On Wed, Aug 31, 2011 at 4:11 PM, <per...@pluto.rain.com> wrote: > Ross <basarev...@gmail.com> wrote: > >> Aug 31 05:13:24 da kernel: ad6: WARNING - READ_DMA UDMA ICRC error >> (retrying request) LBA=107491647 > > That message is reporting a problem in communication between the > drive and the controller (or, perhaps, between the controller and > main memory), not a problem reading the media, so the LBA is likely > not all that useful (esp. since, if you got no other messages, the > retry succeeded so no data was lost). > > What does > > egrep 'ad[0-9]|ata' /var/run/dmesg.boot > > report? >
atapci0: <Intel ICH7 SATA300 controller> port 0x20b8-0x20bf,0x20cc-0x20cf,0x20b0-0x20b7,0x20c8-0x20cb,0x20a0-0x20af mem 0xe0284000-0xe02843ff irq 19 at device 31.2 on pci0 atapci0: [ITHREAD] ata2: <ATA channel 0> on atapci0 ata2: [ITHREAD] ata3: <ATA channel 1> on atapci0 ata3: [ITHREAD] ad4: 238475MB <Seagate ST9250315AS 0001SDM1> at ata2-master UDMA100 SATA ad6: 476940MB <Seagate ST9500325AS 0001SDM1> at ata3-master UDMA100 SATA Trying to mount root from ufs:/dev/ad6s1a >> # dd if=/dev/ad6 of=/dev/null bs=1m seek=107491647 count=1 >> dd: /dev/null: Inappropriate ioctl for device >> >> Another question: why does it fail? > > seek= applies to the output file, so it tried to do a seek on > /dev/null :) You probably wanted skip= (or iseek=). > Thank you :) I have read the man page now. smartd also reports this: Aug 31 10:41:04 da smartd: Device: /dev/ad6, Failed SMART usage Attribute: 184 End-to-End_Error. I found this explanation: http://kb.acronis.com/content/9119 So disk is dying? Or is it cable. I have no physical access to the server at the moment. But still, is there a way to get the filename for LBA? _______________________________________________ firstname.lastname@example.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"