From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alfred Matthews <asm13243546@gmail.com>
Subject: Re: on assembly and recovery of a hardware RAID
Date: Wed, 3 May 2017 15:44:56 +0000
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Sorry to disappear for a bit.

Of necessity I've migrated to another working system and I'm in Arch.
Utility here is fsck.hfs as opposed to hpfsck. I'd like to post that
output.

mdadm --build /dev/md0 --level=0 -n2 --chunk=8K /dev/sdb2 /dev/sdc2

works, then,

fsck.hfs -v /dev/md0
*** Checking volume MDB
  drSigWord      = 0xffffffff
  drCrDate       = Mon Feb  6 06:28:15 2040
  drLsMod        = Mon Feb  6 06:28:15 2040
  drAtrb         = BUSY | HLOCKED | UMOUNTED | BBSPARED | BVINCONSIS |
COPYPROT | SLOCKED
  drNmFls        = 65535
  drVBMSt        = 65535
  drAllocPtr     = 65535
  drNmAlBlks     = 65535
  drAlBlkSiz     = 4294967295
  drClpSiz       = 4294967295
  drAlBlSt       = 65535
  drNxtCNID      = 4294967295
  drFreeBks      = 65535
  drVN           = ""
  drVolBkUp      = Mon Feb  6 06:28:15 2040
  drVSeqNum      = 4294967295
  drWrCnt        = 4294967295
  drXTClpSiz     = 4294967295
  drCTClpSiz     = 4294967295
  drNmRtDirs     = 65535
  drFilCnt       = 4294967295
  drDirCnt       = 4294967295
  drEmbedSigWord = 0xffff
  drEmbedExtent  = 65535[65535..131069]
  drXTFlSize     = 4294967295
  drXTExtRec     =
65535[65535..131069]+65535[65535..131069]+65535[65535..131069]
  drCTFlSize     = 4294967295
  drCTExtRec     =
65535[65535..131069]+65535[65535..131069]+65535[65535..131069]
Bad volume signature (0xffffffff); should be 0x4244. Fix? y
Volume creation date is in the future (Mon Feb  6 06:28:15 2040). Fix? y
Volume last modify date is in the future (Mon Feb  6 06:28:15 2040). Fix? y
Volume bitmap starts at unusual location (1), not 3. Fix? y
*** Checking volume structure
*** Checking extents overflow B*-tree

It's possible that I was unwise in accepting the changes from fsck.

>>
>> How is your C coding?  You could
>>   apt-get source hfsplus
>> and hack the code and try to build it yourself....
>>

Still fine. By now not clear if this is what's needed.

Al