Re: [RFT][PATCH v6] sata_mv: convert to new EH
- From: dean gaudet <dean@xxxxxxxxxx>
- Date: Wed, 11 Jul 2007 01:41:46 -0700 (PDT)
On Wed, 11 Jul 2007, Jeff Garzik wrote:
This patch is diff'd against virgin 2.6.22 kernel, and does not require
any other patches (and indeed no other sata_mv patches should be applied
alongside this one).
Thanks to dean's feedback (and similar feedback from Dave), I think I
killed two key sata_mv bugs, either of which could cause the WARNING
spew being reported. In sum, sata_mv was not doing a good job of
managing the software-managed request and response queue pointers.
Testing feedback with 2.6.22 + this patch would be appreciated. It
works on my 6041 (Gen-II) and 5081 (Gen-I). Haven't yet tried a Gen-IIE
chip (6042/7042-compatible).
oh interesting... with this one i still get lots of errors during boot...
but i can conditionally hit 70MB/s+ i/o rates on one drive at a time.
see attached log for boot errors.
i went through a series like this:
1. dd if=/dev/sda of=/dev/null &
2. dd if=/dev/sdb of=/dev/null &
3. then i noticed errors in the log and i killed both those tasks
4. dd if=/dev/sdc of=/dev/null &
5. "iostat -kx /dev/sd? 5" observe 70MB/s read rate on sdc
5. kill dd from step 4
6. dd if=/dev/sdd of=/dev/null &
7. "iostat -kx /dev/sd? 5" observe 70MB/s read rate on sdd
8. kill dd from step 6
9. dd if=/dev/sdb of=/dev/null &
10. "iostat -kx /dev/sd? 5" observe 70MB/s read rate on sdb
11. kill dd from step 6
12. dd if=/dev/sdc of=/dev/null &
13. dd if=/dev/sdd of=/dev/null &
14. massive errors in the logs
it looks like doing reads on two of the drives on the 6081 causes mass
errors in the logs...
also if i use "iflag=direct" on the dd i see only ~12MB/s i/o, but that
could be entirely unrelated.
-dean
Attachment:
log.31.20070711_0126.bz2
Description: Binary data
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- From: Jeff Garzik
- [RFT][PATCH v6] sata_mv: convert to new EH
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