Re: sata_promise: port is slow to respond, reset failed

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On Sun, 02 Sep 2007 13:12:42 +0200, Peter Favrholdt wrote:
> I'm still experiencing the same "port is slow to respond" problem using 
> sata_promise in linux-2.6.22.6 with my Promise Technology, Inc. PDC40718 
> (SATA 300 TX4) (rev 02) and 4 Seagate 500GB ES drives:
>          Model Number:       ST3500630NS
>          Firmware Revision:  3.AEE
>          (with 1.5/3.0Gbps jumper removed = 3.0Gbps)
> 
> After doing:
> 
> dd if=/dev/sda of=/dev/null bs=1M &
> dd if=/dev/sdb of=/dev/null bs=1M &
> dd if=/dev/sdc of=/dev/null bs=1M &
> dd if=/dev/sdd of=/dev/null bs=1M &
> 
> it runs fine for a while, then:
> 
> [  810.545909] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x1380000 
> action 0x2 frozen
> [  810.545923] ata1.00: cmd c8/00:00:00:33:e6/00:00:00:00:00/e1 tag 0 
> cdb 0x0 data 131072 in
> [  810.545926]          res 40/00:28:00:00:00/00:00:00:00:00/40 Emask 
> 0x4 (timeout)
> [  815.913113] ata1: port is slow to respond, please be patient (Status 
> 0xff)
> [  820.590706] ata1: device not ready (errno=-16), forcing hardreset
> [  820.590716] ata1: hard resetting port
> [  826.137780] ata1: port is slow to respond, please be patient (Status 
> 0xff)
> [  830.635488] ata1: COMRESET failed (errno=-16)
> [  830.635497] ata1: hard resetting port
> [  836.182563] ata1: port is slow to respond, please be patient (Status 
> 0xff)
> [  840.680236] ata1: COMRESET failed (errno=-16)
> [  840.680245] ata1: hard resetting port
> [  846.227361] ata1: port is slow to respond, please be patient (Status 
> 0xff)
> [  875.672028] ata1: COMRESET failed (errno=-16)
> [  875.672037] ata1: limiting SATA link speed to 1.5 Gbps
> [  875.672041] ata1: hard resetting port
> [  880.679454] ata1: COMRESET failed (errno=-16)
> [  880.679463] ata1: reset failed, giving up
> [  880.679466] ata1.00: disabled
> [  880.679480] ata1: EH complete
> [  880.679545] sd 0:0:0:0: [sda] Result: hostbyte=0x04 driverbyte=0x00
> [  880.679550] end_request: I/O error, dev sda, sector 31863552
> [  880.679555] Buffer I/O error on device sda, logical block 3982944
> [  880.679561] Buffer I/O error on device sda, logical block 3982945
> [  880.679565] Buffer I/O error on device sda, logical block 3982946
> [  880.679569] Buffer I/O error on device sda, logical block 3982947
> [  880.679573] Buffer I/O error on device sda, logical block 3982948
> [  880.679578] Buffer I/O error on device sda, logical block 3982949
> [  880.679582] Buffer I/O error on device sda, logical block 3982950
> [  880.679586] Buffer I/O error on device sda, logical block 3982951
> [  880.679590] Buffer I/O error on device sda, logical block 3982952
> [  880.679594] Buffer I/O error on device sda, logical block 3982953
> [  880.680296] sd 0:0:0:0: [sda] Result: hostbyte=0x04 driverbyte=0x00
> [  880.680301] end_request: I/O error, dev sda, sector 31863808
> [  880.680877] sd 0:0:0:0: [sda] Result: hostbyte=0x04 driverbyte=0x00
> [  880.680882] end_request: I/O error, dev sda, sector 31863552
> [  880.681383] sd 0:0:0:0: [sda] Result: hostbyte=0x04 driverbyte=0x00
> [  880.681388] end_request: I/O error, dev sda, sector 31863552
> 
> The "funny" thing is that it runs fine using linux-2.6.21-rc2 with 
> Mikael Pettersson's "1.5Gbps only" patch.

Hmm, obviously a fatal problem, but not one I've seen before or
have an explanation for at this time. We do know however that the
SATA300 chips are prone to have "issues" especially in 3Gbps mode.

A couple of things you can do:
1. Provide a complete dmesg.
2. Force 1.5Gbps mode, using either jumpers or the driver patch (there's
   one for 2.6.22 in http://user.it.uu.se/~mikpe/linux/patches/2.6/).
3. Try to narrow down where the problem started, i.e., test 2.6.21 final
   and the 2.6.22-rc kernels.

/Mikael
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