On Mon, Aug 10, 2015 at 5:03 AM, Jan Engelhardt
On Monday 2015-08-10 10:46, C. Brouerius van Nidek wrote:
The problem seems to start after the machine finds the USB camera. ------- Product USB 2.0 PC CAMERA Manufactor ARKMICRO random: non blocking pool is initialized ata 3 : lost interrupt (status 0x50) ata 3.00: exception E mask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen ata 3.00: failed command : READ DMA ata 3.00: cmd c8/00 etc etc....... tag dma 28672 in res 40/00 etc etc.........Emask 0x4 (time out) ata 3.00: status {DRDY} ata 3.00: soft resetting link ata 3.00: configured for UDMA/130 ata 3.01: configured for UDMA/ 100 ata 3.00: device reported invalid CHS sector o ata 3.00: EH complete ata 3: lost interrupt etc. etc
Your disk fails to respond.
I too had an instance some years ago where a power dip ultimately caused a disk write to be interrupted, and ever since, there is a static bad zone in that region of the disk.
Jan, a partial sector write isn't supposed to happen, but you're correct that doesn't mean it doesn't happen. But when it happens it causes the ECC sector metadata to disagree with the sector contents. When the disk controller reads that sector it verifies the ECC and does it's best to correct the error (assuming it is just a few bits). When that fails (as in your case), it generates a media error back to the kernel and it also flags the specific physical sector that is corrupt. None of that is present in the above error messages. Greg -- To unsubscribe, e-mail: opensuse-factory+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-factory+owner@opensuse.org