手元の PiKVM をおもむろにアップデートしたらチャタリングじみた事象が出て調査したら Hardware clock が読めてなさそうなため修復する
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| [2023-09-10 18:53:58 kvmd-watchdog.service] --- kvmd.apps.watchdog INFO --- Running watchdog loop on RTC0 ...
[2023-09-10 18:53:58 kvmd-watchdog.service] --- Traceback (most recent call last):
[2023-09-10 18:53:58 kvmd-watchdog.service] --- File "/usr/bin/kvmd-watchdog", line 8, in <module>
[2023-09-10 18:53:58 kvmd-watchdog.service] --- sys.exit(main())
[2023-09-10 18:53:58 kvmd-watchdog.service] --- ^^^^^^
[2023-09-10 18:53:58 kvmd-watchdog.service] --- File "/usr/lib/python3.11/site-packages/kvmd/apps/watchdog/__init__.py", line 121, in main
[2023-09-10 18:53:58 kvmd-watchdog.service] --- options.cmd(config.watchdog)
[2023-09-10 18:53:58 kvmd-watchdog.service] --- File "/usr/lib/python3.11/site-packages/kvmd/apps/watchdog/__init__.py", line 82, in _cmd_run
[2023-09-10 18:53:58 kvmd-watchdog.service] --- _reset_alarm(config.rtc, config.timeout)
[2023-09-10 18:53:58 kvmd-watchdog.service] --- File "/usr/lib/python3.11/site-packages/kvmd/apps/watchdog/__init__.py", line 58, in _reset_alarm
[2023-09-10 18:53:58 kvmd-watchdog.service] --- now = _read_int(rtc, "since_epoch")
[2023-09-10 18:53:58 kvmd-watchdog.service] --- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[2023-09-10 18:53:58 kvmd-watchdog.service] --- File "/usr/lib/python3.11/site-packages/kvmd/apps/watchdog/__init__.py", line 47, in _read_int
[2023-09-10 18:53:58 kvmd-watchdog.service] --- with open(_join_rtc(rtc, key)) as file:
[2023-09-10 18:53:58 kvmd-watchdog.service] --- ^^^^^^^^^^^^^^^^^^^^^^^^^
[2023-09-10 18:53:58 kvmd-watchdog.service] --- FileNotFoundError: [Errno 2] No such file or directory: '/sys/class/rtc/rtc0/since_epoch'
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| [root@pikvm ~]# su -
[root@pikvm ~]# sudo hwclock -v
hwclock from util-linux 2.39.2
System Time: 1694361334.588385
Trying to open: /dev/rtc0
Trying to open: /dev/rtc
Trying to open: /dev/misc/rtc
No usable clock interface found.
hwclock: Cannot access the Hardware Clock via any known method.
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参考情報 ¶
一応公式資料に乗ってるぽいので参考に治す
systemctl disable --now kvmd-watchdog は下記フォーラムを参考にした
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| su -
rw
systemctl disable --now kvmd-watchdog
sed -i'.bk' -e 's/^dtoverlay=i2c-rtc,pcf8563$/dtoverlay=i2c-rtc,ds1307/g' /boot/config.txt
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変更を確認し reboot する
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| [root@pikvm ~]# diff -u0 /boot/config.txt.bk /boot/config.txt
--- /boot/config.txt.bk 2023-09-10 19:03:22.000000000 +0300
+++ /boot/config.txt 2023-09-10 19:04:02.000000000 +0300
@@ -22 +22 @@
-dtoverlay=i2c-rtc,pcf8563
+dtoverlay=i2c-rtc,ds1307
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再起動が完了したら、 Hardware clock を確認する
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| [kvmd-webterm@pikvm ~]$ su -
[root@pikvm ~]# timedatectl
Local time: Mon 2023-09-11 01:08:37 JST
Universal time: Sun 2023-09-10 16:08:37 UTC
RTC time: Sun 2023-09-10 16:08:36
Time zone: Asia/Tokyo (JST, +0900)
System clock synchronized: yes
NTP service: active
RTC in local TZ: no
[root@pikvm ~]# sudo hwclock -w
[root@pikvm ~]# sudo hwclock -r
2023-09-10 19:09:38.656094+03:00
[root@pikvm ~]# ro
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ro で読み取り専用に戻したら終わり。これでチャタリング自称は改善した。