On Mon, 24 Jun 2019 18:00:29 +0100, Peter Humphrey wrote: > > I feel like device-mapper should be its own package that other things > > depend on; LVM, RAID (mdadm, et al.), multi-path, LUKS (cryptsetup). > > Yes, and that would fit the Unix tradition of doing one thing, and > well. It should also be applied to crypt-setup and its friends.
Indeed, all it needs is someone willing to do the work. Now if LVM had been written by Lennart Poettering, there would be a stampede of volunteers to do this, witness eudev. > > > On this box, which does need lvm for RAID-1 on two SSDs: > > Do you /need/ LVM? Or is it extra that comes with device-mapper? > > No, I do actually use lvm to base a raid-1 file system on. I haven't > considered raid-1 without lvm; is that feasible? Of course it is, a RAID1 device is just a block device on which you can put any filesystem you like. RAID and LVM are complementary technologies that work well together, but neither needs the others (apart from the device-mapper bit). -- Neil Bothwick The road to HAL is paved with good intentions.
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