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 Post subject: Queue length
PostPosted: Thu Jul 04, 2019 6:05 am 

Joined: Tue Dec 19, 2017 8:36 am
Posts: 11
What's means 'queue length' report ?
3par management console shows always it at the same value (2560) on FC ports although remote copy was disabled.
What is happening?


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 Post subject: Re: Queue length
PostPosted: Thu Jul 04, 2019 11:40 am 

Joined: Mon Sep 21, 2015 2:11 pm
Posts: 887
Location: Europe
zio_mangrovia wrote:
What's means 'queue length' report ?
3par management console shows always it at the same value (2560) on FC ports although remote copy was disabled.
What is happening?


Rcfc ports will always have a lot of pending read IOs (waiting for an incoming write). If you don' t use RCFC, just reconfigure the port to host and the queue is gone.

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 Post subject: Re: Queue length
PostPosted: Thu Jul 04, 2019 11:44 am 

Joined: Tue Dec 19, 2017 8:36 am
Posts: 11
MammaGutt wrote:
Rcfc ports will always have a lot of pending read IOs (waiting for an incoming write). If you don' t use RCFC, just reconfigure the port to host and the queue is gone.


RCFC are used for copy group so if I stop it why It should exist pending IOs ?


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 Post subject: Re: Queue length
PostPosted: Thu Jul 04, 2019 4:16 pm 

Joined: Mon Sep 21, 2015 2:11 pm
Posts: 887
Location: Europe
zio_mangrovia wrote:
MammaGutt wrote:
Rcfc ports will always have a lot of pending read IOs (waiting for an incoming write). If you don' t use RCFC, just reconfigure the port to host and the queue is gone.


RCFC are used for copy group so if I stop it why It should exist pending IOs ?


Nope, IOs are posted on either the RC targets or directly on the ports which are active(never bothered checking that). So regardless of how many groups and/or VVs are active the ports are still ready and has pending IOs.

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