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NetApp Response to Russia-Ukraine Cyber Threat
In response to the recent rise in cyber threat due to the Russian-Ukraine crisis, NetApp is actively monitoring the global security intelligence and updating our cybersecurity measures. We follow U.S. Federal Government guidance and remain on high alert. Customers are encouraged to monitor the Cybersecurity and Infrastructure Security (CISA) website for new information as it develops and remain on high alert.

仅使用板载 SAS 时的顺序读取工作负载延迟较高 端口

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14
Visibility:
Public
Votes:
0
Category:
ontap-9
Specialty:
perf
Last Updated:

适用场景

  • AFF 80 x 0
  • ONTAP 9
  • IOM 6
  • SAS 适配器 PMC-Sierra PM8001 和 PM8072

问题描述

  • 在顺序读取工作负载高峰期间观察到 SSD 的高延迟。
  • EMS 可能会报告如下错误:

[?] Thu Aug 13 20:55:55 EDT [AFF80x0: pmcsas_timeout_1: sas.device.quiesce:debug]: Adapter 0c encountered a command timeout on enclosure services device 0d.01.99. Quiescing the device[?] Thu Aug 13 20:55:58 EDT [AFF80x0: pmcsas_timeout_1: sas.device.timeout:error]: Adapter 0c encountered a device timeout on Enclosure services device 0d.01.99.
[?] Thu Aug 13 20:55:58 EDT [AFF80x0: pmcsas_timeout_1: sas.adapter.debug:info]: params: {'debug_string': 'Level 0 timeout on virtual device: Hard resetting PHY: 0d.01.99 (0xfffff820aaab0040,0x1c,0/0)', 'adapterName': '0c'}
[?] Thu Aug 13 20:55:58 EDT [AFF80x0: scsi_cmdblk_strthr_admin: scsi.cmd.abortedByHost:error]: Enclosure services device 0d.01.99: Command aborted by host adapter: HA status 0x4: cdb 0x1c.

 

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