On 2/2/21 3:20 PM, John Jason Jordan wrote:
On Tue, 2 Feb 2021 05:50:57 -0800 (PST)
Rich Shepard <[email protected]> dijo:
On Tue, 2 Feb 2021, John Jason Jordan wrote:
And one more thought: I'd consider LVM instead of RAID0. But whatever
system I set up, I need the four 7.68TB NVMe drives to appear as one
big-ass 31TB drive.
That's what LVM does. You have four physical drives. They can be
collected into virtual groups any way you want, including all four in
one group. Then each group (one in your case) can be divided into as
many logical volumes as you want ... one in your case.
That's the way I set up my Mediasonic 4-bay NAS. I now have a single
8TiB volume available.
The process is a bit different from preparing a new drive (hard or
solid state), but one of the URLs I sent lays them out step-by-step.
At the moment everything is working. But I'm pretty sure things
will eventually turn upside down again. My best guess is that one of my
drives is defective, but the failure is intermittent. I need something
to check the disks, sort of like the memtest tool that appears in the
grub menu. I want something that will check every part of each drive,
repeatedly.
smartctl can give you a quick look at drive statistics.
$ smartctl -a /dev/nvme0n1
It's by no means guaranteed to tell you if something is wrong or what
the cause is, but it will probably let you know if there is a major problem.
I haven't completely given up on LVM, and I may end up there
eventually. But while poking around I stumbled on F2FS, a Linux
filesystem for flash drives written by Samsung. Here is the Wikipedia
article:
https://en.wikipedia.org/wiki/F2FS
Opinions welcome!
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