Re: Problem with 5disk RAID5 array - two drives lost

2006-04-25 Thread Tim Bostrom
I just wanted to thank all of you who helped me with this problem. dd_rescue was the ticket. I used Knoppix and dd_rescue to copy the entire /dev/hdf drive to a brand new drive. Took almost 36 hours to copy 250GB. After that, I replaced hdf with the new drive and rebooted the machine bac

Re: Problem with 5disk RAID5 array - two drives lost

2006-04-25 Thread Tim Bostrom
OK, so 952 errors (about 450k) and 25+ hours later, I have a copy of the hdf drive on a brand new 250GB drive thanks to dd_rescue. I haven't tried swapping it to the array. That's the next step. I imagine, I'll be able to mdadm --assemble --force and have it take the 4 drives into the arr

Re: Problem with 5disk RAID5 array - two drives lost

2006-04-24 Thread David Greaves
Arthur Britto wrote: > On Sun, 2006-04-23 at 17:17 -0700, Tim Bostrom wrote: >> I bought two extra 250GB drives - I'll try using dd_rescue as >> recommended and see if I can get a "good" copy of hdf online. > > You might want to use dd_rhelp: > http://www.kalysto.org/utilities/dd_rhelp/index.en.ht

Re: Problem with 5disk RAID5 array - two drives lost

2006-04-23 Thread Arthur Britto
On Sun, 2006-04-23 at 17:17 -0700, Tim Bostrom wrote: > I bought two extra 250GB drives - I'll try using dd_rescue as > recommended and see if I can get a "good" copy of hdf online. You might want to use dd_rhelp: http://www.kalysto.org/utilities/dd_rhelp/index.en.html -Arthur - To unsubscrib

Re: Problem with 5disk RAID5 array - two drives lost

2006-04-23 Thread Tim Bostrom
First let me say - thank you for responding. I'm still trying to figure out this problem. On Apr 21, 2006, at 8:54 PM Apr 21, 2006, Molle Bestefich wrote: Tim Bostrom wrote: It appears that /dev/hdf1 failed this past week and /dev/hdh1 failed back in February. An obvious question woul

Re: Problem with 5disk RAID5 array - two drives lost

2006-04-22 Thread Molle Bestefich
Carlos Carvalho wrote: > What you can also do is dd the disk to another one and try to rebuild > the array with the new disk so that you won't get errors during the > reconstruction. Right, neat hack. > Some people prefer to use ddrescue instead of dd; I've never tried it. I can definitely recom

Re: Problem with 5disk RAID5 array - two drives lost

2006-04-22 Thread David Greaves
Carlos Carvalho wrote: > Molle Bestefich ([EMAIL PROTECTED]) wrote on 22 April 2006 05:54: > >Tim Bostrom wrote: > >> raid5: Disk failure on hdf1, disabling device. > > > >MD doesn't like to find errors when it's rebuilding. > >It will kick that disk off the array, which will cause MD to retur

Re: Problem with 5disk RAID5 array - two drives lost

2006-04-22 Thread Carlos Carvalho
Molle Bestefich ([EMAIL PROTECTED]) wrote on 22 April 2006 05:54: >Tim Bostrom wrote: >> raid5: Disk failure on hdf1, disabling device. > >MD doesn't like to find errors when it's rebuilding. >It will kick that disk off the array, which will cause MD to return >crap (instead of stopping the a

Re: Problem with 5disk RAID5 array - two drives lost

2006-04-22 Thread Molle Bestefich
Tim Bostrom wrote: > It appears that /dev/hdf1 failed this past week and /dev/hdh1 failed back in > February. An obvious question would be, how much have you been altering the contents of the array since February? > I tried a mdadm --assemble --force and was able to get the following: > ===

Problem with 5disk RAID5 array - two drives lost

2006-04-19 Thread Tim Bostrom
Good day, I'm running FC4 kernel 2.6.11-1.1369 with a 5 disk RAID5 array. This past weekend after a reboot to my machine, /dev/md0 will no longer mount and Fedora will abort booting the system and force me to fix the filesystem. Upon further investigation, it looks like I lost two driv