Re: [ALUG] How to unmount an ext4 file system, journalling makes it permanently busy

On Tue, 2017-01-10 at 14:28 +0000, Chris Green wrote:

Is there any way to unmount an ext4 filesystem without shutting down?

I can do it easily by going to single-user mode or removing the filesystem from /etc/fstab and rebooting but both of these require the system to be shut down.

However it seems to be impossible otherwise because the journalling process makes the filesystem busy. Is this right?

Not to my knowledge. My exchangeable backups disks are all ext4 and "umount /dev/sdd1" works just fine. -- Today is Pungenday, the 13th day of Chaos in the YOLD 3183 I don't have an attitude problem. If you have a problem with my attitude, that's your problem.