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[dhcp_relay] add retry to checking process dhcprelayd #25470

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Merged
yxieca merged 1 commit into from
Mar 21, 2026
Merged

[dhcp_relay] add retry to checking process dhcprelayd #25470

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20 changes: 14 additions & 6 deletions src/sonic-dhcp-utilities/dhcp_utilities/dhcprelayd/dhcprelayd.py
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Original file line number Diff line number Diff line change
Expand Up @@ -230,12 +230,20 @@ def _check_dhcp_relay_processes(self):
"""
procs = {}
for proc in psutil.process_iter():
try:
if proc.name() != "dhcrelay":
continue
procs[proc.pid] = [proc.ppid(), proc.cmdline()]
except psutil.NoSuchProcess:
continue
err = None
for i in range(5):
err = None
try:
if proc.name() == "dhcrelay":
procs[proc.pid] = [proc.ppid(), proc.cmdline()]
except psutil.NoSuchProcess:
pass
except Exception as e:
err = e
if err is None:
break
if err:
raise err

# When there is network io, dhcrelay would create child process to proceed them, psutil has chance to get
# duplicated cmdline. Hence ignore chlid process in here
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