Note for Neil/Dan:
This email could be long and boring, the attached patch prevents a
segfault on 3.0.3 and 3.1.1, at least have a look at it.
Hello,
I have this system at home I use for dev/testing/leisure/whatever.
it has an asus mb with an embedded intel 82801 sata fakeraid (imsm) with
two WD10EADS 1T disks.
I created a mirrored container with two volumes, first one windows the
second linux.
Yesterday windows crashed, no surprise there, the surprise was that
after the crash the controller marked the first drive as failed, instead
of running the usual verify.
I readded the drive from the windows storage manager console, and since
it told me rebuild would take 50+ hours i decided to leave it going.
(the windows software is idiotic, it tries to rebuild both volumes in
parallel)
In the morning i found the drive failed rebuild, so i replaced it (will
do some tests on it and rma when i have spare time).
In order to avoid waiting 50 hours to see if it finished i decided to
try rebuilding it under linux, the linux box used dmraid instead of
mdadm and was obviously unable to boot (did i ever mention redhat/fedora
mkinitrd sucks).
I booted linux from a rescue cd and rebuilt the raid using mdadm 3.0.2.
It took only 3 hours.
now real trouble started
After reboot the intel bios showed both drives as "Offline Member"
back to the rescue cd. mdadm 3.0.2 activated the container but the two
volumes were activated using only /dev/sda (NOTE: this is the new drive
i put in this same morning, not the old one)
Seeing that mdadm 3.0.3 had some fixes related to imsm i built that
instead and tried activating the array. unfortunately it segfaulted,
tried 3.1.1: same segfault
fire gdb, bt
found in super-intel.c around line 2430 a call to
disk_list_get with the serial of /dev/sdb as first argument, which fails
returning null.
created the attached patch and rebuilt mdadm.
still it activated the container with two drives and the volume with
only one.
i lost my patience and mdadm -r /dev/md/imsm0 /dev/sdb, mdadm -a ....
it is now rebuilding
i still have to see what bios thinks of the raid when i reboot
attached, besides the patch are
mdadm -Dsvv and mdadm -Esvv before and after the hot-remove-add, in case
someone has an idea about what might had happened.
Regards,
L.
--
Luca Berra -- bluca@xxxxxxxxxx
Communication Media & Services S.r.l.
/"\
\ / ASCII RIBBON CAMPAIGN
X AGAINST HTML MAIL
/ \
--- super-intel.c.old 2009-12-22 17:53:56.154622836 +0000
+++ super-intel.c 2009-12-22 17:53:54.362629847 +0000
@@ -2428,6 +2428,7 @@
struct intel_disk *idisk;
idisk = disk_list_get(dl->serial, disk_list);
+ if(idisk) {
if (is_spare(&idisk->disk) &&
!is_failed(&idisk->disk) && !is_configured(&idisk->disk))
dl->index = -1;
@@ -2435,6 +2436,7 @@
dl->index = -2;
continue;
}
+ }
}
dl->next = champion->disks;
/dev/md/imsm0:
Version : imsm
Raid Level : container
Total Devices : 2
Update Time : Tue Dec 22 17:59:45 2009
Working Devices : 2
UUID : bee71637:467b6ae8:e1cf2626:185271b8
Member Arrays :
Number Major Minor RaidDevice
0 8 16 - /dev/sdb
1 8 0 - /dev/sda
/dev/md/Volume0_0:
Container : /dev/md/127, member 0
Raid Level : raid1
Array Size : 488636416 (466.00 GiB 500.36 GB)
Used Dev Size : 488636548 (466.00 GiB 500.36 GB)
Raid Devices : 2
Total Devices : 2
Update Time : Tue Dec 22 17:58:39 2009
