File system trouble with ICH9 controller

[Robin Sommer]

I'm running 8.0-RELEASE-p2 (amd64) on a larger number of Supermicro
SBI-7425C-T3 blades. Each of the blades has 2 x 500GB disks striped
into a single volume via the on-board ICH9 RAID controller. 

However, after running fine for a while (days), the blades crash
eventually with file system problems such as the one below.
Initially I thought that must be a bad disk, but by now 5 different
blades have shown similar problems so I'm suspecting some OS issue. 

Has anybody seen something similar before? Could this be an
incompatibility with the RAID controller (I haven't found much
recent on Google but there are a number of older threads indicating
that it might not be well supported. Not sure though whether those
still apply).  

Any other thoughts?

Thanks,

Robin

--------- syslog -------------------------------------------------------

Jun  9 10:00:02 <user.crit> blade19 kernel: ar0s1a[WRITE(offset=704187858944, length=114688)]error = 5
Jun  9 10:00:02 <user.crit> blade19 kernel: g_vfs_done():ar0s1a[WRITE(offset=704188219392, length=131072)]error = 5
Jun  9 10:00:02 <user.crit> blade19 kernel: g_vfs_done():ar0s1a[WRITE(offset=704188891136, length=114688)]error = 5
Jun  9 10:00:02 <user.crit> blade19 kernel: g_vfs_done():ar0s1a[WRITE(offset=704189382656, length=114688)]error = 5
Jun  9 10:00:02 <user.crit> blade19 kernel: g_vfs_done():ar0s1a[WRITE(offset=704189743104, length=131072)]
Jun  9 10:00:02 <user.crit> blade19 kernel: error = 5

--------- system information  ------------------------------------------

# uname -a
FreeBSD blade5 8.0-RELEASE-p2 FreeBSD 8.0-RELEASE-p2 #0: Tue Jan  5 21:11:58 UTC 2010 root at amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC  amd64

# pciconf -lv | grep SATA
device     = '82801IB/IR/IH (ICH9 Family) SATA RAID Controller'

# atacontrol list
ATA channel 2:
    Master:  ad4 <ST9500325AS/0001SDM1> SATA revision 2.x
    Slave:       no device present
ATA channel 3:
    Master:  ad6 <ST9500325AS/0001SDM1> SATA revision 2.x
    Slave:       no device present

# dmesg | grep ata
atapci0: <Intel ICH9 SATA300 controller> port 0x1c50-0x1c57,0x1c44-0x1c47,0x1c48-0x1c4f,0x1c40-0x1c43,0x18e0-0x18ff mem 0xfcc00000-0xfcc007ff irq 17 at device 31.2 on pci0
atapci0: [ITHREAD]
atapci0: AHCI called from vendor specific driver
atapci0: AHCI v1.20 controller with 6 3Gbps ports, PM supported
ata2: <ATA channel 0> on atapci0
ata2: [ITHREAD]
ata3: <ATA channel 1> on atapci0
ata3: [ITHREAD]
ata4: <ATA channel 2> on atapci0
ata4: stopping AHCI engine failed
ata4: [ITHREAD]
ata5: <ATA channel 3> on atapci0
ata5: stopping AHCI engine failed
ata5: [ITHREAD]
ata6: <ATA channel 4> on atapci0
ata6: [ITHREAD]
ata7: <ATA channel 5> on atapci0
ata7: [ITHREAD]
ad4: 476940MB <Seagate ST9500325AS 0001SDM1> at ata2-master SATA300
ad6: 476940MB <Seagate ST9500325AS 0001SDM1> at ata3-master SATA300
ar0: writing of DDF metadata is NOT supported yet
ar0: disk0 READY using ad4 at ata2-master
ar0: disk1 READY using ad6 at ata3-master


-- 
Robin Sommer * Phone +1 (510) 666-2886 * robin at icir.org 
ICSI/LBNL    * Fax   +1 (510) 666-2956 *   www.icir.org