search for: acquir

...nel libguestfs: command: run: \ -f ext2 libguestfs: command: run: \ --host-cpu x86_64 libguestfs: command: run: \ /usr/lib/x86_64-linux-gnu/guestfs/supermin.d libguestfs: command: run: \ -o /var/tmp/.guestfs-1000/appliance.d supermin: version: 5.1.19 supermin: package handler: debian/dpkg supermin: acquiring lock on /var/tmp/.guestfs-1000/lock supermin: if-newer: output does not need rebuilding libguestfs: finished building supermin appliance libguestfs: begin testing qemu features libguestfs: trace: get_cachedir libguestfs: trace: get_cachedir = "/var/tmp" libguestfs: checking for previou...

Hello, I am trying to execute virsh commands on a host but it is giving errors due to failure in acquiring lock. root at kvm01:~# virsh suspend blindone error: Failed to suspend domain blindone error: Timed out during operation: cannot acquire state change lock Any suggestions how can we figure out possible reasons. -- Jatin -------------- next part -------------- An HTML attachment was scrubbed.....

...d a subsequent (manual) blockjob abort got stuck. Now we are unable to do basic operations on the virtual machine like if it was frozen and when issuing another command we see the following: $ virsh shutdown $domain error: Failed to shutdown domain $domain error: Timed out during operation: cannot acquire state change lock (held by remoteDispatchDomainBlockJobAbort) $ virsh blockcommit $domain --active --pivot error: Timed out during operation: cannot acquire state change lock (held by remoteDispatchDomainBlockJobAbort) $ virsh blockjob $domain --abort error: Timed out during operation: cannot ac...

I'm working with an experimental backend for an MCU with heavy multithreading capabilities but lacks proper acquire/release semantics. This is okay, as the programmer can customize __cxa_guard_acquire and __cxa_guard_release to lower/raise appropriate semaphores. The issue I'm having is that I can't seem to figure out when to lower atomic load into an acquire/load pair early enough that the __cxa_...

Hi, syslinux: I use pxelinux to install Linux from network. Currently, my problem is: The first time, the client machine can acquire the IP address from dhcp server but at the second time, the client machine cannot acquire the IP again. The only way is to remove the /var/lib/dhcp/dhcpd.leases file in server and restart the dhcpd service. Then the client machine can get the IP again. That means if I want to boot the client...

...st monotonic , the ordering constraint on failure must be no stronger than that on success, and the failure ordering cannot be either release or acq_rel ." The way this operation is implemented in the standard library of the Rust programming language, the combination of release (success) and acquire (failure) is not permitted and will fail at runtime, the prevailing opinion being, that a failing CAS with release/acquire ordering is actually relaxed on the store part and hence acquire ordering for the failure case would be stronger. However, I don't believe that this a correct reading of...

...20:52:14: DEBUG: policy.c:184:cmpspidxstrict(): sub:0xbfbff958: 0.0.0.0/0[0] 10.0.0.0/24[0] proto=any dir=out 2004-04-27 20:52:14: DEBUG: policy.c:185:cmpspidxstrict(): db :0x80a1c08: 10.0.0.0/24[0] 0.0.0.0/0[0] proto=any dir=in 2004-04-27 20:52:18: DEBUG: pfkey.c:197:pfkey_handler(): get pfkey ACQUIRE message 2004-04-27 20:52:18: DEBUG: pfkey.c:1620:pk_recvacquire(): suitable outbound SP found: 0.0.0.0/0[0] 10.0.0.0/24[0] proto=any dir=ou t. 2004-04-27 20:52:18: DEBUG: policy.c:184:cmpspidxstrict(): sub:0xbfbff944: 10.0.0.0/24[0] 0.0.0.0/0[0] proto=any dir=in 2004-04-27 20:52:18: DEBUG: polic...

...s(+), 20 deletions(-) diff --git a/src/locks.c b/src/locks.c index bd8fd99..1724b5a 100644 --- a/src/locks.c +++ b/src/locks.c @@ -56,53 +56,39 @@ lock_init_thread_model (void) void lock_connection (void) { - if (thread_model <= NBDKIT_THREAD_MODEL_SERIALIZE_CONNECTIONS) { - debug ("acquire connection lock"); + if (thread_model <= NBDKIT_THREAD_MODEL_SERIALIZE_CONNECTIONS) pthread_mutex_lock (&connection_lock); - } } void unlock_connection (void) { - if (thread_model <= NBDKIT_THREAD_MODEL_SERIALIZE_CONNECTIONS) { - debug ("release connection lock...

Hi I keep getting libvirtError: Timed out during operation: cannot acquire state change lock errors - what does this mean exactly ? Using Ubuntu 64 bit 10.04 host and guest -- Kind regards Julian Robbins

...linux64mingw64/llvm-clang/utils/FileCheck/Release/FileCheck.o -lLLVMSupport \ -ldl -lm /home/ruben/mingw-w64/toolchain/linux64mingw64/llvm-clang/Release/lib/libLLVMSupport.a(Signals.o): In function `SignalHandler(int)': Signals.cpp:(.text+0x4d8): undefined reference to `llvm::sys::MutexImpl::acquire()' /home/ruben/mingw-w64/toolchain/linux64mingw64/llvm-clang/Release/lib/libLLVMSupport.a(Signals.o): In function `llvm::sys::RunInterruptHandlers()': Signals.cpp:(.text+0x600): undefined reference to `llvm::sys::MutexImpl::acquire()' /home/ruben/mingw-w64/toolchain/linux64mingw64/llvm...

