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authorStefan Raspl <stefan.raspl@de.ibm.com>2018-08-24 14:03:57 +0200
committerRadim Krčmář <rkrcmar@redhat.com>2018-08-30 17:15:12 +0200
commit710ab11ad9329d2d4b044405e328c994b19a2aa9 (patch)
tree654adc6f7cef41e5c4083b248043ee842b360701 /tools
parent617c66b9f236d20f11cecbb3f45e6d5675b2fae1 (diff)
downloadlinux-710ab11ad9329d2d4b044405e328c994b19a2aa9.tar.bz2
tools/kvm_stat: fix updates for dead guests
With pid filtering active, when a guest is removed e.g. via virsh shutdown, successive updates produce garbage. Therefore, we add code to detect this case and prevent further body updates. Note that when displaying the help dialog via 'h' in this case, once we exit we're stuck with the 'Collecting data...' message till we remove the filter. Signed-off-by: Stefan Raspl <raspl@linux.ibm.com> Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Diffstat (limited to 'tools')
-rwxr-xr-xtools/kvm/kvm_stat/kvm_stat11
1 files changed, 10 insertions, 1 deletions
diff --git a/tools/kvm/kvm_stat/kvm_stat b/tools/kvm/kvm_stat/kvm_stat
index b9e8d0def1ab..7c92545931e3 100755
--- a/tools/kvm/kvm_stat/kvm_stat
+++ b/tools/kvm/kvm_stat/kvm_stat
@@ -1170,6 +1170,9 @@ class Tui(object):
return sorted_items
+ if not self._is_running_guest(self.stats.pid_filter):
+ # leave final data on screen
+ return
row = 3
self.screen.move(row, 0)
self.screen.clrtobot()
@@ -1327,6 +1330,12 @@ class Tui(object):
msg = '"' + str(val) + '": Invalid value'
self._refresh_header()
+ def _is_running_guest(self, pid):
+ """Check if pid is still a running process."""
+ if not pid:
+ return True
+ return os.path.isdir(os.path.join('/proc/', str(pid)))
+
def _show_vm_selection_by_guest(self):
"""Draws guest selection mask.
@@ -1354,7 +1363,7 @@ class Tui(object):
if not guest or guest == '0':
break
if guest.isdigit():
- if not os.path.isdir(os.path.join('/proc/', guest)):
+ if not self._is_running_guest(guest):
msg = '"' + guest + '": Not a running process'
continue
pid = int(guest)