Hello! We have a system with: vanilla 2.6.25-rc8 (2.6.23, 2.6.24 have the same behaviour) Adaptec AIC-9410W SAS (Razor ASIC RAID) (rev 09) aic94xx: Found sequencer Firmware version 1.1 (V30) (Firmware version 1.1 (V17/10c6) makes no difference) scsi 2:0:0:0: Direct-Access SEAGATE ST3146855SS 0002 PQ: 0 ANSI: 5 It reliably fails under heavy IO: > sas: command 0xffff81022c5f5640, task 0xffff8101f6b0f000, timed out: EH_NOT_HANDLED > sas: command 0xffff81022c5f5500, task 0xffff8101f6b0f1c0, timed out: EH_NOT_HANDLED > .... > sas: Enter sas_scsi_recover_host > sas: trying to find task 0xffff8101f6b0f000 > sas: sas_scsi_find_task: aborting task 0xffff8101f6b0f000 > aic94xx: task 0xffff8101f6b0f000 done with opcode 0x1e resp 0x0 stat 0x8d but aborted by upper layer! > aic94xx: tmf tasklet complete > aic94xx: tmf came back > aic94xx: asd_abort_task: task 0xffff8101f6b0f000 done > aic94xx: task 0xffff8101f6b0f000 aborted, res: 0x0 > sas: sas_scsi_find_task: task 0xffff8101f6b0f000 is done > sas: sas_eh_handle_sas_errors: task 0xffff8101f6b0f000 is done > sas: --- Exit sas_scsi_recover_host Sometimes it successfully recovers; sometimes the disk is lost until the reboot. I've read http://archive.netbsd.se/?ml=linux-scsi&a=2008-01&t=6260524 Asked Seagate about firmware update; they told me they do not have any. As I understood, the root of this problem is protocol errors in disk's firmware (other disks, for example FUJITSU MBA3147RC work fine); however, that kind of errors should be recoverable by sas/aic94xx drivers. If that is true, I could test some patches/ideas, where should I start? -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
