hde: dma_timer_expiry: dma status == 0x24

["Michael T. Halligan" <michael@halligan.org>]

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I'm having some pretty major stability issues with 2.6.5 right now.

The   error consistently occurs when backing up using rsnapshot/rsync  
to backup partitions. It is rather reproducible.
This happens both with rsync in daemon mode, as well as rsync over  
NFS. Happened once after a 450mb upload through
a customer's xml-rpc application, which would have been written  
through a webserver, onto an NFS partition.

The only useful log messages I've ever gotten during a crash, only  
going to the console, are :

 hde: dma_timer_expiry: dma status == 0x24


When the crash occurs, the server responds to pings, and tcp sockets  
remain open.

My operating environment is:

Hardware:

HP DL145 G2, Single & Dual Opteron 246s
Dual 80gb Maxtor drives or Dual 400gb Western Digital drives

Software/Configuration

SLES 9 SP2 x86_64
Kernel 2.6.5-7.201-smp
boot options:     append = "resume=/dev/rootvg/swaplv selinux=0  
load_ramdisk=1 acpi=off console=tty0 console=ttyS2,57600 acpi=off  
splash=silent elevator=cfq"
 - or -
boot options:    append = "resume=/dev/rootvg/swaplv selinux=0  
load_ramdisk=1 acpi=off console=tty0 console=ttyS2,57600 apm=off  
splash=silent elevator=cfq insmod=bcm5700"
All partitions, except for /boot, and swap, are reiserfs, on top of  
lvm2, on top of software raid1.

Kernel modules:
sg                     51128  0
sr_mod                 26788  0
ipv6                  317432  23
af_packet              33676  2
dm_snapshot            25016  0
bcm5700               157660  0
sata_nv                18564  0
ata_piix               19204  0
libata                 59656  2 sata_nv,ata_piix
dm_mod                 69344  11 dm_snapshot
raid1                  24704  1
reiserfs              264816  8
sd_mod                 30208  0
scsi_mod              144128  4 sg,sr_mod,libata,sd_mod

Misc related software:
rsync-2.6.2-8.14
rsnapshot-1.2.1-1
bcm5700-8.3.13a-1 (from hp's website)


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