Stefan Richter napsal(a):
> Daniel Smolik wrote:
>
>> I have external enclosure with disk (Prolific chipset) I must upgrade
>> firmware to get it working with 2.6.x kernels. And with serialize_io=1
>> I get ~35Mb/s writing speed. With serialize_io=0 ~ 45Mb/s but disk
>> after copying 500MB freeze I must unplug it. Why disk freeze ? Chipset
>> doesn't support some feature ? Or hardware is buggy ?
>
>
> If problems remain with the newest firmware, they are likely caused by a
> sbp2 driver bug. (Perhaps I get it fixed during the summer...)
>
> By 'freeze' do you mean the copying process stops? Or does the entire
> system freeze? And do you mean by Mb/s MByte/s or Mbit/s?
Sorry I try better explanation. Copying process stops and amber led
on disk stop blinking. After while kernel transmit this:
54 marvin kernel: command: cdb[0]=0x2a: 2a 00 00 4d eb 77 00
00 f8 00
Jul 6 22:34:04 marvin kernel: sd 9:0:0:0:
Jul 6 22:34:04 marvin kernel: command: cdb[0]=0x0: 00 00 00
00 00 00
Jul 6 22:34:04 marvin kernel: sd 9:0:0:0:
Jul 6 22:34:04 marvin kernel: command: cdb[0]=0x2a: 2a 00 00
4d ec 6f 00 00 f8 00
Jul 6 22:34:14 marvin kernel: sd 9:0:0:0:
Jul 6 22:34:14 marvin kernel: command: cdb[0]=0x0: 00 00 00
00 00 00
Jul 6 22:34:24 marvin kernel: sd 9:0:0:0:
Jul 6 22:34:24 marvin kernel: command: cdb[0]=0x0: 00 00 00
00 00 00
Jul 6 22:34:24 marvin kernel: sd 9:0:0:0: scsi: Device offlined - not
ready after error recovery
Jul 6 22:34:24 marvin last message repeated 7 times
Jul 6 22:34:24 marvin kernel: sd 9:0:0:0: SCSI error: return code =
0x50000
Jul 6 22:34:24 marvin kernel: end_request: I/O error, dev sdg, sector
5105063
Jul 6 22:34:24 marvin kernel: lost page write due to I/O error on
sdg1
With Mb/s i mean MByte/s sorry.
But this night I upgrade from 2.6.16.16 to 2.6.17.1 and use full
workaround=0xF and copying work and disk don't freeze. I do more
testing and send result.
Regards
Dan Smolik
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