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47d56ae546
Add 2 seconds sleep after each forcibly killed/tried-to-kill process in the final process termination loop in sysupgrade stage2. This is needed especially for qualcommax/ipq807x, where ath11k wireless driver may have a long 10-20 seconds delay after termination before actually getting killed. This often breaks sysupgrade. The current KILL loop in kill_remaining does all 10 kill attempts consecutively without any delay, as evidenced here in a failing sysupgrade. It does not allow any time for the process to finalize its internal termination. Sat Sep 2 19:05:56 EEST 2023 upgrade: Sending TERM to remaining processes ... Sat Sep 2 19:05:56 EEST 2023 upgrade: Sending signal TERM to hostapd (2122) Sat Sep 2 19:05:56 EEST 2023 upgrade: Sending signal TERM to hostapd (2138) Sat Sep 2 19:06:00 EEST 2023 upgrade: Sending KILL to remaining processes ... Sat Sep 2 19:06:00 EEST 2023 upgrade: Sending signal KILL to hostapd (2122) Sat Sep 2 19:06:00 EEST 2023 upgrade: Sending signal KILL to hostapd (2138) Sat Sep 2 19:06:00 EEST 2023 upgrade: Sending signal KILL to hostapd (2138) Sat Sep 2 19:06:00 EEST 2023 upgrade: Sending signal KILL to hostapd (2138) Sat Sep 2 19:06:00 EEST 2023 upgrade: Sending signal KILL to hostapd (2138) Sat Sep 2 19:06:00 EEST 2023 upgrade: Sending signal KILL to hostapd (2138) Sat Sep 2 19:06:00 EEST 2023 upgrade: Sending signal KILL to hostapd (2138) Sat Sep 2 19:06:00 EEST 2023 upgrade: Sending signal KILL to hostapd (2138) Sat Sep 2 19:06:00 EEST 2023 upgrade: Sending signal KILL to hostapd (2138) Sat Sep 2 19:06:00 EEST 2023 upgrade: Sending signal KILL to hostapd (2138) Sat Sep 2 19:06:00 EEST 2023 upgrade: Sending signal KILL to hostapd (2138) Sat Sep 2 19:06:00 EEST 2023 upgrade: Failed to kill all processes. sysupgrade aborted with return code: 256 The change in this commit adds a 2 seconds delay after each kill attempt in order to allow some processes to more gracefully handle their internal termination. The result is like this: Sun Sep 3 11:15:10 EEST 2023 upgrade: Sending TERM to remaining processes ... Sun Sep 3 11:15:10 EEST 2023 upgrade: Sending signal TERM to hostapd (2309) Sun Sep 3 11:15:10 EEST 2023 upgrade: Sending signal TERM to hostapd (2324) Sun Sep 3 11:15:14 EEST 2023 upgrade: Sending KILL to remaining processes ... Sun Sep 3 11:15:14 EEST 2023 upgrade: Sending signal KILL to hostapd (2309) [ 699.827521] br-lan: port 7(hn5wpa2r) entered disabled state [ 699.908673] device hn5wpa2r left promiscuous mode [ 699.908721] br-lan: port 7(hn5wpa2r) entered disabled state [ 701.038029] br-lan: port 6(hn5wpa3) entered disabled state Sun Sep 3 11:15:16 EEST 2023 upgrade: Sending signal KILL to hostapd (2324) [ 702.058256] br-lan: port 5(hn2wlan) entered disabled state [ 709.250063] stage2 (8237): drop_caches: 3 Sun Sep 3 11:15:25 EEST 2023 upgrade: Switching to ramdisk... The delay introduced here only kicks in if there is some process that does not get terminated by the first TERM call. Then there is at least one 2 sec wait after the first KILL loop round. This commit is related to discussion in PRs #12235 and #12632 Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi> Reviewed-by: Robert Marko <robimarko@gmail.com> |
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