State : clean, degraded
Active Devices : 1
Working Devices : 2
Failed Devices : 0
Spare Devices : 1
New Level : raid0
New Chunksize : 1K
UUID : 5ee03c91:f3537647:88da79af:38833b16
Number Major Minor RaidDevice State
0 8 0 0 active sync /dev/sda
2 8 16 1 spare rebuilding /dev/sdb
/dev/md/Volume1_0:
Container : /dev/md/127, member 1
Raid Level : raid1
Array Size : 488121344 (465.51 GiB 499.84 GB)
Used Dev Size : 488121476 (465.51 GiB 499.84 GB)
Raid Devices : 2
Total Devices : 2
Update Time : Tue Dec 22 17:58:39 2009
State : clean, degraded, recovering
Active Devices : 1
Working Devices : 2
Failed Devices : 0
Spare Devices : 1
Reshape Status : 0% complete
New Level : raid0
New Chunksize : 1K
UUID : 81598ffc:8420e261:bf676997:6c7a894f
Number Major Minor RaidDevice State
0 8 0 0 active sync /dev/sda
2 8 16 1 spare rebuilding /dev/sdb
/dev/md/imsm0:
Version : imsm
Raid Level : container
Total Devices : 2
Working Devices : 2
UUID : bee71637:467b6ae8:e1cf2626:185271b8
Member Arrays :
Number Major Minor RaidDevice
0 8 16 - /dev/sdb
1 8 0 - /dev/sda
/dev/md/Volume0_0:
Container : /dev/md/127, member 0
Raid Level : raid1
Array Size : 488636416 (466.00 GiB 500.36 GB)
Used Dev Size : 488636548 (466.00 GiB 500.36 GB)
Raid Devices : 2
Total Devices : 1
Update Time : Tue Dec 22 17:57:04 2009
State : clean, degraded
Active Devices : 1
Working Devices : 1
Failed Devices : 0
Spare Devices : 0
New Level : raid0
New Chunksize : 1K
UUID : 5ee03c91:f3537647:88da79af:38833b16
Number Major Minor RaidDevice State
0 8 0 0 active sync /dev/sda
1 0 0 1 removed
/dev/md/Volume1_0:
Container : /dev/md/127, member 1
Raid Level : raid1
Array Size : 488121344 (465.51 GiB 499.84 GB)
Used Dev Size : 488121476 (465.51 GiB 499.84 GB)
Raid Devices : 2
Total Devices : 1
Update Time : Tue Dec 22 17:57:04 2009
State : clean, degraded
Active Devices : 1
Working Devices : 1
Failed Devices : 0
Spare Devices : 0
New Level : raid0
New Chunksize : 1K
UUID : 81598ffc:8420e261:bf676997:6c7a894f
Number Major Minor RaidDevice State
0 8 0 0 active sync /dev/sda
1 0 0 1 removed
/dev/sdb:
Magic : Intel Raid ISM Cfg Sig.
Version : 1.2.00
Orig Family : 1f641b4c
Family : 0822300e
Generation : 000312e2
UUID : bee71637:467b6ae8:e1cf2626:185271b8
Checksum : c6d838da correct
MPB Sectors : 2
Disks : 2
RAID Devices : 2
Disk01 Serial : WD-WCAV51580865
State : active
Id : 00000000
Usable Size : 1953520654 (931.51 GiB 1000.20 GB)
[Volume0]:
UUID : 5ee03c91:f3537647:88da79af:38833b16
RAID Level : 1
Members : 2
This Slot : 1 (out-of-sync)
Array Size : 977272832 (466.00 GiB 500.36 GB)
Per Dev Size : 977273096 (466.00 GiB 500.36 GB)
Sector Offset : 0
Num Stripes : 3817472
Chunk Size : 64 KiB
Reserved : 0
Migrate State : migrating: rebuilding
Map State : normal <-- degraded
Dirty State : clean
[Volume1]:
UUID : 81598ffc:8420e261:bf676997:6c7a894f
RAID Level : 1
Members : 2
This Slot : 1 (out-of-sync)
Array Size : 976242688 (465.51 GiB 499.84 GB)
Per Dev Size : 976242952 (465.51 GiB 499.84 GB)
Sector Offset : 977277192
Num Stripes : 3813448
Chunk Size : 64 KiB
Reserved : 0
Migrate State : migrating: rebuilding
Map State : uninitialized <-- degraded
Dirty State : clean
Disk00 Serial : WD-WCAV51580780
State : active
Id : 00000000
Usable Size : 1953520654 (931.51 GiB 1000.20 GB)
/dev/sda:
Magic : Intel Raid ISM Cfg Sig.