...D_ONCE() invocation > > > into a control dependency and consequently allowing for harmful > > > reordering by the CPU. > > > > > > Ensure that such transformations are harmless by overriding the generic > > > READ_ONCE() definition with one that provides acquire semantics when > > > building with LTO. > > > > > > Signed-off-by: Will Deacon <will at kernel.org> > > > --- > > > arch/arm64/include/asm/rwonce.h | 63 +++++++++++++++++++++++++++++++ > > > arch/arm64/kernel/vdso/Makefile | 2 +- &...

...everyone, I have a question that you may be able to help me with. I had a live block migration of a qemu-kvm guest fail (initiated via nova), in which the guest remained running on the source, but if I try to re-initiate the live migration it returns libvirtError: Timed out during operation: cannot acquire state change lock (held by monitor=remoteDispatchDomainMigratePerform3Params). Looking at blockjob --info I see there is a block copy that has been stuck at 23 % for a few hours now. Is it safe to issue a —abort to the blockjob without impacting the vm and will that resolve the lock? Source: libv...

Hi, what's the current status of the memory-ordered operations described in https://docs.google.com/Doc?docid=0AYWBeVVqyP7dZGRiNG1oeHpfMjJkejVnOThkZA&hl=en.&pli=1 i.e. the ones for "load acquire", "store release" etc. for C++0x atomics, not the older ones for the __sync intrinsics? The specification looks good - is it just waiting to be implemented? Al -- IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you...

FYI, Google is acquiring On2: <http://www.betanews.com/article/Future-of-open-Web-video-may-change-with-Google-acquisition-of-On2/1249481107> Also on Slashdot: <http://tech.slashdot.org/article.pl?sid=09/08/05/1742249> Anyone knows what, if anything, this means for Theora, open video and/or the Xiph.Org...

...c key. However, uncontended lock-unlock > operation are really just a tiny percentage of a real workload. So > there should no noticeable change in application performance. No, entirely unacceptable. > +#ifdef CONFIG_VIRT_UNFAIR_LOCKS > +/** > + * queue_spin_trylock_unfair - try to acquire the queue spinlock unfairly > + * @lock : Pointer to queue spinlock structure > + * Return: 1 if lock acquired, 0 if failed > + */ > +static __always_inline int queue_spin_trylock_unfair(struct qspinlock *lock) > +{ > + union arch_qspinlock *qlock = (union arch_qspinlock *)lock;...

...c key. However, uncontended lock-unlock > operation are really just a tiny percentage of a real workload. So > there should no noticeable change in application performance. No, entirely unacceptable. > +#ifdef CONFIG_VIRT_UNFAIR_LOCKS > +/** > + * queue_spin_trylock_unfair - try to acquire the queue spinlock unfairly > + * @lock : Pointer to queue spinlock structure > + * Return: 1 if lock acquired, 0 if failed > + */ > +static __always_inline int queue_spin_trylock_unfair(struct qspinlock *lock) > +{ > + union arch_qspinlock *qlock = (union arch_qspinlock *)lock;...

...ot; -c "aio_write -P 2 1 1" -c aio_flush $nbd > When run with threads, > nbdkit: file[1]: debug: handshake complete, processing requests with 16 threads > nbdkit: debug: starting worker thread file.0 > nbdkit: debug: starting worker thread file.1 > nbdkit: file.0: debug: acquire unload prevention lock > nbdkit: file.0: debug: pread count=1 offset=0 > nbdkit: debug: starting worker thread file.2 > nbdkit: file.1: debug: acquire unload prevention lock > nbdkit: file.1: debug: pwrite count=1 offset=1 there are definitely two threads that both obtain the unload p...

Everyone, I apologize if this is off topic for this list!!!!! I have an application that I need to acquire, store and merge to a pdf file a digital signature from a client. What favorite equipment do some of you use to do this. I contacted the topaz systems support team, and they advised me their equipment produced a proprietary file type, and required me to sign a non-disclosure agreement to do wha...

The messages are not really useful to us, but they do bloat the debugging output of virt-v2v massively: nbdkit: python[1]: debug: acquire global request lock nbdkit: python[1]: debug: acquire per-connection request lock nbdkit: python[1]: debug: acquire unload prevention lock nbdkit: python[1]: debug: pwrite count=2097152 offset=4628414464 fua=0 nbdkit: python[1]: debug: release unload prevention lock nbdkit: python[1]: debug: relea...

...nable (if a bit disappointing - I would have hoped that qemu would be able to disable disk caches before migration and then reenable them afterwards...). However, the next time I tried migrating the same domain, I got this error message after about 30 seconds: Timed out during operation: cannot acquire state change lock This looks like a bug to me - granted not a high profile one if it only happens when someone is retrying a failed migration, but still... Guido