Failed RMAN backup: Mount: block device/dev/emcpowerc1 is write-protected, mounting read-only

During the inspection today, we found that the RMAN backup of one server was abnormal and failed to be properly backed up for a while. Check the script. The scheduled task list is normal. Check the/var/log/cron content. An exception was reported when I created a 1.txt file on the mount point. Content: Mount: block device/dev/emcpowerc1 is write-protected, mounting read-only. It turns out that the disk is read-only and cannot be written, resulting in backup failure.

Solution: umount/dev/emcpowerc1 Mount/dev/emcpowerc1 re-mount and re-create the file. Everything is normal. OK. Continue to check whether the scheduled task runs normally tonight.