Version : 1.2.00
Orig Family : 1f641b4c
Family : 0822300e
Generation : 000312e2
UUID : bee71637:467b6ae8:e1cf2626:185271b8
Checksum : c6d838da correct
MPB Sectors : 2
Disks : 2
RAID Devices : 2
Disk00 Serial : WD-WCAV51580780
State : active
Id : 00000000
Usable Size : 1953520654 (931.51 GiB 1000.20 GB)
[Volume0]:
UUID : 5ee03c91:f3537647:88da79af:38833b16
RAID Level : 1
Members : 2
This Slot : 0
Array Size : 977272832 (466.00 GiB 500.36 GB)
Per Dev Size : 977273096 (466.00 GiB 500.36 GB)
Sector Offset : 0
Num Stripes : 3817472
Chunk Size : 64 KiB
Reserved : 0
Migrate State : migrating: rebuilding
Map State : normal <-- degraded
Dirty State : clean
[Volume1]:
UUID : 81598ffc:8420e261:bf676997:6c7a894f
RAID Level : 1
Members : 2
This Slot : 0
Array Size : 976242688 (465.51 GiB 499.84 GB)
Per Dev Size : 976242952 (465.51 GiB 499.84 GB)
Sector Offset : 977277192
Num Stripes : 3813448
Chunk Size : 64 KiB
Reserved : 0
Migrate State : migrating: rebuilding
Map State : uninitialized <-- degraded
Dirty State : clean
Disk01 Serial : WD-WCAV51580865
State : active
Id : 00000000
Usable Size : 1953520654 (931.51 GiB 1000.20 GB)
/dev/md127:
Magic : Intel Raid ISM Cfg Sig.
Version : 1.2.00
Orig Family : 1f641b4c
Family : 0822300e
Generation : 000312e2
UUID : bee71637:467b6ae8:e1cf2626:185271b8
Checksum : c6d838da correct
MPB Sectors : 2
Disks : 2
RAID Devices : 2
Disk01 Serial : WD-WCAV51580865
State : active
Id : 00000000
Usable Size : 1953520654 (931.51 GiB 1000.20 GB)
[Volume0]:
UUID : 5ee03c91:f3537647:88da79af:38833b16
RAID Level : 1
Members : 2
This Slot : 1 (out-of-sync)
Array Size : 977272832 (466.00 GiB 500.36 GB)
Per Dev Size : 977273096 (466.00 GiB 500.36 GB)
Sector Offset : 0
Num Stripes : 3817472
Chunk Size : 64 KiB
Reserved : 0
Migrate State : migrating: rebuilding
Map State : normal <-- degraded
Dirty State : clean
[Volume1]:
UUID : 81598ffc:8420e261:bf676997:6c7a894f
RAID Level : 1
Members : 2
This Slot : 1 (out-of-sync)
Array Size : 976242688 (465.51 GiB 499.84 GB)
Per Dev Size : 976242952 (465.51 GiB 499.84 GB)
Sector Offset : 977277192
Num Stripes : 3813448
Chunk Size : 64 KiB
Reserved : 0
Migrate State : migrating: rebuilding
Map State : uninitialized <-- degraded
Dirty State : clean
Disk00 Serial : WD-WCAV51580780
State : active
Id : 00000000
Usable Size : 1953520654 (931.51 GiB 1000.20 GB)
/dev/sdb:
Magic : Intel Raid ISM Cfg Sig.
Version : 1.2.00
Orig Family : 1f641b4c
Family : b2ac231a
Generation : 000312b0
UUID : bee71637:467b6ae8:e1cf2626:185271b8
Checksum : 0085890a correct
MPB Sectors : 2
Disks : 1
RAID Devices : 2
[Volume0]:
UUID : 5ee03c91:f3537647:88da79af:38833b16
RAID Level : 1
Members : 2
This Slot : ?
