Linux – Centos Failed to mount /sysroot while booting

centoslinux

Whenever I try to boot my CentOS server, it boots in emergency mode and after mounting the partition with command:

$ mount -t ext4 --source /dev/sda4 --target /sysroot

the server boots fine.

How do I permanently mount /dev/sda4 on /sysroot so I don't require to mount it again and again?

Best Answer

The best way to add filesystems to be mounted on boot is /etc/fstab.
See this link for more information: fstab(5)

/dev/sda4 /sysroot ext4 defaults 0 2

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I solved the problem. It was because mkinitrd was called without --with=ext4 option. I posted detailed article to my blog.

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You need to add the noauto option to the filesystem in your fstab. That will prevent the automounter, or anything that calls or simulates a mount -a, from mounting it. However, since auto is part of the defaults option set, you should replace it entirely with the explicit options, minus auto. Pulling the full set from the man page, your new entry should look something like:

/dev/mapper/luks-4fa25d53-0dcd-44ab-9f4d-bee5d6f90fce /sec   ext4    rw,suid,dev,exec,nouser,async,noauto     1 2

Now, whether including dev, suid, and exec are appropriate for your file system is something you should consider.

Best Answer

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