Re: new Areca driver in 2.6.16-rc6-mm2 appears to be broken

["erich" <erich@areca.com.tw>]

Dear Chris Caputo,

Could you tell me about the file system of testing volume on bonnie++ ?
Does this issue come from different driver update?
I had done more two weeks of long time testing on three machines with 
bonnie++ and iometer benchmark utility.
I have not got this phenomena in ext3 file system and reiserfs filesystem.
But I can reproduce this message immediately on large file "900MB" copy from 
ARECA RAID volume format with ext2 file system.
The ext2 file system seem have this bug after linux kernel version 2.6.3.
I do same operation at linux 2.6.3 , it works fine.
Now I am researching the files system kernel source, I hope you can help me 
to clear up the issue that what's happen with it

Best Regartds
Erich Chen
----- Original Message ----- 
From: "Chris Caputo" <ccaputo@alt.net>
To: "Erich Chen" <erich@areca.com.tw>
Sent: Wednesday, March 22, 2006 7:45 AM
Subject: new Areca driver in 2.6.16-rc6-mm2 appears to be broken


> Erich,
>
> The new Areca driver in 2.6.16-rc6-mm2 is broken as far as I can tell.
>
> I applied the Areca driver in Linux 2.6.16-rc6-mm2 to a 2.6.15.6 as
> follows:
>
>  cd /usr/src
>  wget 
> http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.16-rc6/2.6.16-rc6-mm2/broken-out/areca-raid-linux-scsi-driver.patch
>  wget 
> http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.16-rc6/2.6.16-rc6-mm2/broken-out/areca-raid-linux-scsi-driver-update4.patch
>  cd /usr/src/linux
>  cat ../areca-raid-linux-scsi-driver.patch | patch -p1
>  cat ../areca-raid-linux-scsi-driver-update4.patch | patch -p1
>
> After compiling a new 2.6.15.6 kernel with the driver I was able to boot
> and things appeared fine until I ran a bonnie++ test.  During the test the
> following started spewing endlessly and the system was unusable:
>
>  ...
>  attempt to access beyond end of device
>  sdb1: rw=0, want=134744080, limit=128002016
>  attempt to access beyond end of device
>  sdb1: rw=0, want=134744080, limit=128002016
>  attempt to access beyond end of device
>  sdb1: rw=0, want=134744080, limit=128002016
>  attempt to access beyond end of device
>  sdb1: rw=0, want=134744080, limit=128002016
>  attempt to access beyond end of device
>  sdb1: rw=0, want=134744080, limit=128002016
>  attempt to access beyond end of device
>  sdb1: rw=0, want=134744080, limit=128002016
>  attempt to access beyond end of device
>  sdb1: rw=0, want=134744080, limit=128002016
>  ...
>
> When only "areca-raid-linux-scsi-driver.patch" is used, the system works
> fine for bonnie++ tests and general usage.
>
> The system is as follows:
>
>  AMD Opteron 280 dual-core 2.4ghz.  Revision E6, 256KB L1, 2048KB L2.
>  SuperMicro H8DAE (rev 1.11)
>  8 gigabytes (4 * 2GB PC3200/DDR400 REG ECC)
>  Areca Tekram ARC-1160ML SATAII 16-port multi-lane with 256 megs RAM
>  Areca ARC-6120 Battery Backup Module
>  Four (4) Seagate ST3250823AS 250GB
>  Twelve (12) Western Digital WD2500JD 250GB
>
> Info on the RAID config is below.
>
> Please let me know how I can assist.
>
> Thank you,
> Chris Caputo
>
> ---
>
> # areca rsf info
> Num Name             Disks TotalCap  FreeCap DiskChannels       State
> ===============================================================================
> 1  Raid Set # 00       14 3500.0GB    0.0GB FG3456789ABCDE     Normal
> ===============================================================================
> GuiErrMsg<0x00>: Success.
>
> # areca vsf info
> # Name             Raid# Level   Capacity Ch/Id/Lun  State
> ===============================================================================
> 1 ARC-1160-VOL#00    1   Raid0+1   19.0GB 00/00/00   Normal
> 2 ARC-1160-VOL#01    1   Raid0+1 1731.0GB 00/01/00   Normal
> ===============================================================================
> GuiErrMsg<0x00>: Success.
>
> # areca disk info
> Ch   ModelName        Serial#          FirmRev     Capacity  State
> ===============================================================================
> 1   ST3250823AS      4ND1JKDW         3.03         250.1GB  HotSpare
> 2   ST3250823AS      4ND1HEKE         3.03         250.1GB  HotSpare
> 3   ST3250823AS      4ND1DEFN         3.03         250.1GB  RaidSet 
> Member(1)
> 4   ST3250823AS      4ND1E37B         3.03         250.1GB  RaidSet 
> Member(1)
> 5   WDC WD2500JD-00  WD-WMAEH1416638  02.05D02     250.1GB  RaidSet 
> Member(1)
> 6   WDC WD2500JD-00  WD-WMAEH1415477  02.05D02     250.1GB  RaidSet 
> Member(1)
> 7   WDC WD2500JD-00  WD-WMAEH1408943  02.05D02     250.1GB  RaidSet 
> Member(1)
> 8   WDC WD2500JD-00  WD-WMAEH1428940  02.05D02     250.1GB  RaidSet 
> Member(1)
> 9   WDC WD2500JD-00  WD-WMAEH1416508  02.05D02     250.1GB  RaidSet 
> Member(1)
> 10   WDC WD2500JD-00  WD-WMAEH1416317  02.05D02     250.1GB  RaidSet 
> Member(1)
> 11   WDC WD2500JD-00  WD-WMAEH1596552  02.05D02     250.1GB  RaidSet 
> Member(1)
> 12   WDC WD2500SD-01  WD-WMAL71480351  08.02D08     250.1GB  RaidSet 
> Member(1)
> 13   WDC WD2500JD-00  WD-WMAEH1408933  02.05D02     250.1GB  RaidSet 
> Member(1)
> 14   WDC WD2500JD-00  WD-WMAEH1398573  02.05D02     250.1GB  RaidSet 
> Member(1)
> 15   WDC WD2500JD-00  WD-WMAEH1409027  02.05D02     250.1GB  RaidSet 
> Member(1)
> 16   WDC WD2500SD-01  WD-WMAL72085064  08.02D08     250.1GB  RaidSet 
> Member(1)
> ===============================================================================
> GuiErrMsg<0x00>: Success.