On Mon, 2021-02-01 at 16:19 -0800, John Jason Jordan wrote: > About a week ago I finally was successful in creating a RAID0 array > on > my four NVMe drives that are installed in a Thunderbolt 3 enclosure. > After creating the array it appeared in /dev as md0. After rebooting > it > became md127. I copied the UUID from Gparted and used it in a line > that I added to /etc/fstab. > > The array has been working fine ever since I created it, including > copying files to it late last night. This morning I tried to add a > torrent for a distro ISO to Ktorrent, and got an error message that > Ktorrent couldn't add the torrent because the location to copy it to > did not exist. WTH? > > I looked at my GUI file manager and all the files in the array were > listed. I right-clicked on one of them and immediately noticed that > Rename and Delete were no longer listed in the options. After a bit > more poking around I determined that the array had become read-only > overnight. > > I decided to umount it and then re-mount it. The umount command gave > me > 'can't read superblock on /dev/md127p1,' which is what /dev/md0 > became > after rebooting a week ago. However, apparently the umount command > succeeded, because it was no longer mounted. Then I tried to re-mount > it and got the same superblock error message. > > Looking at /dev I see that most everything has changed. NVMe1-3 now > have namespace 2 instead of the 1 that they were when I created the > array. And now nvme5-8 are listed, which don't exist. And only > nvme4n1 > had a partition after I created the array, and now it has two > partitions. > > It looks like I'm going to have to nuke the array, re-make it, and > wait > 24 hours to copy the 10TB of data back to the new array from the NAS > backup. But before I do that I need to find out what went wrong. > Might > there be a defect in one of the NVMe drives? Or might there be a bug > in > mdadm when it tries to create an array out of NVMe media? Or when the > ext4 filesystem was created? I assume that there exists a utility to > check a drive, but I've never done that before. Suggestions? > > I'm considering throwing my computers into the river and doing > something useful with my life. >
Perhaps now would be the time to dig out those old emails and consider some of the native alternatives rejected in favor of RAID0. Just saying, -T _______________________________________________ PLUG: https://pdxlinux.org PLUG mailing list [email protected] http://lists.pdxlinux.org/mailman/listinfo/plug
