适用于系统盘为SSD数据盘有HDD的情况，实现开机自动解除HDD系统占用，每天4:00~4:30自动同步数据避免系统出错
#!/bin/sh
/share/Public/scripts/disk_standby.sh startPublic中创建scripts目录，向其中放入disk_standby.sh，添加执行权限chmod +x disk_standby.shecho "0 4 * * * /share/Public/scripts/disk_standby.sh readd" >> /etc/config/crontab
echo "30 4 * * * /share/Public/scripts/disk_standby.sh remove" >> /etc/config/crontab
crontab /etc/config/crontab && /etc/init.d/crond.sh restart| #!/bin/bash | |
| MD_DEVICES="md9 md13" | |
| SYS_DEV=$(df $(getcfg SHARE_DEF defVolMP -f /etc/config/def_share.info) | awk '/^\/dev/ {print $1}') | |
| turn_off_swap(){ | |
| echo "Turning off swap on HDD..." | |
| for partition in $(cat /proc/swaps | grep partition | awk '{print $1}'); do | |
| swapoff $partition | |
| done | |
| } | |
| remove_from_raid(){ | |
| for md in $MD_DEVICES; do | |
| echo "Disconnecting HDD from /dev/${md}..." | |
| save= | |
| for partition in $(mdadm -D /dev/${md} | grep 'active sync' | awk 'NF{ print $NF }'); do | |
| disk=${partition//[[:digit:]]/} | |
| disk=${disk#"/dev/"} | |
| if [ $(cat /sys/block/${disk}/queue/rotational) = 1 ]; then | |
| mdadm /dev/${md} --fail ${partition} | |
| save=${save}${partition}$'\n' | |
| fi | |
| done | |
| [ -n "$save" ] && echo -n "$save" > /tmp/disk_standby_${md} | |
| done | |
| } | |
| readd_to_raid(){ | |
| for md in $MD_DEVICES; do | |
| [ ! -f "/tmp/disk_standby_${md}" ] && break | |
| echo "Reconnecting HDD to /dev/${md}..." | |
| for partition in $(cat /tmp/disk_standby_${md}); do | |
| mdadm /dev/${md} --re-add ${partition} | |
| done | |
| rm "/tmp/disk_standby_${md}" | |
| done | |
| } | |
| case "$1" in | |
| start) | |
| turn_off_swap | |
| remove_from_raid | |
| ;; | |
| remove) | |
| remove_from_raid | |
| ;; | |
| readd) | |
| readd_to_raid | |
| ;; | |
| *) | |
| echo "Usage:" | |
| echo " $0 [command]" | |
| echo " command:" | |
| echo " start - turn off swap and remove hdd from raid1." | |
| echo " remove - remove hdd from raid1." | |
| echo " readd - readd hdd to raid1." | |
| exit 0 | |
| ;; | |
| esac |