PS6100 with firmware version 7.0.5 + Oracle Linux 5.10 + multipathd question

I try to use the multipath regular linux (device-map-multipath) with my PS6100 and it doesn't quite work. It gives me "readsector0 Auditor reports path is down," "pdu (op 0 x 50000370 itt 0x1) rejected.» Code 0 x 4 reason"errors and my iSCSI connections are reset every few seconds. My OS is Oracle Linux 5.10 (fully updated) and my PS6100 is running with the latest firmware version 7.0.5.

The latest kit from Dell STRUCK for Linux, 1.3.0-2, works fine on this machine, but the reason why I'm putting multipathd is to compare the performance between the two solution. If we look at the other system we have that run the ordinary multipathd, paths of Dell could give us performance. We doubt it, but we want to do the tests and a comparison of its performance stats.

We have another server which has almost the same configuration (same OS connected to an another PS6100) and multipathd works well on this one. And one of the difference between this system and no work is that the PS6100 is running on firmware 5.2.5 instead of 7.0.5. I'd be willing to downgrade firmware (this unit is not yet in production, and I don't mind losing the data on it) but I'm not find anything on the internet that show how other that of the "call from Dell and it'll do it for you. If the only thing you need to do is a special command in the CLI then why there is no documentation on this subject?

So I wonder if anyone here runs a firmware equallogic 7.0.5 with the multipathd of linux and a RedHat 5 of operating system (Oracle Linux, Redhat, CentOS, etc.)?

Hello

It is documented in the release notes for the firmware 7.0.x.  There is a bug in Multipathd, which is exposed with 7.0.x. firmware.   Replace readsector0 TUR or ARM and restart multipathd.  Protocol errors will stop and Linux MPIO works perfectly.

Kind regards

Tags: Dell Products

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