Promise SX8 Sata Card - mdadm Raid resync stuck at 0.0%

Hi,
I have been trying out a Promise SATAII150 SX8 PCI-X Card and have run into a problem.
mdadm (v2.6-1) is stuck at 0.0% (hours) after a create. Things like trying to format the array or stop the resync causes the terminal to freeze.
Does anyone know of anything that could be causing this?
Also does anyone know how/where to set "max_queue=16" to increase performance for the sx8 module?
Thanks.
sample mdadm line:
mdadm --create /dev/md0 --level=5 --raid-devices=6 /dev/sx8/0p1 ...
i686 Arch
kernel 2.6.19.2
Opteron, 2GB, 6x300GB
dmesg | grep sx8
sx8 version 1.0
sx8(0000:03:02.0): found 6 interesting devices
sx8(0000:03:02.0): port 0 device 586114704 sectors
sx8(0000:03:02.0): port 0 device "Maxtor 7V300F0"
sx8(0000:03:02.0): port 1 device 586114704 sectors
sx8(0000:03:02.0): port 1 device "Maxtor 7V300F0"
sx8(0000:03:02.0): port 2 device 586114704 sectors
sx8(0000:03:02.0): port 2 device "Maxtor 7V300F0"
sx8(0000:03:02.0): port 3 device 586114704 sectors
sx8(0000:03:02.0): port 3 device "Maxtor 7V300F0"
sx8(0000:03:02.0): port 4 device 586114704 sectors
sx8(0000:03:02.0): port 4 device "Maxtor 7V300F0"
sx8(0000:03:02.0): port 5 device 586114704 sectors
sx8(0000:03:02.0): port 5 device "Maxtor 7V300F0"
sx8/0: p1
sx8/1: p1
sx8/2: p1
sx8/3:
sx8/4:
sx8/5:
sx8(0000:03:02.0): 6 ports activated
sx80: pci 0000:03:02.0, ports 8, io fe100000, irq 17, major 160
sx8/3: p1
sx8/4: p1
sx8/5: p1
md: bind<sx8/0p1>
md: bind<sx8/1p1>
md: bind<sx8/2p1>
md: bind<sx8/3p1>
md: bind<sx8/4p1>
md: bind<sx8/5p1>
raid5: device sx8/4p1 operational as raid disk 4
raid5: device sx8/3p1 operational as raid disk 3
raid5: device sx8/2p1 operational as raid disk 2
raid5: device sx8/1p1 operational as raid disk 1
raid5: device sx8/0p1 operational as raid disk 0
disk 0, o:1, dev:sx8/0p1
disk 1, o:1, dev:sx8/1p1
disk 2, o:1, dev:sx8/2p1
disk 3, o:1, dev:sx8/3p1
disk 4, o:1, dev:sx8/4p1
disk 0, o:1, dev:sx8/0p1
disk 1, o:1, dev:sx8/1p1
disk 2, o:1, dev:sx8/2p1
disk 3, o:1, dev:sx8/3p1
disk 4, o:1, dev:sx8/4p1
disk 5, o:1, dev:sx8/5p1
cat /proc/diskstats | grep sx8
160 0 sx8/0 67 485 3988 1428 2 0 8 0 0 444 1428
160 1 sx8/0p1 550 3972 2 8
160 32 sx8/1 62 482 3956 1564 2 0 8 0 0 420 1564
160 33 sx8/1p1 542 3940 2 8
160 64 sx8/2 64 482 3964 1568 2 0 8 4 0 416 1572
160 65 sx8/2p1 544 3948 2 8
160 96 sx8/3 58 484 2444 1196 3 0 16 12 7 3724444 26070260
160 97 sx8/3p1 542 3940 2 8
160 128 sx8/4 56 485 2196 1088 3 0 16 8 8 3724464 29794420
160 129 sx8/4p1 542 3940 2 8
160 160 sx8/5 50 57 460 212 9 210 1504 60 1 3724380 3724396
160 161 sx8/5p1 100 404 219 1744
mdadm --misc --detail /dev/md0
/dev/md0:
Version : 00.90.03
Creation Time : Thu Feb 15 22:44:07 2007
Raid Level : raid5
Array Size : 1465248000 (1397.37 GiB 1500.41 GB)
Used Dev Size : 293049600 (279.47 GiB 300.08 GB)
Raid Devices : 6
Total Devices : 6
Preferred Minor : 0
Persistence : Superblock is persistent
Update Time : Thu Feb 15 22:44:07 2007
State : clean, degraded, recovering
Active Devices : 5
Working Devices : 6
Failed Devices : 0
Spare Devices : 1
Layout : left-symmetric
Chunk Size : 64K
Rebuild Status : 0% complete
UUID : 477c93de:1846baae:2a477155:25972514
Events : 0.1
Number Major Minor RaidDevice State
0 160 1 0 active sync /dev/sx8/0p1
1 160 33 1 active sync /dev/sx8/1p1
2 160 65 2 active sync /dev/sx8/2p1
3 160 97 3 active sync /dev/sx8/3p1
4 160 129 4 active sync /dev/sx8/4p1
6 160 161 5 spare rebuilding /dev/sx8/5p1
cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md0 : active raid5 sx8/5p1[6] sx8/4p1[4] sx8/3p1[3] sx8/2p1[2] sx8/1p1[1] sx8/0p1[0]
1465248000 blocks level 5, 64k chunk, algorithm 2 [6/5] [UUUUU_]
[>....................] recovery = 0.0% (868/293049600) finish=597464.5min speed=3K/sec
unused devices: <none>
Last edited by judfilm (2007-02-15 12:51:47)

Great work vango44!
Here are some RAID performance statistics I gathered while testing RAID on my system. The testing software was Winbench 99. The hard drives tested were new Seagate ST380013AS drives, formatted NTFS. Winbench was running on a third drive that is not included in the tests and should not affect the results.
The drives were reformatted between tests and chkdsk'ed to try and keep things "apples to apples".
No hardware or software changes other than the RAID setup/connections were made between tests.
Higher numbers mean better performance.
I also ran the same tests on the newish WD Raptor 10K drives:
I couldn't stand all the noise the Raptors made, so I returned them.
On my motherboard:
SATA 1 & 2 = Intel RAID controller
SATA 3 & 4 = Promise RAID controller
If the test title does not include "RAID", then it was a single drive test.
Unfortunately, I don't have a spreadsheet version of the above stats. Otherwise I'd create nice bar charts for us and it's would be easier to deduce performance.
Perhaps some kind reader will OCR the pictures, put them into Excel, and make some nice bar charts for us?
Hope the info helps.

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