Current from approximately 0500 BST on 16th September is giving me errors like this from boot:
ad0: WARNING - WRITE_MUL write data underrun 8192>2048 ad0: WARNING - WRITE_MUL write data underrun 8192>6144 ad0: WARNING - WRITE_MUL write data underrun 8192>4096 ad0: WARNING - WRITE_MUL write data underrun 8192>4096
Same for me. From the date on the left you can see how often this happens. I have seen these messages since switching to ATAng (on Sep 3rd) - in PIO mode, since I have an Acer Aladdin based board.
This machine is mostly idle. Even during most of the messages below, there wasn't much disk activity.
Total disk activity since last reboot (5 days ago):
% iostat -I
tty ad0 ad1 cd0 cpu
tin tout KB/t xfrs MB KB/t xfrs MB KB/t xfrs MB us ni sy in id
0 2 11.91 300969 3501.68 5.86 44871 256.99 0.00 0 0.00 3 85 8 4 0
Sep 3 19:37:02 ad0: WARNING - WRITE_MUL write data underrun 8192>4096 Sep 6 06:21:14 ad0: WARNING - WRITE_MUL write data underrun 8192>6144 Sep 6 15:08:59 ata0: resetting devices .. Sep 6 15:08:59 done Sep 6 15:08:59 ad0: TIMEOUT - WRITE_MUL retrying (1 retry left) Sep 8 21:15:04 ad0: WARNING - WRITE_MUL write data underrun 8192>4096 Sep 9 02:34:23 ad0: WARNING - WRITE_MUL write data underrun 8192>6144 Sep 12 14:44:03 ad0: WARNING - WRITE_MUL write data underrun 8192>4096 Sep 13 00:43:55 ad0: WARNING - WRITE_MUL write data underrun 8192>2048 Sep 13 01:15:02 ad0: WARNING - WRITE_MUL write data underrun 8192>4096 Sep 13 03:20:54 ata0: resetting devices .. Sep 13 03:20:55 done Sep 13 03:20:55 ad0: TIMEOUT - WRITE_MUL retrying (1 retry left) Sep 13 15:22:07 ata0: resetting devices .. Sep 13 15:22:07 done Sep 13 15:22:08 ad0: TIMEOUT - WRITE_MUL retrying (1 retry left) Sep 13 16:04:03 ad0: WARNING - WRITE_MUL write data underrun 8192>4096 Sep 13 17:24:09 ad0: WARNING - WRITE_MUL write data underrun 8192>4096 Sep 14 03:23:22 ata0: resetting devices .. Sep 14 03:23:22 done Sep 14 03:23:22 ad0: TIMEOUT - WRITE_MUL retrying (1 retry left) Sep 14 10:00:36 ad0: WARNING - WRITE_MUL write data underrun 8192>4096 Sep 15 04:22:25 ad0: WARNING - WRITE_MUL write data underrun 8192>2048 Sep 17 10:55:17 ad0: WARNING - WRITE_MUL write data underrun 8192>4096 Sep 17 11:35:04 ad0: WARNING - WRITE_MUL write data underrun 8192>4096
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