[Bug 305011] [NEW] dmraid rc15 isw raid 10 "could not find disk in metadata"

[indy2718]

Public bug reported:

Binary package hint: dmraid

I have raid 10 (or Intel says I have raid 10).   Removing debian patch
07_isw-raid10-nested.dpatch from dmraid rc14 made my raid setup unusable
(dmraid could not find metadata on startup).  I have intrepid, I created
a jaunty partition and debootstraped it. These are the results for
dmraid rc15, it fails for me.

Reference bugs:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=494278
https://bugs.launchpad.net/bugs/276095
https://bugs.launchpad.net/bugs/292302

root at thermal:/jaunty-root# chroot /jaunty-root/
root at thermal:/# ls -l /dev/sd*
brw-rw---- 1 root root 8,  0 Dec  4 01:29 /dev/sda
brw-rw---- 1 root root 8,  1 Dec  4 01:29 /dev/sda1
brw-rw---- 1 root root 8,  2 Dec  4 01:29 /dev/sda2
brw-rw---- 1 root root 8,  3 Dec  4 01:29 /dev/sda3
brw-rw---- 1 root root 8, 16 Dec  4 01:29 /dev/sdb
brw-rw---- 1 root root 8, 17 Dec  4 01:29 /dev/sdb1
brw-rw---- 1 root root 8, 18 Dec  4 01:29 /dev/sdb2
brw-rw---- 1 root root 8, 19 Dec  4 01:29 /dev/sdb3
brw-rw---- 1 root disk 8, 32 Dec  4 01:29 /dev/sdc
brw-rw---- 1 root disk 8, 48 Dec  4 01:29 /dev/sdd
root at thermal:/# dmraid --version
dmraid version:		1.0.0.rc15 (2008-09-17) shared 
dmraid library version:	1.0.0.rc15 (2008.09.17)
device-mapper version:	4.14.0
root at thermal:/# dmraid -r
ERROR: isw: Could not find disk /dev/sdd in the metadata
ERROR: isw: Could not find disk /dev/sdc in the metadata
ERROR: isw: Could not find disk /dev/sdb in the metadata
ERROR: isw: Could not find disk /dev/sda in the metadata
no raid disks
root at thermal:/# dmraid -rD 
ERROR: isw: Could not find disk /dev/sdd in the metadata
ERROR: isw: Could not find disk /dev/sdc in the metadata
ERROR: isw: Could not find disk /dev/sdb in the metadata
ERROR: isw: Could not find disk /dev/sda in the metadata
no raid disks
root at thermal:/# fdisk -lu /dev/sda
Warning: invalid flag 0x0000 of partition table 5 will be corrected by w(rite)

Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Disk identifier: 0x7e7498c6

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048   512002047   256000000    7  HPFS/NTFS
/dev/sda2       512002048  1560586229   524292091    5  Extended
/dev/sda3      1560586230  1953536129   196474950   83  Linux
root at thermal:/# dd if=/dev/sda of=sda_isw.dat skip=976773165 bs=512
3+0 records in
3+0 records out
1536 bytes (1.5 kB) copied, 4.1766e-05 s, 36.8 MB/s
root at thermal:/# dd if=/dev/sdb of=sdb_isw.dat skip=976773165 bs=512
3+0 records in
3+0 records out
1536 bytes (1.5 kB) copied, 3.9186e-05 s, 39.2 MB/s
root at thermal:/# dd if=/dev/sdc of=sdc_isw.dat skip=976773165 bs=512
3+0 records in
3+0 records out
1536 bytes (1.5 kB) copied, 3.5643e-05 s, 43.1 MB/s
root at thermal:/# dd if=/dev/sdd of=sdd_isw.dat skip=976773165 bs=512
3+0 records in
3+0 records out
1536 bytes (1.5 kB) copied, 6.0754e-05 s, 25.3 MB/s

** Affects: dmraid (Ubuntu)
     Importance: Undecided
         Status: New

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dmraid rc15 isw raid 10 "could not find disk in metadata"
https://bugs.launchpad.net/bugs/305011
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