Hey all, i've been googling for a few hours and can't find a solution that seems to work (permanently.)
See my issue.
Code:
dymonik@sserver:~$ cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
md0 : active raid0 sdf[5] sde[4] sdd[3] sdc[2] sdb[1] sda[0]
46883364864 blocks super 1.2 512k chunks
unused devices: <none>
then, i do a quick reboot....
Code:
dymonik@sserver:~$ sudo reboot
[sudo] password for dymonik:
Connection to XXX.XXX.XXX.XXX closed by remote host.
after reboot.....
Code:
dymonik@sserver:~$ cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
md127 : inactive sde[4](S)
7813894488 blocks super 1.2
unused devices: <none>
dymonik@sserver:~$
ok... strangely, this time it was renamed as md127... which i've seen multiple people have this issue, and they've resolved it. but if you notice, only one of the original 6 drives is showing up on the raid array...
So, i'm going to reinstall as follows.
Code:
dymonik@sserver:~$ cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
md127 : inactive sde[4](S)
7813894488 blocks super 1.2
unused devices: <none>
dymonik@sserver:~$ sudo umount /dev/md0
[sudo] password for dymonik:
umount: /dev/md0: no mount point specified.
dymonik@sserver:~$ sudo umount /dev/md127
umount: /dev/md127: not mounted.
dymonik@sserver:~$ sudo mdadm --stop /dev/md127
mdadm: stopped /dev/md127
dymonik@sserver:~$ lsblk -o NAME,SIZE,FSTYPE,TYPE,MOUNTPOINT
NAME SIZE FSTYPE TYPE MOUNTPOINT
loop0 55.4M squashfs loop /snap/core18/1932
loop1 31.1M squashfs loop /snap/snapd/10707
loop2 55.4M squashfs loop /snap/core18/1944
loop3 69.8M squashfs loop /snap/lxd/19032
loop4 67.8M squashfs loop /snap/lxd/18150
loop5 31M squashfs loop /snap/snapd/9721
sda 7.3T disk
sdb 7.3T disk
sdc 7.3T disk
sdd 7.3T disk
sde 7.3T linux_raid_member disk
sdf 7.3T disk
nvme0n1 465.8G disk
├─nvme0n1p1 1M part
├─nvme0n1p2 1G ext4 part /boot
└─nvme0n1p3 464.8G LVM2_member part
└─ubuntu--vg-ubuntu--lv 200G ext4 lvm /
dymonik@sserver:~$ sudo mdadm --zero-superblock /dev/sde
dymonik@sserver:~$ lsblk -o NAME,SIZE,FSTYPE,TYPE,MOUNTPOINT
NAME SIZE FSTYPE TYPE MOUNTPOINT
loop0 55.4M squashfs loop /snap/core18/1932
loop1 31.1M squashfs loop /snap/snapd/10707
loop2 55.4M squashfs loop /snap/core18/1944
loop3 69.8M squashfs loop /snap/lxd/19032
loop4 67.8M squashfs loop /snap/lxd/18150
loop5 31M squashfs loop /snap/snapd/9721
sda 7.3T disk
sdb 7.3T disk
sdc 7.3T disk
sdd 7.3T disk
sde 7.3T disk
sdf 7.3T disk
nvme0n1 465.8G disk
├─nvme0n1p1 1M part
├─nvme0n1p2 1G ext4 part /boot
└─nvme0n1p3 464.8G LVM2_member part
└─ubuntu--vg-ubuntu--lv 200G ext4 lvm /
dymonik@sserver:~$ sudo nano /etc/fstab
Use "fg" to return to nano.
[1]+ Stopped sudo nano /etc/fstab
dymonik@sserver:~$
Use "fg" to return to nano.
