp) diff --git a/block/qcow2-cache.c b/block/qcow2-cache.c index 904f6b1..59ff48c 100644 --- a/block/qcow2-cache.c +++ b/block/qcow2-cache.c @@ -259,7 +259,7 @@ static int qcow2_cache_find_entry_to_replace(Qcow2Cache *c) if (min_index == -1) { /* This can't happen in current synchronous code, but leave the check * here as a reminder for whoever starts using AIO with the cache */ - abort(); + abort(); // <==== HERE IT FAILS ON SHUTDOWN } return min_index; } diff --git a/block/qcow2.c b/block/qcow2.c index f9e045f..2b84562 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -1399,6 +1399,7 @@ static void qcow2_close(BlockDriverState *bs) qemu_vfree(s->l1_table); /* else pre-write overlap checks in cache_destroy may crash */ s->l1_table = NULL; + s->l1_size = 0; if (!(bs->open_flags & BDRV_O_INCOMING)) { qcow2_cache_flush(bs, s->l2_table_cache); @@ -1419,16 +1420,11 @@ static void qcow2_close(BlockDriverState *bs) qcow2_free_snapshots(bs); } +static void qcow2_invalidate_cache_bh_cb(void *opaque); + static void qcow2_invalidate_cache(BlockDriverState *bs, Error **errp) { BDRVQcowState *s = bs->opaque; - int flags = s->flags; - AES_KEY aes_encrypt_key; - AES_KEY aes_decrypt_key; - uint32_t crypt_method = 0; - QDict *options; - Error *local_err = NULL; - int ret; /* * Backing files are read-only which makes all of their metadata immutable, @@ -1436,13 +1432,28 @@ static void qcow2_invalidate_cache(BlockDriverState *bs, Error **errp) */ if (s->crypt_method) { - crypt_method = s->crypt_method; - memcpy(&aes_encrypt_key, &s->aes_encrypt_key, sizeof(aes_encrypt_key)); - memcpy(&aes_decrypt_key, &s->aes_decrypt_key, sizeof(aes_decrypt_key)); + s->bh_crypt_method = s->crypt_method; + memcpy(&s->bh_aes_encrypt_key, &s->aes_encrypt_key, sizeof(s->bh_aes_encrypt_key)); + memcpy(&s->bh_aes_decrypt_key, &s->aes_decrypt_key, sizeof(s->bh_aes_decrypt_key)); + } else { + s->bh_crypt_method = 0; } qcow2_close(bs); + s->cache_inv_bh = aio_bh_new(bdrv_get_aio_context(bs), + qcow2_invalidate_cache_bh_cb, + bs); +} + +static void qcow2_invalidate_cache_bh(BlockDriverState *bs, Error **errp) +{ + BDRVQcowState *s = bs->opaque; + int flags = s->flags; + QDict *options; + Error *local_err = NULL; + int ret; + bdrv_invalidate_cache(bs->file, &local_err); if (local_err) { error_propagate(errp, local_err); @@ -1464,11 +1475,22 @@ static void qcow2_invalidate_cache(BlockDriverState *bs, Error **errp) return; } - if (crypt_method) { - s->crypt_method = crypt_method; - memcpy(&s->aes_encrypt_key, &aes_encrypt_key, sizeof(aes_encrypt_key)); - memcpy(&s->aes_decrypt_key, &aes_decrypt_key, sizeof(aes_decrypt_key)); + if (s->bh_crypt_method) { + s->crypt_method = s->bh_crypt_method; + memcpy(&s->aes_encrypt_key, &s->bh_aes_encrypt_key, sizeof(s->bh_aes_encrypt_key)); + memcpy(&s->aes_decrypt_key, &s->bh_aes_decrypt_key, sizeof(s->bh_aes_decrypt_key)); } + + qemu_bh_delete(s->cache_inv_bh); + s->cache_inv_bh = NULL; +} + +static void qcow2_invalidate_cache_bh_cb(void *opaque) +{ + BlockDriverState *bs = opaque; + Error *local_err = NULL; + + qcow2_invalidate_cache_bh(bs, &local_err); } static size_t header_ext_add(char *buf, uint32_t magic, const void *s, diff --git a/block/qcow2.h b/block/qcow2.h index 6aeb7ea..58d1859 100644 --- a/block/qcow2.h +++ b/block/qcow2.h @@ -271,6 +271,10 @@ typedef struct BDRVQcowState { QLIST_HEAD(, Qcow2UnknownHeaderExtension) unknown_header_ext; QTAILQ_HEAD (, Qcow2DiscardRegion) discards; bool cache_discards; + QEMUBH *cache_inv_bh; + AES_KEY bh_aes_encrypt_key; + AES_KEY bh_aes_decrypt_key; + uint32_t bh_crypt_method; } BDRVQcowState; /* XXX: use std qcow open function ? */ -- 2.0.0

