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Fix I/O errors in libvirtd daemon, and hang/crash in remote client upon I/O error
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3a53ab7913
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@ -1,3 +1,12 @@
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Tue Feb 10 11:14:07 GMT 2009 Daniel P. Berrange <berrange@redhat.com>
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Fix I/O errors in libvirtd daemon, and hang/crash in remote
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client upon I/O error.
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* qemud/event.c: Treat POLLNVAL as VIR_EVENT_HANDLE_ERROR
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* src/domain_conf.c: Initialize monitor FD to -1
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* src/remote_internal.c: Remove call object from waitDispatch
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queue upon I/O failure, since call is about to free it.
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Mon Feb 16 17:59:04 EST 2009 Cole Robinson <crobinso@redhat.com>
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* src/virsh.c, src/Makefile.am: Don't pass flags to DumpXML
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@ -657,6 +657,8 @@ virPollEventToEventHandleType(int events)
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ret |= VIR_EVENT_HANDLE_WRITABLE;
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if(events & POLLERR)
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ret |= VIR_EVENT_HANDLE_ERROR;
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if(events & POLLNVAL) /* Treat NVAL as error, since libvirt doesn't distinguish */
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ret |= VIR_EVENT_HANDLE_ERROR;
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if(events & POLLHUP)
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ret |= VIR_EVENT_HANDLE_HANGUP;
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return ret;
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@ -504,6 +504,7 @@ virDomainObjPtr virDomainAssignDef(virConnectPtr conn,
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domain->state = VIR_DOMAIN_SHUTOFF;
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domain->def = def;
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domain->monitor_watch = -1;
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domain->monitor = -1;
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if (VIR_REALLOC_N(doms->objs, doms->count + 1) < 0) {
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virReportOOMError(conn);
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@ -6192,17 +6192,17 @@ processCalls(virConnectPtr conn,
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continue;
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virReportSystemError(in_open ? NULL : conn, errno,
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"%s", _("poll on socket failed"));
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return -1;
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goto error;
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}
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if (fds[0].revents & POLLOUT) {
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if (processCallSend(conn, priv, in_open) < 0)
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return -1;
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goto error;
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}
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if (fds[0].revents & POLLIN) {
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if (processCallRecv(conn, priv, in_open) < 0)
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return -1;
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goto error;
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}
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/* Iterate through waiting threads and if
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@ -6253,9 +6253,21 @@ processCalls(virConnectPtr conn,
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if (fds[0].revents & (POLLHUP | POLLERR)) {
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errorf(in_open ? NULL : conn, VIR_ERR_INTERNAL_ERROR,
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"%s", _("received hangup / error event on socket"));
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return -1;
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goto error;
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}
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}
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error:
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priv->waitDispatch = thiscall->next;
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DEBUG("Giving up the buck due to I/O error %d %p %p", thiscall->proc_nr, thiscall, priv->waitDispatch);
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/* See if someone else is still waiting
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* and if so, then pass the buck ! */
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if (priv->waitDispatch) {
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DEBUG("Passing the buck to %d %p", priv->waitDispatch->proc_nr, priv->waitDispatch);
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virCondSignal(&priv->waitDispatch->cond);
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}
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return -1;
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}
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/*
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