Debian server is a VMware server host. Each time a VM experiences moderate disk activity I typically see the following messages:
kernel: ata1: EH complete kernel: ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 kernel: ata1.00: (BMDMA stat 0x20) kernel: ata1.00: tag 0 cmd 0x25 Emask 0x1 stat 0x41 err 0x4 (device error) kernel: ata1: EH complete kernel: ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 kernel: ata1.00: (BMDMA stat 0x20) kernel: ata1.00: tag 0 cmd 0x25 Emask 0x1 stat 0x41 err 0x4 (device error) kernel: sd 0:0:0:0: SCSI error: return code = 0x08000002 kernel: sda: Current: sense key: Aborted Command kernel: Additional sense: No additional sense information kernel: end_request: I/O error, dev sda, sector 1378451324 kernel: raid1: sda7: rescheduling sector 1315267616 kernel: ata1: EH complete kernel: SCSI device sda: 1465149168 512-byte hdwr sectors (750156 MB) kernel: sda: Write Protect is off kernel: sda: Mode Sense: 00 3a 00 00 kernel: SCSI device sda: drive cache: write back kernel: SCSI device sda: 1465149168 512-byte hdwr sectors (750156 MB) kernel: sda: Write Protect is off kernel: sda: Mode Sense: 00 3a 00 00 kernel: raid1: sda7: redirecting sector 1315267616 to another mirror kernel: SCSI device sda: drive cache: write back Hardware is as follows: Asus M2N-E Motherboard - NVIDIA nForce 570 Ultra MCP Chipset AMD Athlon(tm) 64 X2 Dual Core Processor 4200+ Host: scsi0 Channel: 00 Id: 00 Lun: 00 Vendor: ATA Model: WDC WD7500AAKS-0 Rev: 30.0 Type: Direct-Access ANSI SCSI revision: 05 Host: scsi1 Channel: 00 Id: 00 Lun: 00 Vendor: ATA Model: WDC WD7500AAKS-0 Rev: 30.0 Type: Direct-Access ANSI SCSI revision: 05 I've run Wester Digital extensive diagnostics against both of the disks and each reports back "No Errors". I don't think I was expierencing this prior to a recent kernel upgrade. Currently the kernel is: 2.6.18-6-amd64 May try to roll kernel back to see if problem occurs.