Array Size : 977272832 (466.00 GiB 500.36 GB)
Per Dev Size : 977273096 (466.00 GiB 500.36 GB)
Sector Offset : 0
Num Stripes : 3817472
Chunk Size : 64 KiB
Reserved : 0
Migrate State : idle
Map State : normal
Dirty State : clean
[Volume1]:
UUID : 81598ffc:8420e261:bf676997:6c7a894f
RAID Level : 1
Members : 2
This Slot : ?
Array Size : 976242688 (465.51 GiB 499.84 GB)
Per Dev Size : 976242952 (465.51 GiB 499.84 GB)
Sector Offset : 977277192
Num Stripes : 3813448
Chunk Size : 64 KiB
Reserved : 0
Migrate State : migrating: rebuilding
Map State : uninitialized <-- degraded
Dirty State : clean
Disk00 Serial : WD-WCAV51580780
State : active
Id : 00000000
Usable Size : 1953520654 (931.51 GiB 1000.20 GB)
/dev/sda:
Magic : Intel Raid ISM Cfg Sig.
Version : 1.2.00
Orig Family : 1f641b4c
Family : b2ac231a
Generation : 000312dc
UUID : bee71637:467b6ae8:e1cf2626:185271b8
Checksum : 00858936 correct
MPB Sectors : 2
Disks : 1
RAID Devices : 2
Disk00 Serial : WD-WCAV51580780
State : active
Id : 00000000
Usable Size : 1953520654 (931.51 GiB 1000.20 GB)
[Volume0]:
UUID : 5ee03c91:f3537647:88da79af:38833b16
RAID Level : 1
Members : 2
This Slot : 0
Array Size : 977272832 (466.00 GiB 500.36 GB)
Per Dev Size : 977273096 (466.00 GiB 500.36 GB)
Sector Offset : 0
Num Stripes : 3817472
Chunk Size : 64 KiB
Reserved : 0
Migrate State : idle
Map State : normal
Dirty State : clean
[Volume1]:
UUID : 81598ffc:8420e261:bf676997:6c7a894f
RAID Level : 1
Members : 2
This Slot : 0
Array Size : 976242688 (465.51 GiB 499.84 GB)
Per Dev Size : 976242952 (465.51 GiB 499.84 GB)
Sector Offset : 977277192
Num Stripes : 3813448
Chunk Size : 64 KiB
Reserved : 0
Migrate State : migrating: rebuilding
Map State : uninitialized <-- degraded
Dirty State : clean
/dev/md127:
Magic : Intel Raid ISM Cfg Sig.
Version : 1.2.00
Orig Family : 1f641b4c
Family : b2ac231a
Generation : 000312dc
UUID : bee71637:467b6ae8:e1cf2626:185271b8
Checksum : 00858936 correct
MPB Sectors : 2
Disks : 1
RAID Devices : 2
[Volume0]:
UUID : 5ee03c91:f3537647:88da79af:38833b16
RAID Level : 1
Members : 2
This Slot : ?
Array Size : 977272832 (466.00 GiB 500.36 GB)
Per Dev Size : 977273096 (466.00 GiB 500.36 GB)
Sector Offset : 0
Num Stripes : 3817472
Chunk Size : 64 KiB
Reserved : 0
Migrate State : idle
Map State : normal
Dirty State : clean
[Volume1]:
UUID : 81598ffc:8420e261:bf676997:6c7a894f
RAID Level : 1
Members : 2
This Slot : ?
Array Size : 976242688 (465.51 GiB 499.84 GB)
Per Dev Size : 976242952 (465.51 GiB 499.84 GB)
Sector Offset : 977277192
Num Stripes : 3813448
Chunk Size : 64 KiB
Reserved : 0
Migrate State : migrating: rebuilding
Map State : uninitialized <-- degraded
Dirty State : clean
Disk00 Serial : WD-WCAV51580780
State : active
Id : 00000000
Usable Size : 1953520654 (931.51 GiB 1000.20 GB)
