Public bug reported:
Binary package hint: linux-image-2.6.27-7-server
System is stalling every few seconds for 30 seconds each time. Syslog
repeats following messages:
[ 4842.388413] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
[ 4842.388457] ata1.00: cmd 35/00:08:3f:52:54/00:00:57:00:00/e0 tag 0 dma 4096
out
[ 4842.388460] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4
(timeout)
[ 4842.388531] ata1.00: status: { DRDY }
[ 4842.388557] ata1: hard resetting link
[ 4842.890046] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[ 4843.070073] ata1.00: configured for UDMA/33
[ 4843.070094] ata1: EH complete
[ 4843.087693] sd 0:0:0:0: [sda] 1465149168 512-byte hardware sectors (750156
MB)
[ 4843.087693] sd 0:0:0:0: [sda] Write Protect is off
[ 4843.087693] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[ 4843.128187] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled,
doesn't support DPO or FUA
The message is repeating for every hard disk. I'm running a server with
a RAID 5 containing 8 SATA disks. The system is ubuntu 8.10 32bit server
with kernel 2.6.27-7-server.
The RAID-controller is
02:06.0 SCSI storage controller: Marvell Technology Group Ltd. MV88SX5081
8-port SATA I PCI-X Controller (rev 03)
Flags: bus master, 66MHz, medium devsel, latency 32, IRQ 27
Memory at f6000000 (64-bit, non-prefetchable) [size=512K]
Capabilities: [40] Power Management version 2
Capabilities: [50] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0
Enable-
Capabilities: [60] PCI-X non-bridge device
Kernel driver in use: sata_mv
Kernel modules: sata_mv
There are 8 SATA hard disks (Seagate Barracuda ES, model ST3750641NS)
connected to the RAID controller.
Disabling the write cache for all these hard disks (hdparm -W0 /dev/sd*)
is a working solution for me.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
--
ata*: hard resetting link
https://bugs.launchpad.net/bugs/315912
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