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[libvirt] [PATCH] qemu: remove capabilities.monitor.sock when done
by Guido Günther 26 Sep '14

26 Sep '14

Prompted by http://bugs.debian.org/761131 --- src/qemu/qemu_capabilities.c | 1 + 1 file changed, 1 insertion(+) diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c index 49f5f75..dca00b2 100644 --- a/src/qemu/qemu_capabilities.c +++ b/src/qemu/qemu_capabilities.c @@ -3306,6 +3306,7 @@ virQEMUCapsInitQMP(virQEMUCapsPtr qemuCaps, virCommandAbort(cmd); virCommandFree(cmd); VIR_FREE(monarg); + ignore_value(unlink(monpath)); VIR_FREE(monpath); virObjectUnref(vm); virObjectUnref(xmlopt); -- 2.1.0

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[libvirt] [PATCH v2 0/3] Add support for shared memory devices
by Martin Kletzander 26 Sep '14

26 Sep '14

This is based on Maxime's patches, but leaving out the last one with server starting, the last version was here: https://www.redhat.com/archives/libvir-list/2014-August/msg01032.html There were some points raised, some discussion went on. Basically whatever we agreed is composed in, but feel free to raise questions and further discussions. However it would be really great if this could get into 1.2.9 release. Martin Kletzander (2): docs, conf, schema: add support for shmem device qemu: Build command line for ivshmem device Maxime Leroy (1): qemu: add capability probing for ivshmem device docs/formatdomain.html.in | 52 +++++ docs/schemas/domaincommon.rng | 39 ++++ src/conf/domain_conf.c | 210 ++++++++++++++++++++- src/conf/domain_conf.h | 24 +++ src/qemu/qemu_capabilities.c | 2 + src/qemu/qemu_capabilities.h | 1 + src/qemu/qemu_command.c | 118 +++++++++++- src/qemu/qemu_command.h | 1 + src/qemu/qemu_hotplug.c | 1 + tests/qemucapabilitiesdata/caps_1.2.2-1.caps | 1 + tests/qemucapabilitiesdata/caps_1.3.1-1.caps | 1 + tests/qemucapabilitiesdata/caps_1.4.2-1.caps | 1 + tests/qemucapabilitiesdata/caps_1.5.3-1.caps | 1 + tests/qemucapabilitiesdata/caps_1.6.0-1.caps | 1 + tests/qemucapabilitiesdata/caps_1.6.50-1.caps | 1 + tests/qemucapabilitiesdata/caps_2.1.1-1.caps | 1 + tests/qemuhelptest.c | 15 +- .../qemuxml2argv-shmem-invalid-size.xml | 24 +++ .../qemuxml2argv-shmem-invalid.xml | 24 +++ .../qemuxml2argv-shmem-msi-only.xml | 24 +++ .../qemuxml2argv-shmem-small-size.xml | 24 +++ tests/qemuxml2argvdata/qemuxml2argv-shmem.args | 16 ++ tests/qemuxml2argvdata/qemuxml2argv-shmem.xml | 51 +++++ tests/qemuxml2argvtest.c | 8 + tests/qemuxml2xmltest.c | 1 + 25 files changed, 635 insertions(+), 7 deletions(-) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-shmem-invalid-size.xml create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-shmem-invalid.xml create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-shmem-msi-only.xml create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-shmem-small-size.xml create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-shmem.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-shmem.xml -- 2.1.1

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[libvirt] [PATCH V2] conf: report error in virCPUDefParseXML
by Jincheng Miao 26 Sep '14

26 Sep '14

When detected invalid 'memAccess', virCPUDefParseXML should report error. Resolves https://bugzilla.redhat.com/show_bug.cgi?id=1146334 Signed-off-by: Jincheng Miao <jmiao(a)redhat.com> --- src/conf/cpu_conf.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/src/conf/cpu_conf.c b/src/conf/cpu_conf.c index 116aa58..9b7fbb0 100644 --- a/src/conf/cpu_conf.c +++ b/src/conf/cpu_conf.c @@ -507,17 +507,19 @@ virCPUDefParseXML(xmlNodePtr node, memAccessStr = virXMLPropString(nodes[i], "memAccess"); if (memAccessStr) { - def->cells[cur_cell].memAccess = - virMemAccessTypeFromString(memAccessStr); + int rc = virMemAccessTypeFromString(memAccessStr); - if (def->cells[cur_cell].memAccess <= 0) { + if (rc <= 0) { virReportError(VIR_ERR_CONFIG_UNSUPPORTED, _("Invalid 'memAccess' attribute " "value '%s'"), memAccessStr); VIR_FREE(memAccessStr); - goto cleanup; + goto error; } + + def->cells[cur_cell].memAccess = rc; + VIR_FREE(memAccessStr); } } -- 1.9.3

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[libvirt] [PATCHv2] qemu: numatune/domiftune no support in session mode
by Erik Skultety 26 Sep '14

