Re: hardware recovery and RAID5 services

[David T-G <davidtg+robot@justpickone.org>]

Phil, et al --

...and then Phil Turmel said...
% 
% Hi David, et al,
% 
% The principle of "My Hard Drive Died" is Scott Moulton, a highly respected
% member of the forensics and white-hat scene here in the Atlanta Metro Area.
% 
% https://myharddrivedied.com/

Great to know!  Thanks so much.


% 
% That said, I highly recommend copying the disk showing read errors onto
% another disk, keeping the log of sectors replaced by zeros. Then performing
% a file by file backup from the degraded array, using the copy instead of the
% troubled drive.
[snip]

I think I'm about there now.  I believe I have a "virtual array" 

  diskfarm:/mnt/10Traid50md/tmp # head -4 /proc/mdstat
  Personalities : [raid6] [raid5] [raid4] [raid0] 
  md0 : active (read-only) raid5 loop12[0] loop11[3] loop10[4]
        11720265216 blocks super 1.2 level 5, 512k chunk, algorithm 2 [4/3] [U_UU]
  
  diskfarm:/mnt/10Traid50md/tmp # mdadm -E /dev/md0
  /dev/md0:
     MBR Magic : aa55
  Partition[0] :   4294967295 sectors at            1 (type ee)

which presents me a partition with an ailing XFS filesystem on it.  I'm
hopeful that in my next round of an hour or two I can dig into superblock
adventures.


Thanks to all for all of the input!

:-D
-- 
David T-G
See http://justpickone.org/davidtg/email/
See http://justpickone.org/davidtg/tofu.txt