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fix lxc-wait waiting forever for FREEZING, FROZEN, THAWED states
These states are kept by the kernel in the freezer.state cgroup item, and are never set in handler->state with lxc_set_state(). If lxc transitions a container to/from the freezer after an lxc-wait for one of the above states has already started, the lxc-wait will never see the new state. This change has lxc send the new state to the lxc-monitor socket. Signed-off-by: Dwight Engen <dwight.engen@oracle.com> Acked-by: Stéphane Graber <stgraber@ubuntu.com>
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@ -32,6 +32,8 @@
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#include <sys/param.h>
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#include "error.h"
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#include "state.h"
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#include "monitor.h"
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#include <lxc/log.h>
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#include <lxc/cgroup.h>
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@ -95,7 +97,10 @@ static int freeze_unfreeze(const char *name, int freeze)
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ret = strncmp(f, tmpf, strlen(f));
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if (!ret)
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{
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lxc_monitor_send_state(name, freeze ? FROZEN : THAWED);
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break; /* Success */
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}
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sleep(1);
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@ -119,6 +124,7 @@ out:
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int lxc_freeze(const char *name)
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{
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lxc_monitor_send_state(name, FREEZING);
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return freeze_unfreeze(name, 1);
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}
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@ -70,7 +70,7 @@ Options :\n\
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-n, --name=NAME NAME for name of the container\n\
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-s, --state=STATE ORed states to wait for\n\
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STOPPED, STARTING, RUNNING, STOPPING,\n\
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ABORTING, FREEZING, FROZEN\n\
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ABORTING, FREEZING, FROZEN, THAWED\n\
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-t, --timeout=TMO Seconds to wait for state changes\n",
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.options = my_longopts,
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.parser = my_parser,
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