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开机进入了紧急救援模式，提示

Failed to start system check on /dev/disk/by-uuid/***


提示登录后查看以下服务

systemctl status "systemd-fsck@dev-disk-by\\x2duuid-c90f924a\\x2d0d00\\x2d4a22\\x2db52c\\x2d5d87f98d54d6.service""

登录输入以上命令，输出了以下信息

error read block 37748820 （Input/Output error）....
fsck exited with status code 4
run fsck manually

查看一下fsck的错误类型

man fsck
...
              0      No errors
              1      Filesystem errors corrected
              2