修复Linux系统“Read-only file system”错误的解决方案

保哥 • 2024年6月26日 17:29 • 笔记 • 阅读 319

根(/)文件系统在重新引导期间以只读模式挂载，并且多个systemd服务无法启动，并在 /var/log/messages 中出现“Read-only file system”错误。

Sep 22 00:44:15 shizhanxia.com systemd-tmpfiles[1281]: fchmod() of /tmp failed: Read-only file system
Sep 22 00:44:17 shizhanxia.com systemd[1]: chronyd.service: Failed with result 'resources'.
Sep 22 00:44:17 shizhanxia.com systemd[1]: Failed to start NTP client/server.
Sep 22 00:44:17 shizhanxia.com systemd[1]: systemd-shizhanxia.comd.service: Failed to run 'start' task: Read-only file system
Sep 22 00:44:17 shizhanxia.com systemd[1]: systemd-shizhanxia.comd.service: Failed with result 'resources'.
Sep 22 00:44:17 shizhanxia.com systemd[1]: Failed to start shizhanxia.com Service.
Sep 22 00:44:17 shizhanxia.com systemd[1]: systemd-journal-upload.service: Failed to run 'start' task: Read-only file system
Sep 22 00:44:42 shizhanxia.com kdumpctl[1455]: mktemp: failed to create directory via template ‘/tmp/mkdumprd.XXXXXX’: Read-only file system
Sep 22 00:44:48 shizhanxia.com rc.local[1401]: hwclock: cannot open /etc/adjtime: Read-only file system
Sep 22 00:44:48 shizhanxia.com systemd[1]: chronyd.service: Failed to run 'start' task: Read-only file system

检查根文件系统状态

# mount | grep -i ro
/dev/mapper/rhel-root on / type xfs (ro,relatime,seclabel,attr2,inode64,logbufs=8,logbsize=32k,noquota)
# touch testfile
touch: cannot touch 'testfile': Read-only file system

检查systemd-remount-fs服务活动状态。

# systemctl status systemd-remount-fs
● systemd-remount-fs.service - Remount Root and Kernel File Systems
   Loaded: loaded (/usr/lib/systemd/system/systemd-remount-fs.service; static; vendor preset: disabled)
   Active: inactive (dead)
     Docs: man:systemd-remount-fs.service(8)
           https://www.freedesktop.org/wiki/Software/systemd/APIFileSystems

/tmp挂载条目位于/etc/fstab中。

# cat /etc/fstab
/dev/mapper/vg00-lv01    /tmp                    xfs     defaults        0 0

在启动过程中会记录“只读文件系统”错误。

# journalctl | grep Read-only
Sep 22 00:44:15 shizhanxia.com auditd[690]: Couldn't open log file /var/log/audit/audit.log (Read-only file system)
Sep 22 00:44:15 shizhanxia.com systemd-update-utmp[692]: Failed to write utmp record: Read-only file system
Sep 22 00:44:15 shizhanxia.com systemd[1]: chronyd.service: Failed to run 'start' task: Read-only file system
Sep 22 00:44:15 shizhanxia.com systemd[1]: chronyd.service: Failed to run 'stop-post' task: Read-only file system