[Gllug] Disk Errors causing machine to freeze

[Ben Whyte]

Hi

When I am writing to my disk every now and again, the machine stops 
responding for a period.  When I look in syslog I see messages like this

Feb  7 11:18:02 thor kernel: [ 1515.415879] ata1.00: exception Emask 0x0 
SAct 0x0 SErr 0x0 action 0x6 frozen
Feb  7 11:18:02 thor kernel: [ 1515.415896] ata1.00: cmd 
35/00:e0:57:5c:8e/00:03:08:00:00/e0 tag 0 dma 507904 out
Feb  7 11:18:02 thor kernel: [ 1515.415899]          res 
40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
Feb  7 11:18:02 thor kernel: [ 1515.415905] ata1.00: status: { DRDY }
Feb  7 11:18:02 thor kernel: [ 1515.415923] ata1: soft resetting link
Feb  7 11:18:03 thor kernel: [ 1515.964911] ata1.00: configured for UDMA/133
Feb  7 11:18:03 thor kernel: [ 1515.964911] ata1: EH complete
Feb  7 11:18:03 thor kernel: [ 1515.964911] sd 0:0:0:0: [sda] 1953523055 
512-byte hardware sectors (1000204 MB)
Feb  7 11:18:03 thor kernel: [ 1515.964911] sd 0:0:0:0: [sda] Write 
Protect is off
Feb  7 11:18:03 thor kernel: [ 1515.964911] sd 0:0:0:0: [sda] Mode 
Sense: 00 3a 00 00
Feb  7 11:18:03 thor kernel: [ 1515.964911] sd 0:0:0:0: [sda] Write 
cache: enabled, read cache: enabled, doesn't support DPO or FUA
Feb  7 11:21:07 thor kernel: [ 1709.741765] ata1.00: exception Emask 0x0 
SAct 0x0 SErr 0x0 action 0x6 frozen
Feb  7 11:21:07 thor kernel: [ 1709.741780] ata1.00: cmd 
35/00:e8:4f:76:ad/00:01:0a:00:00/e0 tag 0 dma 249856 out
Feb  7 11:21:07 thor kernel: [ 1709.741782]          res 
40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)
Feb  7 11:21:07 thor kernel: [ 1709.741785] ata1.00: status: { DRDY }
Feb  7 11:21:07 thor kernel: [ 1709.741799] ata1: soft resetting link
Feb  7 11:21:08 thor kernel: [ 1710.444091] ata1.00: configured for UDMA/133
Feb  7 11:21:08 thor kernel: [ 1710.444091] ata1: EH complete
Feb  7 11:21:08 thor kernel: [ 1710.444091] sd 0:0:0:0: [sda] 1953523055 
512-byte hardware sectors (1000204 MB)
Feb  7 11:21:08 thor kernel: [ 1710.444091] sd 0:0:0:0: [sda] Write 
Protect is off
Feb  7 11:21:08 thor kernel: [ 1710.444091] sd 0:0:0:0: [sda] Mode 
Sense: 00 3a 00 00
Feb  7 11:21:08 thor kernel: [ 1710.459700] sd 0:0:0:0: [sda] Write 
cache: enabled, read cache: enabled, doesn't support DPO or FUA

So far this appears to cause the hard drive to collect errors and 
eventually for filesystem corruption to occur.

Has anyone seen this sort of thing before and are you able to shed any 
light on what might be happening.

This has been on going for a while now, and I have tried different 
drives and different cables.

Although it may not be immediately obvious its using SATA

Thanks

Ben
-- 
Gllug mailing list  -  Gllug at gllug.org.uk
http://lists.gllug.org.uk/mailman/listinfo/gllug