On 04/20/2010 08:17 PM, Robert Hancock wrote:
On 04/20/2010 08:16 AM, Lennert Buytenhek wrote:On mvsas, when I issue a SMART command (smartctl -a) while a dd from /dev/sda to /dev/null is in progress, I hit the following WARN_ON_ONCE in ata_qc_issue(): if (ata_is_ncq(prot)) { WARN_ON_ONCE(link->sactive& (1<< qc->tag)); if (!link->sactive) ap->nr_active_links++; link->sactive |= 1<< qc->tag; } else { WARN_ON_ONCE(link->sactive); <=============== ap->nr_active_links++; link->active_tag = qc->tag; } This is on 2.6.34-rc4 ish.That would indicate that for some reason, non-NCQ commands aren't being deferred while an NCQ command is in progress. Presumably something wrong in mvsas or libsas code in general..
Yep, definitely a problem in the mvsas (or libsas) area. Jeff -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
