Greg Freemyer wrote:
On Thu, Jan 29, 2009 at 6:31 AM, Tejun Heo <tj@xxxxxxxxxx> wrote:
Hello,
This patchset is kicked off by kernel bz#9913 which reports hot
plugging and general detection problems with WD My Book drives. WD
was kind enough to provide me with these drives and I played quite a
bit with a few controllers and weird cabling configurations including
long cables and several genders.
It was surprisingly easy to trigger link layer problems. eSATA ports
often go through extra cable and gender. eSATA cables tend to be
longer than internal ones and as the cables are much stiffer touching
or moving the cable can easily cause enough wiggle at the connectors
to cause temporary transmission problems and being outside, it's much
more likely to be moved.
So, with abundant link quality problems, the following problems have
been identified.
Tejun,
This looks like an important patchset for those of us that use eSata.
Any chance these can get into the opensuse 11.1 kernels? Or lacking
that, the os factory kernels?
..
Based on experience here, I'd say the problem isn't terribly widespread
beyond the specific vendor Tejun identified. I have several eSATA setups
at hand here, and never see flaky link behaviour on them.
Cheers
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