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тАО09-22-2011 02:33 PM
тАО09-22-2011 02:33 PM
MSA1500CS FC-AL losing 2 redundant paths after ignite restore
We have an Active/Active MSA1500CS (tech support dump attached) that was originally configured with 4 paths for each LUN locally attached to a RP7440 using 2x A6826A FC cards - single connections. We had a boot failure on the 11th and restored the OS from an Ignite tape. Afterwards we only see 2 physical paths per LUN from the MSA including the boot disk (unit 0).
I have been beating my head on this for 2 weeks digging through all the information I can find. HP support doesn't seem to be able to help on this either. They suggested I enable independant cache but I don't have a way of doing so. We don't have any Windoze servers with HBA, only my HP-UX 11.23. I also can't seem to find an ACU-CLI for 11.23 PA either.
PVLINKS seems to be OK since it can pick up 2 paths and I have set the vgextend successfully for that path. We run a process on the DB this server hosts and I need the paths hard coded for the 4 luns to maximize the I/O.
Any help would be great!
PS I know a cache battery is bad. I have one for the next maintenance window.
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тАО09-22-2011 10:39 PM
тАО09-22-2011 10:39 PM
Re: MSA1500CS FC-AL losing 2 redundant paths after ignite restore
Does that mean that from each of these dual-port cards you only have one connection to the MSA1500? So that these offline ports are normal:
Controller 2 Port 1 Status = Offline
Controller 1 Port 1 Status = Offline
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тАО09-23-2011 06:14 AM
тАО09-23-2011 06:14 AM
Re: MSA1500CS FC-AL losing 2 redundant paths after ignite restore
That is correct. We only have one connection from each dual port HBA into the MSA. So those offline / online port statii are for the dual port cards on the 7440?
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тАО09-23-2011 06:36 AM - edited тАО09-23-2011 06:50 AM
тАО09-23-2011 06:36 AM - edited тАО09-23-2011 06:50 AM
Re: MSA1500CS FC-AL losing 2 redundant paths after ignite restore
Here is a ioscan -fn detail of how the disk paths used to look.
Edit: that was taken from another 7440 but the only difference is /dev/fcd0 is at 0/0/14 and not 1/0/6
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тАО09-23-2011 09:52 AM
тАО09-23-2011 09:52 AM
Re: MSA1500CS FC-AL losing 2 redundant paths after ignite restore
>> So those offline / online port statii are for the dual port cards on the 7440?
I would say that those are the statuses for the unused fc host ports fc in the MSA1500, but I suppose it's the same thing.
Why would it have four paths? I only see two paths to the MSA.
Maybe that's an HP-UX/PVLINKS thing that I don't understand..
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тАО09-26-2011 12:09 PM
тАО09-26-2011 12:09 PM
Re: MSA1500CS FC-AL losing 2 redundant paths after ignite restore
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тАО10-18-2011 09:03 PM
тАО10-18-2011 09:03 PM
Re: MSA1500CS FC-AL losing 2 redundant paths after ignite restore
If you are direct attach from HBA to MSA1500, the maximum paths is two. 1 per HBA port. Impossible to have 4 paths.