[1]+ Stopped sudo nano /etc/fstab
dymonik@sserver:~$
In sudo nano /etc/fstab i commented out everything..... ^^^
Code:
dymonik@sserver:~$ sudo nano /etc/mdadm/mdadm.conf
same here....^^^
Code:
dymonik@sserver:~$ sudo update-initramfs
-uupdate-initramfs: Generating /boot/initrd.img-5.4.0-62-generic
W: Possible missing firmware /lib/firmware/ast_dp501_fw.bin for module ast
dymonik@sserver:~$ lsblk -o NAME,SIZE,FSTYPE,TYPE,MOUNTPOINT
NAME SIZE FSTYPE TYPE MOUNTPOINT
loop0 55.4M squashfs loop /snap/core18/1932
loop1 31.1M squashfs loop /snap/snapd/10707
loop2 55.4M squashfs loop /snap/core18/1944
loop3 69.8M squashfs loop /snap/lxd/19032
loop4 67.8M squashfs loop /snap/lxd/18150
loop5 31M squashfs loop /snap/snapd/9721
sda 7.3T disk
sdb 7.3T disk
sdc 7.3T disk
sdd 7.3T disk
sde 7.3T disk
sdf 7.3T disk
nvme0n1 465.8G disk
├─nvme0n1p1 1M part
├─nvme0n1p2 1G ext4 part /boot
└─nvme0n1p3 464.8G LVM2_member part
└─ubuntu--vg-ubuntu--lv 200G ext4 lvm /
dymonik@sserver:~$ sudo mdadm --create --verbose /dev/md0 --level=0 --raid-devices=6 /dev/sd[a-f]
mdadm: chunk size defaults to 512K
mdadm: partition table exists on /dev/sda
mdadm: partition table exists on /dev/sda but will be lost or
meaningless after creating array
mdadm: partition table exists on /dev/sdb
mdadm: partition table exists on /dev/sdb but will be lost or
meaningless after creating array
mdadm: partition table exists on /dev/sdc
mdadm: partition table exists on /dev/sdc but will be lost or
meaningless after creating array
mdadm: partition table exists on /dev/sdd
mdadm: partition table exists on /dev/sdd but will be lost or
meaningless after creating array
mdadm: partition table exists on /dev/sde
mdadm: partition table exists on /dev/sde but will be lost or
meaningless after creating array
mdadm: partition table exists on /dev/sdf
mdadm: partition table exists on /dev/sdf but will be lost or
meaningless after creating array
Continue creating array? Y
mdadm: Defaulting to version 1.2 metadata
mdadm: array /dev/md0 started.
dymonik@sserver:~$ cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
md0 : active raid0 sdf[5] sde[4] sdd[3] sdc[2] sdb[1] sda[0]
46883364864 blocks super 1.2 512k chunks
unused devices: <none>
Code:
dymonik@sserver:~$ sudo mkfs.ext4 -F /dev/md0
mke2fs 1.45.5 (07-Jan-2020)
/dev/md0 contains a ext4 file system
last mounted on Thu Jan 21 22:35:56 2021
Creating filesystem with 11720841216 4k blocks and 732553216 inodes
Filesystem UUID: 906e16f3-7e64-46aa-b637-185d6dbdea7e
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
102400000, 214990848, 512000000, 550731776, 644972544, 1934917632,
2560000000, 3855122432, 5804752896
Allocating group tables: done
Writing inode tables: done
Creating journal (262144 blocks): done
Writing superblocks and filesystem accounting information: done
dymonik@sserver:~$ sudo mkdir -p /mnt/md0
dymonik@sserver:~$ sudo mount /dev/md0 /mnt/md0
dymonik@sserver:~$ df -h -x devtmpfs -x tmpfs
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/ubuntu--vg-ubuntu--lv 196G 16G 171G 9% /
/dev/nvme0n1p2 976M 198M 712M 22% /boot
/dev/loop0 56M 56M 0 100% /snap/core18/1932
/dev/loop1 32M 32M 0 100% /snap/snapd/10707
/dev/loop2 56M 56M 0 100% /snap/core18/1944
/dev/loop3 70M 70M 0 100% /snap/lxd/19032
/dev/loop4 68M 68M 0 100% /snap/lxd/18150
/dev/loop5 31M 31M 0 100% /snap/snapd/9721
/dev/md0 44T 24K 42T 1% /mnt/md0
dymonik@sserver:~$ sudo mdadm --detail --scan | sudo tee -a /etc/mdadm/mdadm.conf
ARRAY /dev/md0 metadata=1.2 name=m5farmsserver:0 UUID=79b042cc:b6595ef4:21e2d64d:340f000e
dymonik@sserver:~$ sudo update-initramfs -u
update-initramfs: Generating /boot/initrd.img-5.4.0-62-generic
W: Possible missing firmware /lib/firmware/ast_dp501_fw.bin for module ast
dymonik@sserver:~$ echo '/dev/md0 /mnt/md0 ext4 defaults,nofail,discard 0 0' | sudo tee -a /etc/fstab
/dev/md0 /mnt/md0 ext4 defaults,nofail,discard 0 0
Code:
dymonik@sserver:~$ cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
md0 : active raid0 sdf[5] sde[4] sdd[3] sdc[2] sdb[1] sda[0]
46883364864 blocks super 1.2 512k chunks
seems to have worked? lets check....
Code:
dymonik@sserver:~$ sudo reboot
Connection to xxx.xxx.xxx.xxx closed by remote host.
Code:
Last login: Thu Jan 21 23:05:42 2021 from xxx.xxx.xxx.xxx
dymonik@sserver:~$ cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
md0 : inactive sde[4](S)
7813894488 blocks super 1.2
unused devices: <none>
dymonik@sserver:~$
right back where I started.........
any help would be greatly appreciated!
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