I have two 1TB disk that have been running in raid1 with the
intel-p67-built-in controller. Those were created in bios (uefi;
imsm-raids) and are actually fake(software) raids. Windows sees only
his own (ntfs) raid and everything is fine. Under linux I set the
partition type to 0xfd (linux auto raid) and mdadm can successfully
see and access the linux raid partion.
However I cannot access my windows-raid-partition (/dev/md126p2 on
/dev/sd[bc]) from within linux and get the following error: "md126: p2
size 209711104 extends beyond EOD, truncated"
Looking into the data, I see that my windows-raid-partition has
actually 4! partitions on it. This should be wrong. This what
mdadm-3.2.6 says about my disks under kernel-3.6.8.fc17.x86_64:
===========================================
[root@localhost]# mdadm -E /dev/md127
/dev/md127:
Magic : Intel Raid ISM Cfg Sig.
Version : 1.1.00
Orig Family : 88e429ad
Family : 1e27d1ba
Generation : 0001ad23
Attributes : All supported
UUID : 516f8fc8:bd5e663f:c254ea22:d30bb530
Checksum : 2438ebf9 correct
MPB Sectors : 1
Disks : 2
RAID Devices : 1
Disk00 Serial : WD-XXXXXXXXXXXX
State : active
Id : 00000002
Usable Size : 1953519880 (931.51 GiB 1000.20 GB)
[Volume0]:
UUID : fa85ec01:25e9c177:da74f1e6:03284c35
RAID Level : 1
Members : 2
Slots : [UU]
Failed disk : none
This Slot : 0
Array Size : 1953519616 (931.51 GiB 1000.20 GB)
Per Dev Size : 1953519880 (931.51 GiB 1000.20 GB)
Sector Offset : 0
Num Stripes : 7630936
Chunk Size : 64 KiB
Reserved : 0
Migrate State : idle
Map State : normal
Dirty State : clean
Disk01 Serial : WD-XXXXXXXXXXXX
State : active
Id : 00000003
Usable Size : 1953519880 (931.51 GiB 1000.20 GB)
===========================================
[root@localhost]# mdadm -D /dev/md127
/dev/md127:
Version : imsm
Raid Level : container
Total Devices : 2
Working Devices : 2
UUID : 516f8fc8:bd5e663f:c254ea22:d30bb530
Member Arrays : /dev/md/Volume0
Number Major Minor RaidDevice
0 8 32 - /dev/sdc
1 8 16 - /dev/sdb
===========================================
[root@localhost]# mdadm -E /dev/md126
/dev/md126:
MBR Magic : aa55
Partition[0] : 1743810560 sectors at 2048 (type fd)
Partition[1] : 209711104 sectors at 1743812608 (type 07)
===========================================
[root@localhost]# mdadm -D /dev/md126
/dev/md126:
Container : /dev/md127, member 0
Raid Level : raid1
Array Size : 976759808 (931.51 GiB 1000.20 GB)
Used Dev Size : 976759940 (931.51 GiB 1000.20 GB)
Raid Devices : 2
Total Devices : 2
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
UUID : fa85ec01:25e9c177:da74f1e6:03284c35
Number Major Minor RaidDevice State
1 8 16 0 active sync /dev/sdb
0 8 32 1 active sync /dev/sdc
===========================================
[root@localhost]# mdadm -E /dev/md126p1
===========================================
[root@localhost]# mdadm -D /dev/md126p1
/dev/md126p1:
Container : /dev/md127, member 0
Raid Level : raid1
Array Size : 871905280 (831.51 GiB 892.83 GB)
Used Dev Size : 976759940 (931.51 GiB 1000.20 GB)
Raid Devices : 2
Total Devices : 2
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
UUID : fa85ec01:25e9c177:da74f1e6:03284c35
Number Major Minor RaidDevice State
1 8 16 0 active sync /dev/sdb
0 8 32 1 active sync /dev/sdc
===========================================
[root@localhost]# mdadm -E /dev/md126p2
/dev/md126p2:
MBR Magic : aa55
Partition[0] : 1917848077 sectors at 6579571 (type 70)
Partition[1] : 1818575915 sectors at 1953251627 (type 43)
Partition[2] : 10 sectors at 225735265 (type 72)
Partition[3] : 51890 sectors at 2642411520 (type 00)
===========================================
[root@localhost]# mdadm -D /dev/md126p2
/dev/md126p2:
Container : /dev/md127, member 0
Raid Level : raid1
Array Size : 104853504 (100.00 GiB 107.37 GB)
Used Dev Size : 976759940 (931.51 GiB 1000.20 GB)
Raid Devices : 2
Total Devices : 2
State : clean
Active Devices : 2
Working Devices : 2
Failed Devices : 0
Spare Devices : 0
UUID : fa85ec01:25e9c177:da74f1e6:03284c35
Number Major Minor RaidDevice State
1 8 16 0 active sync /dev/sdb
0 8 32 1 active sync /dev/sdc
===========================================
[root@localhost]# mdadm -E /dev/sdb
/dev/sdb:
Magic : Intel Raid ISM Cfg Sig.
