On Thu, Jul 14, 2016 at 07:12:38PM +0200, Stefan G. Weichinger wrote: > Am 2016-07-13 um 22:19 schrieb Jon LaBadie: > > > I've not used it on Linux, but an Overlay FS (OFS) was introduced > > in the kernel about 2 years ago. With that, your two drives > > could have their own fixed mount points. Then their root dirs > > could be overlayed so both trees appear under a single directory. > > If one drive was not there, only half the vtapes would appear. > > I have to research if it is possible to have both layers writeable. > > I like the udev-rules-way better. > Have the 2 disks in fstab: > Ahh, I finally remembered how I did it when I had vtapes on 2 external usb disks plus part of one internal hd (not the holding disk drive).
Each was mounted wherever, but in the same place each time. What amanda used was a single "changer" dir of "slots" that were symbolic links to the vtape in that slot on its corresponding disk. This too did not change. I think I had about 80 slots (and vtapes), 30 ea on usb and 20 on hd. It did not have to be, but the slot numbering also matched my vtape numbering. If a usb drive was not mounted it just seemed to amanda that the slots were empty. If the usb drive were mounted, but went to sleep due to inactivity, I was pleasently surprised that nothing bad happened. What ever call woke up the disk held and waited for the disk to be available, about 10-15 sec. Jon -- Jon H. LaBadie [email protected] 11226 South Shore Rd. (703) 787-0688 (H) Reston, VA 20190 (703) 935-6720 (C)
