I'm seeing these sorts of messages in syslog output
Mar 12 15:06:10 app3 smartd[519]: Device: /dev/ad4, 6 Currently unreadable (pending) sectors Mar 12 15:06:10 app3 smartd[519]: Device: /dev/ad4, 6 Offline uncorrectable sectors Mar 12 15:29:39 app3 kernel: ad4: FAILURE - READ_DMA status=51<READY,DSC,ERROR> error=40<UNCORRECTABLE> LBA=151607951 Mar 12 15:29:39 app3 kernel: g_vfs_done():ad4s1f[READ(offset=72458502144, length=16384)]error = 5 Mar 12 15:30:25 app3 kernel: ad4: FAILURE - READ_DMA status=51<READY,DSC,ERROR> error=40<UNCORRECTABLE> LBA=151607951 Mar 12 15:30:25 app3 kernel: g_vfs_done():ad4s1f[READ(offset=72458502144, length=16384)]error = 5 Mar 12 15:35:43 app3 smartd[519]: Device: /dev/ad4, 6 Currently unreadable (pending) sectors Mar 12 15:35:43 app3 smartd[519]: Device: /dev/ad4, 6 Offline uncorrectable sectors Mar 12 15:55:03 app3 kernel: ad4: FAILURE - READ_DMA status=51<READY,DSC,ERROR> error=40<UNCORRECTABLE> LBA=151607951 Mar 12 15:55:03 app3 kernel: g_vfs_done():ad4s1f[READ(offset=72458502144, length=114688)]error = 5 Mar 12 16:05:28 app3 smartd[519]: Device: /dev/ad4, 6 Currently unreadable (pending) sectors Mar 12 16:05:28 app3 smartd[519]: Device: /dev/ad4, 6 Offline uncorrectable sectors
by searching through the filesystem I located a file which appears to contain the error. However, I am unable to write to this file (the recommended cure for bad blocks) I used
# dd if=/dev/zero bs=12544487 count=1 of=wow-22048.dmp.gz conv=notrunc dd: wow-22048.dmp.gz: Input/output error 1+0 records in 0+0 records out 0 bytes transferred in 1.894545 secs (0 bytes/sec)
so am I forced to abandon this hard disk or is their some easy way to actually force a write that will make the disk bad block the wrong sectors.
I looked in vain for my old bad blocking tools and indeed it seems lost+found is no longer here. This disk is supposedly only 433 hours old acording to the smartctl output (assuming I do need to regard the Hitachi numbers as being minutes).
Any help would be appreciated. -- Robin Becker _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
