Messages in this thread |  | | Date | Mon, 21 Dec 2015 09:25:47 +0800 | Subject | SATA IO errors after ''block: fix segment split" | From | Ming Lei <> |
| |
Hi,
Both Andre and Diethard reported that the following kind of SATA write IO errors on 32bit(ARM/i386) with PAE after the commit 578270bfb(block: fix segment split):
[ 103.736982] ata1.00: exception Emask 0x0 SAct 0x3ffff0 SErr 0x0 action 0x6 frozen [ 103.744476] ata1.00: failed command: WRITE FPDMA QUEUED [ 103.749707] ata1.00: cmd 61/00:20:48:6b:41/08:00:0a:00:00/40 tag 4 ncq 1048576 out [ 103.749707] res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) [ 103.764659] ata1.00: status: { DRDY }
Unfortunately I can't reproduce the issue on QEMU with i686 plus PAE after runing kinds of IO loads on the AHCI SATA drive.
But the commit 578270bfb(block: fix segment split) is quite simple and straight-forward, and I can't see what is wrong with this change.
Looks size of the faulted I/O is always 1Mbytes in Diethard's reports(it is in private email and I can show that if anyone need the logs), and seems it is highly possiblly related with the commit b54ffb73cadc ("block: remove bio_get_nr_vecs()"), which is another similar SATA report by Linus.
Thanks, Ming Lei
|  |