Version : 1.1.00
Orig Family : 88e429ad
Family : 1e27d1ba
Generation : 0001ad29
Attributes : All supported
UUID : 516f8fc8:bd5e663f:c254ea22:d30bb530
Checksum : 2438ebff correct
MPB Sectors : 1
Disks : 2
RAID Devices : 1
Disk00 Serial : WD-XXXXXXXXXXXX
State : active
Id : 00000002
Usable Size : 1953519880 (931.51 GiB 1000.20 GB)
[Volume0]:
UUID : fa85ec01:25e9c177:da74f1e6:03284c35
RAID Level : 1
Members : 2
Slots : [UU]
Failed disk : none
This Slot : 0
Array Size : 1953519616 (931.51 GiB 1000.20 GB)
Per Dev Size : 1953519880 (931.51 GiB 1000.20 GB)
Sector Offset : 0
Num Stripes : 7630936
Chunk Size : 64 KiB
Reserved : 0
Migrate State : idle
Map State : normal
Dirty State : clean
Disk01 Serial : WD-XXXXXXXXXXXX
State : active
Id : 00000003
Usable Size : 1953519880 (931.51 GiB 1000.20 GB)
===========================================
[root@localhost]# mdadm -E /dev/sdc
/dev/sdc:
Magic : Intel Raid ISM Cfg Sig.
Version : 1.1.00
Orig Family : 88e429ad
Family : 1e27d1ba
Generation : 0001ad29
Attributes : All supported
UUID : 516f8fc8:bd5e663f:c254ea22:d30bb530
Checksum : 2438ebff correct
MPB Sectors : 1
Disks : 2
RAID Devices : 1
Disk01 Serial : WD-XXXXXXXXXXXX
State : active
Id : 00000003
Usable Size : 1953519880 (931.51 GiB 1000.20 GB)
[Volume0]:
UUID : fa85ec01:25e9c177:da74f1e6:03284c35
RAID Level : 1
Members : 2
Slots : [UU]
Failed disk : none
This Slot : 1
Array Size : 1953519616 (931.51 GiB 1000.20 GB)
Per Dev Size : 1953519880 (931.51 GiB 1000.20 GB)
Sector Offset : 0
Num Stripes : 7630936
Chunk Size : 64 KiB
Reserved : 0
Migrate State : idle
Map State : normal
Dirty State : clean
Disk00 Serial : WD-XXXXXXXXXXXX
State : active
Id : 00000002
Usable Size : 1953519880 (931.51 GiB 1000.20 GB)
===========================================
[root@localhost]# cat /proc/mdstat
Personalities : [raid1]
md126 : active raid1 sdb[1] sdc[0]
976759808 blocks super external:/md127/0 [2/2] [UU]
md127 : inactive sdb[1](S) sdc[0](S)
5288 blocks super external:imsm
unused devices: <none>
===========================================
[root@localhost]# cat /proc/partitions
major minor #blocks name
7 0 16 loop0
7 1 2796 loop1
7 2 900352 loop2
7 3 10485760 loop3
7 4 524288 loop4
8 0 62522712 sda
8 1 18350080 sda1
8 2 44171264 sda2
8 16 976762584 sdb
8 32 976762584 sdc
11 0 1048575 sr0
8 48 3903488 sdd
8 49 3903456 sdd1
253 0 10485760 dm-0
253 1 10485760 dm-1
9 126 976759808 md126
259 0 871905280 md126p1
259 1 104853504 md126p2
8 64 2002943 sde
8 65 2002942 sde1
===========================================
[root@localhost]# mdadm --examine --scan
ARRAY metadata=imsm UUID=516f8fc8:bd5e663f:c254ea22:d30bb530
ARRAY /dev/md/Volume0 container=516f8fc8:bd5e663f:c254ea22:d30bb530
member=0 UUID=fa85ec01:25e9c177:da74f1e6:03284c35
