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如何重新安排定期 MD RAID 检查以使其在其他时间开始？

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如何重新安排定期 MD RAID 检查以使其在其他时间开始？

我的 SOHO 服务器（运行 OpenSuSE 15.5）上有一个 MD RAID（级别 10），每周日当地时间凌晨 1:00 进行长时间检查（对于 1 TB 的网络，检查时间超过 3 小时）。由于服务器并非全天候运行，而仅在必要时运行，因此我想重新安排检查时间，以便在更合理的时候启动检查，并且可能每两周只运行一次，而不是每周运行一次。我的系统中显然不再有 Cronjobs，但systemctl支持计划任务，RAID 检查就是其中之一：

╭─root@valen ~  
╰─➤  sudo systemctl list-timers mdcheck_start
NEXT                         LEFT        LAST PASSED UNIT                ACTIVATES            
Sun 2023-09-10 01:00:00 CEST 6 days left n/a  n/a    mdcheck_start.timer mdcheck_start.service

1 timers listed.
Pass --all to see loaded but inactive timers, too.

我怎样才能更改计时器？

更新：显然，我还有第二个有关 MD RAID 检查的计时器：

╭─root@valen ~  
╰─➤  sudo systemctl list-timers mdcheck_continue
NEXT                         LEFT    LAST PASSED UNIT                   ACTIVATES               
Mon 2023-09-04 01:05:00 CEST 6h left n/a  n/a    mdcheck_continue.timer mdcheck_continue.service

1 timers listed.
Pass --all to see loaded but inactive timers, too.

但：该文件systemctl仅向我提供注释：

### Editing /etc/systemd/system/mdcheck_start.timer.d/override.conf
### Anything between here and the comment below will become the new contents of the file

### Lines below this comment will be discarded

### /usr/lib/systemd/system/mdcheck_start.timer
# #  This file is part of mdadm.
# #
# #  mdadm is free software; you can redistribute it and/or modify it
# #  under the terms of the GNU General Public License as published by
# #  the Free Software Foundation; either version 2 of the License, or
# #  (at your option) any later version.
# 
# [Unit]
# Description=MD array scrubbing
# 
# [Timer]
# OnCalendar=Sun *-*-* 1:00:00
# 
# [Install]
# WantedBy= mdmonitor.service
# Also= mdcheck_continue.timer

更新：在上述文件中添加这两行后：

[Timer]
OnCalendar=Sat *-*-* 23:00:00

…RAID 检查现在启动两次，所以我基本上是添加了另一次运行，而不是替换旧运行。为什么？

答案1

好的，显然我找到了解决方案：首先，我必须停止两个计时器，如下所示：

╭─root@valen ~  
╰─➤  systemctl stop mdcheck_continue.timer
╭─root@valen ~  
╰─➤  systemctl stop mdcheck_start.timer

然后我编辑了两个override.conf文件：

╭─root@valen ~  
╰─➤  nano /etc/systemd/system/mdcheck_start.timer.d/override.conf
╭─root@valen ~  
╰─➤  nano /etc/systemd/system/mdcheck_continue.timer.d/override.conf

…如下：

  GNU nano 7.2               /etc/systemd/system/mdcheck_start.timer.d/override.conf                          
[Timer]
OnCalendar=Sun *-*-* 00:00:00

  GNU nano 7.2             /etc/systemd/system/mdcheck_continue.timer.d/override.conf                         
[Timer]
OnCalendar=Sun *-*-* 00:05:00

之后，我当然执行了daemon-reload并重新启动了两个计时器。结果：

╭─root@valen ~  
╰─➤  systemctl list-timers mdcheck_start                   
NEXT                         LEFT        LAST PASSED UNIT                ACTIVATES            
Sun 2023-10-01 00:00:00 CEST 2 days left n/a  n/a    mdcheck_start.timer mdcheck_start.service

1 timers listed.
Pass --all to see loaded but inactive timers, too.
╭─root@valen ~  
╰─➤  systemctl list-timers mdcheck_continue
NEXT                         LEFT          LAST PASSED UNIT                   ACTIVATES               
Fri 2023-09-29 01:05:00 CEST 2h 15min left n/a  n/a    mdcheck_continue.timer mdcheck_continue.service

1 timers listed.
Pass --all to see loaded but inactive timers, too.

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