Problems with raid5

[fvdw]

hopefully it works this time ;)

[samrise]

:punk

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root@nas:/ # df -h
Filesystem                Size      Used Available Use% Mounted on
/dev/root               226.2M    197.3M     16.3M  92% /
/dev/sda1               226.2M    197.3M     16.3M  92% /
/dev/sda5               786.9M      1.1M    777.7M   0% /rw_fs
tmpfs                     4.9M    152.0K      4.7M   3% /rw_fs/tmp/usr/var
/dev/md0                  2.7T     73.1M      2.7T   0% /share/1100
/dev/root               226.2M    168.0M     45.7M  79% /lacie-boot


Finally!! :hail

I cant thank you enough for all your help! You guys are awesome.

I just have one more question. I want to add sda8 to the the array. I have used gdisk to create partitions on all other disks. Should i use gdisk on sda also?

[fvdw]

:mrgreen:

About your question, no you can not use gdisk for sda. See one of my earlier posts. The bootloader of your 5big1 doesn't support gpt partitions, only ms-dos partition tables. If you use gpt on sda it can not boot with this bootlader. You could consider upgrading the bootloader but that is a risk as you need to write a new version of u-boot to flash memory. If it fails then it will be difficult to repair it.

I still wonder why it works now an the other user failed also when using 3.14.2 kernel. Maybe the gpt partition table did the trick.
I am not a raid expert, Jocko can advise if sda8 can be added asit is using the ms-dos partition table of sda

[samrise]

Ok, lets wait for Jocko and see what he has to say. I'm happy as it is anyway!

[Jocko]

Hi samrise,

I just have one more question. I want to add sda8 to the the array. I have used gdisk to create partitions on all other disks. Should i use gdisk on sda also?

I don't know if you can include gpt partitions and ms-dos partition in the same logical raid.
But you can do a try.

[samrise]

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root@nas:/ # mdadm --add /dev/md0 /dev/sda8
mdadm: add new device failed for /dev/sda8 as 4: Invalid argument


But i really dont feel like smashing my head all over again. From what i searched online i have many doubts its possible. It should exist a way since lacie firmware supports raid also.

[b1gnas]

Hi guys,

i read this post so, since my nas still not working, i tried to create a raid 1 with 4 disk (2 active and 2 spare). No problem with the raid 1, then i tried to convert to raid 5 and still no problem, but when i tried grow up the raid5 with the fifth disk i got the same resync low speed that i got earlier, and the nas hanged.

Could it be a problem with raid5 and 5 disks?

i used a fresh fvdw-sl-16-0 firmware installation, i crated raid1 using your guide and then i followed this http://blog.scott.wallace.sh/2007/04/co ... -data.html)

[samrise]

Did you use the new kernel provided?

[b1gnas]

Umh no... i should use this viewtopic.php?p=19521#p19521 ?

[samrise]

Yes. That one worked for me.