Linux – Read-only root file system – ext3 error

ext3filesystemslinux

I have a problem with ext3 filesystem. It's not writable and I can't remount it.

# echo 1 > /file
-bash: /file: Read-only file system 
# mount
/dev/mapper/VolGroup00-LogVol00 on / type ext3 (rw)
# mount -o remount,rw /
mount: block device /dev/VolGroup00/LogVol00 is write-protected, mounting read-only

Can I fix it without server restart?

Best Answer

If this happened since the machine booted, check dmesg or other system logs for reports of anything terrifying going wrong with the hardware (e.g IO errors reported when accessing the underlying disks) such errors can trigger the kernel to put things into read-only mode until someone (you!) comes along to make a more informed decision.

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