I made a mistake with my mdadm.conf with my debian backup server. I used this command :
mdadm --detail --scan --verbose >> /etc/mdadm/mdadm.conf
to add a raid5 (it works great).
By using double '>>' it write ARRAY AFTER others in file, THAT is my error.
Then, I restarted the server. Now I have a fail at boot
"duplicate MD device on md/0..."
and it load (initramfs) prompt.
I have raids for system boot
md0 & md1
md0 = /dev/sde2 /dev/sdf2
md1 = /dev/sde3 /dev/sdf3
and a md3 raid5 for backups.
md3 = /dev/sda1 /dev/sdb1 /dev/sdc1 /dev/sdd1
the structure of mdadm.conf is :
(I can't show you the real file because i'm not on the same computer..)
ARRAY md/0 ...
ARRAY md/1 ...
ARRAY md/3 ...
ARRAY md/0 ...
ARRAY md/1 ...
so, there is 2 duplicates (md/0 and md/1)
I tried to comment the two last lines, like this :
ARRAY md/0 ...
ARRAY md/1 ...
ARRAY md/3 ...
#ARRAY md/0 ...
#ARRAY md/1 ...
with 'vi' text editor, then ':x' to save and quit. After reboot, the same error,
so I look :
cat /etc/mdadm/mdadm.conf
and I see :
ARRAY md/0 ...
ARRAY md/1 ...
ARRAY md/3 ...
ARRAY md/0 ...
ARRAY md/1 ...
AGAIN. So my mdadm.conf update doesn't seem to be saved by the system.
On another thread I read that I can use :
update-initramfs -u
to update the loader, but this command show me "Not found"
I'm pretty sure the problem come from the two last lines of mdadm.conf. By commenting them, I think it will works again. But WHAT CAN I DO to save the changes ? Because the system is not able to saves it...
Thanks for the help :-)
