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Nimble Firmware Upgrade and Citrix Hypervisor 8.2.1 Timeout settings


Troy Kutil1709154449

Question

Anyone out their with Nimble/Citrix Hypervisor experience. I really need to upgrade the firmware on the Nimble array, but seem to be only finding bits and pieces of the information i need to know with confidence that all of the correct timeouts are in place on the hypervisor side before upgrading the firmware. 

 

 

There is some information here.

https://discussions.citrix.com/topic/394653-xenserver-iscsiconf-and-multipathconf/#comment-2007016

 

This is what I received from Nimble support.

recommended settings in the /etc/iscsi/iscsid.conf file:

noop_out_interval = 5
noop_out_timeout = 10
replacement_timeout = 10
queue_depth = 64

 

AND

 

add the Nimble Storage device section to the mutipath.conf ( be sure to have user_friendly_names no  - this is disabled by default

defaults {
      user_friendly_names no
}
blacklist {
      devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
      devnode "^hd[a-z][[0-9]*]"
device {
      vendor "*"
      product "*"
      }
}
blacklist_exceptions {
      device {
      vendor "Nimble"
      product "Server"
      }
}
devices {
      device {
      vendor "Nimble"
      product "Server"
      path_grouping_policy group_by_prio
      failback immediate
      path_selector "service-time 0"
      path_checker "tur"
      hardware_handler "1 alua"
      prio "alua"
      dev_loss_tmo infinity
      fast_io_fail_tmo 5
      rr_min_io_rq    1
      rr_weight         uniform
      }
}

 

 

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