Crucial Exams

CompTIA Linux+ XK0-006 (V8) Practice Question

A Linux administrator is investigating why users suddenly cannot create files in the /data mount point. The following commands are run:

$ cp /etc/hosts /data/
cp: cannot create regular file '/data/hosts': Read-only file system

$ mount | grep /data
/dev/sdb1 on /data type ext4 (ro,relatime,errors=remount-ro)

$ dmesg | tail
[ 2875.872] EXT4-fs error (device sdb1): ext4_journal_check_start:61: Detected aborted journal
[ 2875.872] EXT4-fs (sdb1): Remounting filesystem read-only

Which of the following actions will MOST likely restore write access to /data while minimizing the risk of further data loss?

  • Recreate the filesystem with mkfs.ext4 /dev/sdb1 and restore the latest backup.

  • Edit /etc/fstab to add the rw option for /data and execute mount -o remount,rw /data.

  • Run chmod -R 777 /data to give all users full permissions on the directory tree.

  • Unmount /data and run fsck.ext4 -f /dev/sdb1, then mount the partition again with its normal options.

CompTIA Linux+ XK0-006 (V8)
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