hi, some others, like me, are struggeling with this problem. afaik, james bottomley (or someone else?) is working on a fix, but it will take some more time. please see [1] and [2]. btw. i asked seagate and adaptec and both did not come up with a decent solution. seagate asked me to verify this with a different controller and said that they know of no issue and adaptec gave me a new sequencer firmware - so at least the server is still responding properly - and told me that all the fixes went into the recent 2.6.25rc6+ kernel. cheers, raoul [1] http://marc.info/?t=120603924200004 [2] http://marc.info/?t=120757821700007 Leonid Kalmankin wrote: > 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 -- ____________________________________________________________________ DI (FH) Raoul Bhatia M.Sc. email. r.bhatia@xxxxxxx Technischer Leiter IPAX - Aloy Bhatia Hava OEG web. http://www.ipax.at Barawitzkagasse 10/2/2/11 email. office@xxxxxxx 1190 Wien tel. +43 1 3670030 FN 277995t HG Wien fax. +43 1 3670030 15 ____________________________________________________________________ -- 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
