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Old 08-22-2005, 06:24 PM   #1
ryoojin83
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Registered: Aug 2005
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Software RAID-5 Setup Help


I have 4 Seagate 300GB HDDs and a Promise SATAII150 TX4 Controller on a gigabyte motherboard with AMD 1800+. Running Debian Sarge 3.1 with 2.6.12 Kernel

I havebeen struggling with this setup for a few days with no luck.
Here is what I did:

- Compiled new kernel to get support for the TX4
- Partitioned each drive cfdisk as "Linux RAID autodetect"
- Used mdadm to setup a RAID device ("mdadm -C /dev/md0 -v -l 5 -n 4 /dev/sda1 /dev/sdb1 /dev/sdc1 /dev/sdd1" was the exact command)
...it created the device and started the recovery process (i was told I could reboot with no problem at this point and the recovery would continue when it started again . I didn't reboot yet though)
- That all seemed to work just fine, so I used mkfs to create an ext3 filesystem on my RAID-array. ("mkfs -V -t ext3 /dev/md0" was the exact command)
- I added the device to my fstab file and mounted it (I added "/dev/md0 /archives ext3 defaults 0 0") It mounted fine and I could write to it and read from it.

I was excited....BUT

when I restarted my computer I got a "Bad Superblock" error

so i started over and this time let the recovery process continue overnight before I rebooted. It finished and I reboot to the same error...I just don't get it, but I an new to software RAID (maybe this should be in the newbie section)
Thanks for your time.

Last edited by ryoojin83; 08-22-2005 at 06:29 PM.
 
Old 08-22-2005, 07:18 PM   #2
ryoojin83
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...please help
 
Old 08-22-2005, 10:32 PM   #3
friend3141
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I also faced the same problem.
But then I became busy with work, so didnt find much time to do research.

I can suggest a work around.
Dont make rootfs as part of RAID
in fstab configure md0 not to mount on boot

Now it should boot.
Now try mounting your md0. It should mount
 
Old 08-26-2005, 09:21 PM   #4
ryoojin83
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Unhappy ahhhhhh

I cannot get this to work for the LIFE OF ME!

PLEEEAAAASSSSEEEE someone point me in the direction of a write-up on how to make a RAID 5 work.
I have been trying for a WEEK to get this to work and it just doesn't. My superblocks are always "bad" when i reboot and try to mount the RAID. even when I was able to mount and read/write to it before the reboot. I even let the drives fully sync before attempting to reboot. What is the recommended filesystem? what steps should i take to create the array and fs on the array? the steps I took already are above....

ppppplllleeeaaasssseeee help me!

ps. on thing i changed from above was to not add the array to my fstab and then mount it manually after reboot.....didn;t change anything.

Last edited by ryoojin83; 08-26-2005 at 09:23 PM.
 
Old 08-27-2005, 04:40 PM   #5
ryoojin83
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bump

bumpty boo please helpty doo
 
Old 08-27-2005, 04:50 PM   #6
ryoojin83
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Registered: Aug 2005
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looks like the data remains if I recreate the array everytime i boot the computer....
thats not very comforting for storing data safely...chances are ill type a 3 instead of a 4 and loose all my data....not cool...

ANY ideas? I bet its something incredibly stupid and noobish that I'm just forgetting to do...help me?
 
  


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