My recently installed raid drives disappeared after
Code:
umount /dev/md0
sudo mdadm --stop /dev/md0
how do I start from zero and reformat them? It seems like their disappearance also caused my server to have issues, I cannot even run vim
Code:
-bash: /usr/bin/vim: Input/output error
and even though I was able to shutdown -r the server, now I cant:
Code:
$ sudo shutdown now
Failed to open /dev/initctl: No such device or address
Failed to talk to init daemon.
How I got here:
I tried configuring two hard drives as raid1 following this tutorial:
https://www.linuxbabe.com/linux-serv...e-raid-1-setup
However, I am using ubuntu server 18.04 so Linux RAID autodetect (fd) was not an option. I selected 29 for Linux RAID.
I setup the raid and it looked fine like the tutorial until I tried to create a directory in /mnt/raid1. It would not let me due to permissions and it would not let me chown /mnt/raid1. Running showed the following message on one of the new drives:
Code:
The backup GPT table is corrupt, but the primary appears OK, so that will be used.
The sudo fsdisk-l output was the same as this post https://ubuntuforums.org/showthread.php?t=2361339, so I did:
Code:
sudo umount /dev/md0
sudo mdadm --stop /dev/md0
Then I could no longer see or access the /dev/sdb1 /dev/sdc1 and reassembling md0 failed.
The sudo fdisk -l output now shows all of my original harddrive's partitions and does not show the two new drives. It used to not show all of these partitions:
Code:
$ sudo fdisk -l
Disk /dev/loop0: 212.1 MiB, 222388224 bytes, 434352 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/loop1: 3.1 MiB, 3248128 bytes, 6344 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/loop2: 88.7 MiB, 92983296 bytes, 181608 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/loop3: 89 MiB, 93327360 bytes, 182280 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/loop4: 217.8 MiB, 228388864 bytes, 446072 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/loop5: 3.1 MiB, 3252224 bytes, 6352 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/loop6: 11.7 MiB, 12242944 bytes, 23912 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/sda: 931.5 GiB, 1000204886016 bytes, 1953525168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: AF308587-0A23-464F-9CF7-1C3D17ADA860
Device Start End Sectors Size Type
/dev/sda1 2048 4095 2048 1M BIOS boot
/dev/sda2 4096 2101247 2097152 1G Linux filesystem
/dev/sda3 2101248 1953521663 1951420416 930.5G Linux filesystem
Disk /dev/mapper/ubuntu--vg-ubuntu--lv: 337 GiB, 361842606080 bytes, 706723840 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/mapper/ubuntu--vg-lv--ml: 434.8 GiB, 466876366848 bytes, 911867904 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
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