Troubleshooting while something goes wrong.
Please make sure it is scanned and activated on LVM.
vgscan -v --mknodes vgchange -a y
Now this need to be repaired using xfs_repire command.
There is no single point of command without knowing what is broken.
But from safe to risky it should be.
xfs_repair /dev/mapper/rhel-root xfs_repair -d /dev/mapper/rhel-root # must be followed by root xfs_repair -L /dev/mapper/rhel-root # You will loose the uncommitted log, only use when you can not mount.