26 Sep '14

Tuning NUMA or network interface parameters require root privileges to manage cgroups, thus an attempt to set some of these parameters in session mode on a running domain should be invalid followed by an error. As an example might be memory tuning which raises an error in such case. Following behavior in session mode will be present after applying this patch: tuning | SET | GET | ------------|---------------|--------| numatune | shut off only | always | memtune | never | never | domiftune | never | always | Resolves https://bugzilla.redhat.com/show_bug.cgi?id=1126762 --- src/qemu/qemu_command.c | 14 +++++++++++++- src/qemu/qemu_driver.c | 35 +++++++++++++++++++++++++---------- 2 files changed, 38 insertions(+), 11 deletions(-) diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index 1ca98fb..5d4838e 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -7442,7 +7442,7 @@ qemuBuildCommandLine(virConnectPtr conn, emulator = def->emulator; if (!cfg->privileged) { - /* If we have no cgroups than we can have no tunings that + /* If we have no cgroups then we can have no tunings that * require them */ if (def->mem.hard_limit || def->mem.soft_limit || @@ -7465,6 +7465,18 @@ qemuBuildCommandLine(virConnectPtr conn, _("CPU tuning is not available in session mode")); goto error; } + + virDomainNetDefPtr *nets = def->nets; + size_t nnets = def->nnets; + for (i = 0; i < nnets; i++) { + if (nets[i]->bandwidth) { + if (nets[i]->bandwidth->in || nets[i]->bandwidth->out) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", + _("Network bandwidth tuning is not available in session mode")); + goto error; + } + } + } } for (i = 0; i < def->ngraphics; ++i) { diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index 3c04678..ad02e68 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -8786,6 +8786,13 @@ qemuDomainSetNumaParameters(virDomainPtr dom, &persistentDef) < 0) goto cleanup; + if (!cfg->privileged && + flags & VIR_DOMAIN_AFFECT_LIVE) { + virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s", + _("NUMA tuning is not available in session mode")); + goto cleanup; + } + if (flags & VIR_DOMAIN_AFFECT_LIVE) { if (!virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPUSET)) { virReportError(VIR_ERR_OPERATION_INVALID, "%s", @@ -8870,6 +8877,7 @@ qemuDomainGetNumaParameters(virDomainPtr dom, size_t i; virDomainObjPtr vm = NULL; virDomainDefPtr persistentDef = NULL; + virQEMUDriverConfigPtr cfg = NULL; char *nodeset = NULL; int ret = -1; virCapsPtr caps = NULL; @@ -8888,6 +8896,7 @@ qemuDomainGetNumaParameters(virDomainPtr dom, return -1; priv = vm->privateData; + cfg = virQEMUDriverGetConfig(driver); if (virDomainGetNumaParametersEnsureACL(dom->conn, vm->def) < 0) goto cleanup; @@ -8905,14 +8914,6 @@ qemuDomainGetNumaParameters(virDomainPtr dom, goto cleanup; } - if (flags & VIR_DOMAIN_AFFECT_LIVE) { - if (!virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_MEMORY)) { - virReportError(VIR_ERR_OPERATION_INVALID, - "%s", _("cgroup memory controller is not mounted")); - goto cleanup; - } - } - for (i = 0; i < QEMU_NB_NUMA_PARAM && i < *nparams; i++) { virMemoryParameterPtr param = &params[i]; @@ -8935,9 +8936,16 @@ qemuDomainGetNumaParameters(virDomainPtr dom, if (!nodeset) goto cleanup; } else { - if (virCgroupGetCpusetMems(priv->cgroup, &nodeset) < 0) - goto cleanup; + if (!virCgroupHasController(priv->cgroup, + VIR_CGROUP_CONTROLLER_MEMORY) || + virCgroupGetCpusetMems(priv->cgroup, &nodeset) < 0) { + nodeset = virDomainNumatuneFormatNodeset(vm->def->numatune, + NULL, -1); + if (!nodeset) + goto cleanup; + } } + if (virTypedParameterAssign(param, VIR_DOMAIN_NUMA_NODESET, VIR_TYPED_PARAM_STRING, nodeset) < 0) goto cleanup; @@ -8962,6 +8970,7 @@ qemuDomainGetNumaParameters(virDomainPtr dom, if (vm) virObjectUnlock(vm); virObjectUnref(caps); + virObjectUnref(cfg); return ret; } @@ -9889,6 +9898,12 @@ qemuDomainSetInterfaceParameters(virDomainPtr dom, if (virDomainSetInterfaceParametersEnsureACL(dom->conn, vm->def, flags) < 0) goto cleanup; + if (!cfg->privileged) { + virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s", + _("Network bandwidth tuning is not available in session mode")); + goto cleanup; + } + if (!(caps = virQEMUDriverGetCapabilities(driver, false))) goto cleanup; -- 1.9.3

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