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Re: [dm-devel] multipath-tools-0.4.4 on 3par unknown path failure issue



I could use some suggestions on how to approach the issue at this point... We're in a bad position because this bug did not come out during a single instance test.

I have tried adjusting QLogic timeouts and any related parameters to see if a higher or lower timeout would affect the issue at all, and it's done nothing but make the problem worse.

I'm confident in what folks have said about 2.6.12 and later not exhibiting this issue. However, I have a redhat kernel running Oracle, and we need them to not drop our support. Currently redhat's support is ignoring me as well. Should I talk with the QLogic maintainer at all? 3par has no clue, unless they're hiding their "Linux guy" from me.

Does SuSE professional have this patched up? We might be able to switch to their distro if they will actually support multipathing on a database in their mainline kernel, vs not at all.

Thanks,
-Alan

We're running 2.6.9-11.ELsmp, off of redhat ES 4.1. I don't exactly have the entire list of redhat patches on hand, so I can't say for sure. Nor can I actually modify our kernel without losing support to the box. If this is fixed with a kernel upgrade, we can open a support ticket from redhat and scream/yell until they apply the patch.


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