===========================================
[root@localhost]# mdadm --detail --scan
ARRAY /dev/md127 metadata=imsm UUID=516f8fc8:bd5e663f:c254ea22:d30bb530
ARRAY /dev/md/Volume0 container=/dev/md127 member=0
UUID=fa85ec01:25e9c177:da74f1e6:03284c35
===========================================
[root@localhost]# dmesg |grep md
[ 0.000000] Command line: initrd=initrd0.img
root=live:UUID=406D-2540 rootfstype=vfat ro liveimg quiet rhgb
rd.luks=0 rd.md=0 rd.dm=0 BOOT_IMAGE=vmlinuz0
[ 0.000000] Kernel command line: initrd=initrd0.img
root=live:UUID=406D-2540 rootfstype=vfat ro liveimg quiet rhgb
rd.luks=0 rd.md=0 rd.dm=0 BOOT_IMAGE=vmlinuz0
[ 1.277784] dracut: rd.md=0: removing MD RAID activation
[ 6.231138] md: bind<sdb>
[ 6.434862] md: bind<sdc>
[ 6.440260] md: bind<sdc>
[ 6.440383] md: bind<sdb>
[ 6.453438] md: raid1 personality registered for level 1
[ 6.453654] md/raid1:md126: active with 2 out of 2 mirrors
[ 6.453678] md126: detected capacity change from 0 to 1000202043392
[ 6.460137] md126: p1 p2
[ 6.460268] md126: p2 size 209711104 extends beyond EOD, truncated
[ 6.464890] md: md126 switched to read-write mode.
[ 6.675396] md: export_rdev(sdc)
[ 6.675454] md: export_rdev(sdb)
[ 84.923953] md: export_rdev(sdc)
[ 84.924017] md: export_rdev(sdb)
[ 93.473151] md126: detected capacity change from 1000202043392 to 0
[ 93.473228] md: md126 stopped.
[ 93.473236] md: unbind<sdb>
[ 93.479847] md: export_rdev(sdb)
[ 93.479858] md: unbind<sdc>
[ 93.486826] md: export_rdev(sdc)
[ 93.493682] md: md126 stopped.
[ 95.923141] md: md127 stopped.
[ 95.923151] md: unbind<sdc>
[ 95.927344] md: export_rdev(sdc)
[ 95.927504] md: unbind<sdb>
[ 95.936313] md: export_rdev(sdb)
[ 824.206594] md: md127 stopped.
[ 824.210398] md: bind<sdc>
[ 824.210840] md: bind<sdb>
[ 824.241537] md: bind<sdc>
[ 824.241612] md: bind<sdb>
[ 824.245817] md/raid1:md126: active with 2 out of 2 mirrors
[ 824.245829] md126: detected capacity change from 0 to 1000202043392
[ 824.247377] md126: p1 p2
[ 824.247545] md126: p2 size 209711104 extends beyond EOD, truncated
[ 824.261049] md: md126 switched to read-write mode.
[ 824.304567] md: export_rdev(sdc)
[ 824.304594] md: export_rdev(sdb)
[ 824.320417] md: export_rdev(sdc)
[ 824.320444] md: export_rdev(sdb)
[ 1161.533446] EXT4-fs (md126p1): warning: maximal mount count
reached, running e2fsck is recommended
[ 1161.573164] EXT4-fs (md126p1): mounted filesystem with ordered data
mode. Opts: (null)
[ 1161.573169] SELinux: initialized (dev md126p1, type ext4), uses xattr
===========================================
Can someone take a look at why mdadm cannot access the windows-raid-partition?
--joshua
--
To unsubscribe from this list: send the line "unsubscribe linux-raid" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
