similar to: Lifecycle of a connection to libvirtd

On Sun, Jul 24, 2016 at 11:13:08PM +0200, Vincent Bernat wrote: >Hey! > >I am trying to figure out how to reliably maintain a connection to >libvirtd. From the documentation, I would expect something like that: > > - virConnectOpen() > - virConnectRegisterCloseCallback() > - virConnectSetKeepAlive() > - Application logic > >And in the registered callback, I would:

Hi In my program , When libvirtd restart , the old libvirtd connection(virConnectPtr) has to reconnect, Before usr old virConnectPtr , I call virConnectIsAlive. but when I restart libvirtd , virConnectIsAlive return 1, and I continue other operate use the old virConnectPtr, program will receive signal pipe. I use libvirt event. before any api use, I call virEventRegisterDefaultImpl, and

Hi Michal, virConnectOpen is for connecting to a host right..? I want to check the host status, whether the connection to the host is active or not.. for that purpose we have to use virConnectIsAlive() I'm using libvirt python bindings, here is the function defnintion. def isAlive(self): """Determine if the connection to the hypervisor is still alive A

Can anyone explain what is happening. After call virConnectOpen virEventRegisterDefaultImpl() call virConnectSetKeepAlive returns VirtError(1): internal error: the caller doesn't support keepalive protocol; perhaps it's missing event loop implementation, but the next call this sequence of commands returns success. Why virConnectSetKeepAlive not work right the first time? -- Fl at sh

Hi, What's the best way to tell if a virConnect object is not good to use anymore? (For example because the libvirtd on the other side crashed/has been stopped or because of some network failure) When I try this, the first API call I do on a broken connection yields an error with error number 38 (VIR_ERR_SYSTEM_ERROR) and all subsequent calls yield an error number 1

When a highly multi-threaded program such as nbdcopy encounters an error, there is a race condition in the library which can cause an assertion failure and thus a core dump: (1) An error occurs on one of the threads. nbdcopy calls exit(3). (2) In lib/errors.c, the destructor calls pthread_key_delete. (3) Another thread which is still running also encounters an error, and inside libnbd the

When a highly multi-threaded program such as nbdcopy encounters an error, there is a race condition in the library which can cause an assertion failure and thus a core dump: (1) An error occurs on one of the threads. nbdcopy calls exit(3). (2) In lib/errors.c, the destructor calls pthread_key_delete. (3) Another thread which is still running also encounters an error, and inside libnbd the

When a highly multi-threaded program such as nbdcopy encounters an error, there is a race condition in the library which can cause an assertion failure and thus a core dump: (1) An error occurs on one of the threads. nbdcopy calls exit(3). (2) In lib/errors.c, the destructor calls pthread_key_delete. (3) Another thread which is still running also encounters an error, and inside libnbd the

On Thu, Mar 09, 2023 at 08:44:51AM +0000, Richard W.M. Jones wrote: > When a highly multi-threaded program such as nbdcopy encounters an > error, there is a race condition in the library which can cause an > assertion failure and thus a core dump: > > (1) An error occurs on one of the threads. nbdcopy calls exit(3). > > (2) In lib/errors.c, the destructor calls

Hi, Using libvirt how can we check the status of a remote/local host machine.. isAlive() method is giving true even if the internet connection is broken OR libvirt demon in the remote machine is being stopped. so isAlive() does not seems to be handy, Is there some other way to get the status of remote host..? Thanks -Sijo

Hallo I am not familiar with any of packages you use (except of MASS and ggplot2) and the code is too complicated without any hint where the error could come from and what is the message you get. I wonder if anybody would like to go through your whole code. 1. data seems to be read correctly ICUData <- read.csv(file = "ICUData.csv", stringsAsFactors = TRUE) ICUData.neuro <-

Hi R-Helpers, Sorry to bother you, but I have a simple task that I can't figure out how to do. For example, I have some names in two columns NamesWide<-data.frame(Name1=c("Tom","Dick"),Name2=c("Larry","Curly")) and I simply want to get a single column

Hello, using the `unsplit()` function with tibbles currently leads to the following error: > mtcars_tb <- as_tibble(mtcars, rownames = NULL) > s <- split(mtcars_tb, mtcars_tb$gear) > unsplit(s, mtcars_tb$gear) Error: Must subset rows with a valid subscript vector. ? Logical subscripts must match the size of the indexed input. x Input has size 15 but subscript `rep(NA, len)` has

POSIX allows but does not require ENOTSUP and EOPNOTSUPP to map to the same errno value. This patch has no impact on Linux, but does affect other systems: we want to be permissive in what we accept (either spelling, since the two are commonly confused), while strict in what we generate (we documented EOPNOTSUPP as the trigger to fall back to .write, so stick to that internally where it makes

We permit the following constructs in libguestfs code: if (guestfs_some_call (g) == -1) { fprintf (stderr, "failed: error is %s\n", guestfs_last_error (g)); } and: guestfs_push_error_handler (g, NULL, NULL); guestfs_some_call (g); guestfs_pop_error_handler (g); Neither of these would be safe if we allowed the handle to be used from threads concurrently, since the error

We permit the following constructs in libguestfs code: if (guestfs_some_call (g) == -1) { fprintf (stderr, "failed: error is %s\n", guestfs_last_error (g)); } and: guestfs_push_error_handler (g, NULL, NULL); guestfs_some_call (g); guestfs_pop_error_handler (g); Neither of these would be safe if we allowed the handle to be used from threads concurrently, since the error

At Tue, 1 Apr 2014 17:29:25 +0400, Fl@sh wrote: > > Can anyone explain what is happening. > After call > virConnectOpen > virEventRegisterDefaultImpl() > call virConnectSetKeepAlive returns > VirtError(1): internal error: the caller doesn't > support keepalive protocol; perhaps it's missing > event loop implementation, > but the next call this sequence

Hi, When I want to start a VM by virsh, report error: virsh start vm1 2013-09-18 05:52:06.809+0000: 12324: info : libvirt version: 1.1.1, package: 1.mcp8_0.1 (Koji, 2013-08-09-07:55:01, lnxmcp1) 2013-09-18 05:52:06.809+0000: 12324: debug : virLogParseOutputs:1334 : outputs=1:file:/var/log/virsh.log error: Failed to start domain vm1 error: End of file while reading data: Input/output error

I ran into these while trying to prepare patches to add NBD_CMD_FLAG_FAST_ZERO, which will expose a new NBD_ENOTSUP wire value. Eric Blake (2): plugins: Don't lose original error when emulating FUA plugins: Permit ENOTSUP as synonym for EOPNOTSUPP docs/nbdkit-filter.pod | 11 ++++++----- docs/nbdkit-plugin.pod | 12 +++++++----- plugins/file/file.c | 16 +++++++++++-----

I get the sentiment, but this is really just bad coding (on my own part, I suspect), so we might as well just fix it... -pd > On 21 Nov 2020, at 17:42 , Marc Schwartz via R-devel <r-devel at r-project.org> wrote: > > >> On Nov 21, 2020, at 10:55 AM, Mario Annau <mario.annau at gmail.com> wrote: >> >> Hello, >> >> using the `unsplit()`