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vmupdate: Send SIGUSR1 to meminfo-writer #179

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Merged
merged 1 commit into from
Jan 22, 2025
Merged

vmupdate: Send SIGUSR1 to meminfo-writer #179

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15 changes: 10 additions & 5 deletions vmupdate/agent/source/plugins/fix_meminfo_writer_label.py
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Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
import subprocess
import os
import signal


def fix_meminfo_writer_label(os_data, log, **kwargs):
Expand Down Expand Up @@ -33,9 +34,13 @@ def fix_meminfo_writer_label(os_data, log, **kwargs):

if label_changed:
try:
subprocess.check_call(
["systemctl", "restart", "qubes-meminfo-writer"]
with open("/run/meminfo-writer.pid", "r", encoding="utf-8") as f:
target_pid = int(f.read().strip())
os.kill(target_pid, signal.SIGUSR1)
log.info(
f"USR1 signal sent to meminfo-writer process id: {target_pid}"
)
except (FileNotFoundError, ValueError, OSError) as e:
log.error(
f"Error sending USR1 signal to meminfo-writer process: {e}"
)
log.info("qubes-meminfo-writer service restarted")
except subprocess.CalledProcessError as e:
log.error(f"Error restarting qubes-meminfo-writer service: {e}")