OK, I think I am up and running again without any data loss.With the help of this post, the thread it is referencing and my newborn daughter on my chest for good luck I did the following:sudo mdadm --zero-superblock /dev/sdd1 /dev/sdb1 /dev/sdc1 /dev/sde1I then recreated the array:sudo mdadm --create -v -l 5 -n 4 --assume-clean /dev/md0 /dev/sdd1 /dev/sdb1 /dev/sdc1 /dev/sde1
mdadm: layout defaul
Hi there:
Thanks for reading this thread and I thank you in advance for any help you can provide.
So this is what happened... I noticed that my MDADM RAID 5 array with drives ordered: /dev/sd[EFGHIABCDKJ]1 reported a failed drive -- /dev/sdb1. I stopped the array and ran smartctl -t long /dev/sdb1 and received a pass.
I have an issue with a new mdadm raid.
When i try to:
root@dys:~# mdadm --add --verbose /dev/md0 /dev/sdb1
mdadm: Cannot open /dev/sdb1: Device or resource busy
dmraid i pointed as the usual problem but it's not even installed.
Also tried to check it with lsof and no result.
Im just out of ideeas
the output of /proc/mdstat if of any help:
root@dys:~# cat /proc/mdstat
Personalities : [raid1
Hi All,
I have been trying to create a USB RAID 5 using mdadm tool on Joli OS 1.2 (Ubuntu) but with no luck. I cannot even get pass the creation of array device (/dev/md0) and superblock.
Hi
No longer able to access my raid, not sure what caused this, but im not able to start it either, help!
mdadm -E /dev/md0
mdadm: no md superblock detected on /dev/md0
mdadm -D /dev/md0
mdadm: md device /dev/md0 does not appear to be active
cat /proc/mdstat shows
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
md0: inactive sdb1[2](S) sdc1[1](S)
Tried to look for similar cases but can't find anything similar.
I had a system with 4 disks:
OS debian:
- /dev/sda
RAID:
- /dev/sdb
- /dev/sdc
- /dev/sdd
The old system disk crashed, so I installed a new one and retried to resync the array.
It took two hours to resync the RAID, but I'm unable to mount it.
Hi All, I'm having a bit of a time with MDADM. Basically I have a RAID6 system setup w/ 10 hard drives (1.5GB). Last night I had a failed drive and i accidentally failed out the wrong drive trying to fix it. Right now I can get the array to assemble successfully but I cant read anything off of md0, it can't mount either.
After reinstallation of my OS, I decide to manually assemble a RAID6 array.
# mdadm --assemble --auto=yes --scan=auto /dev/md0
I don't exactly remember a message but program mdadm return a resizing raid array.
$ more /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md0 : active raid6 sdc1[0] sdf17 sdh1[6] sdd1[5] sdg1[4] sda1[3] sdi1[2] sdb1[1]
4883799680 blocks level 6, 64k chunk, algor
I created a raid 1+0 via mdadm by the following...
mdadm -v --create /dev/md2 --level=raid1 --raid-devices=2 /dev/sde1 /dev/sdf1mdadm -v --create /dev/md3 --level=raid1 --raid-devices=2 /dev/sdg1 /dev/sdh1
mdadm -v --create /dev/md1 --level=raid0 --raid-devices=2 /dev/md2 /dev/md3
...then finished it off by adding the output of mdadm --detail --scan to /etc/mdadm/mdadm.conf and did a mkfs.xfs on
Email this page
