mergerfs - safe to remount?

Hi,

Anybody know if it's okay to remount the generated mergerfs file system? I'm looking for a way to semi-automate switching between direct_io on|off, depending on whether I plan to do mostly writes or mostly reads in a session. Want to avoid rebooting if I can.

mergerfs fstab entry:
/media/9631a1ae-6197-4bce-8359-db150bb7fe85:/media/538c1184-17bd-455f-8455-09c0a7901c70:/media/44e5d790-13ef-4433-a08f-df03683682a3:/media/f0e62054-1871-4bda-85cd-4a108e1667ba:/media/14d8e6d6-81c6-41df-820a-b58d825b5e1e:/media/bca59104-556f-4380-8180-494e9feed56d /media/9b55d2c2-1cc9-40eb-99dd-f9a8032a0f4c fuse.mergerfs defaults,allow_other,direct_io,category.create=epmfs,minfreespace=20G 0 0

remount:
mount /media/9b55d2c2-1cc9-40eb-99dd-f9a8032a0f4c -o remount

I'm thinking of a simple shell script I'd kick off to toggle direct_io in fstab by altering OMV_FSTAB_MNTOPS_MERGERFS in /etc/defaults/openmediavault, then run omv-mkconf fstab, then remount.

Thanks,
Mark M

Thanks!

But it may be that write-cache needs to enabled on the physical disks in conjunction with direct_io .. or that's what I surmise. Maybe I'll enable write-cache on each physical data drive permanently. I've noticed a performance hit when write-cache is enabled (and direct_io not enabled) and I'm reading, but it's not huge.

Unionfilesystem Plugin

Ok, thanks again!

Thanks, appreciate it!