[Hyper-V] scsi: storvsc: Increase cmd_per_lun for higher speed devices

Bug #1745261 reported by Joshua R. Poulson on 2018-01-25
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux-azure (Ubuntu)
Undecided
Unassigned
Xenial
Undecided
Unassigned
linux-azure-edge (Ubuntu)
Undecided
Unassigned
Xenial
Undecided
Unassigned

Bug Description

Increase cmd_per_lun to allow more I/Os in progress per device,
particularly for NVMe's. The Hyper-V host side can handle the
higher count with no issues.

This patch should be applied to the linux-azure kernel.

Joshua R. Poulson (jrp) wrote :
Changed in linux-azure (Ubuntu):
status: New → Confirmed
tags: added: patch
Joshua R. Poulson (jrp) on 2018-01-25
summary: - [Hyper-V] [PATCH 1/1] scsi: storvsc: Increase cmd_per_lun for higher
- speed devices
+ [Hyper-V] scsi: storvsc: Increase cmd_per_lun for higher speed devices
tags: added: kernel-da-key kernel-hyper-v
Marcelo Cerri (mhcerri) wrote :

It was requested to enable CONFIG_SCSI_MQ_DEFAULT=y.

Joshua R. Poulson (jrp) wrote :

Yes, I didn't have a separate bug for that, but it is in the case that is the parent feature request of this LP and the other one.

Marcelo Cerri (mhcerri) wrote :

Josh. Does that Josh. Should that patch also be applied to the 4.14 azure-edge kernel?

Marcelo Cerri (mhcerri) on 2018-01-26
Changed in linux-azure (Ubuntu Xenial):
status: New → Fix Committed
Marcelo Cerri (mhcerri) on 2018-01-29
Changed in linux-azure-edge (Ubuntu Xenial):
status: New → Fix Committed
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package linux-azure - 4.13.0-1009.12

---------------
linux-azure (4.13.0-1009.12) xenial; urgency=low

  * linux-azure: 4.13.0-1009.12 -proposed tracker (LP: #1746726)

  * libata: apply MAX_SEC_1024 to all LITEON EP1 series devices (LP: #1743053)
    - libata: apply MAX_SEC_1024 to all LITEON EP1 series devices

linux-azure (4.13.0-1008.11) xenial; urgency=low

  * linux-azure: 4.13.0-1008.11 -proposed tracker (LP: #1745669)

  * [Hyper-V] x86/hyperv: Stop suppressing X86_FEATURE_PCID (LP: #1745247)
    - x86/hyperv: Stop suppressing X86_FEATURE_PCID

  * [Hyper-V] scsi: storvsc: Spread interrupts when picking a channel for I/O
    requests (LP: #1745260)
    - SAUCE: scsi: storvsc: Spread interrupts when picking a channel for I/O
      requests

  * [Hyper-V] scsi: storvsc: Increase cmd_per_lun for higher speed devices
    (LP: #1745261)
    - SAUCE: scsi: storvsc: Increase cmd_per_lun for higher speed devices
    - [Config] CONFIG_SCSI_MQ_DEFAULT=y

 -- Marcelo Henrique Cerri <email address hidden> Thu, 01 Feb 2018 11:13:09 -0200

Changed in linux-azure (Ubuntu Xenial):
status: Fix Committed → Fix Released
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