DMAからテープがオフラインになるとNDMPの直接バックアップが失敗する

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Category:: ndmp<a>2009640221</a>

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環境

ONTAP 9
NDMP
Tape
Commvault（DMA）

問題

DMA側から頻繁にテープデバイスがオフラインになると、NDMPの直接バックアップが失敗します。
テープデバイスが healthy/normal NetAppストレージに表示される。

NDMPログ：

[kern_ndmpd:info:5401] [32527] DEBUG: SCSI: OPEN: nrst0a NOT READY (error 1041: NDMPD device is busy or in a bad state) [kern_ndmpd:info:5401] [32527] DEBUG: error=2 (NDMP4_DEVICE_BUSY_ERR) [kern_ndmpd:info:5401] [32527] DEBUG: SCSI: OPEN: nrst0a NOT READY (error 1041: NDMPD device is busy or in a bad state) [kern_ndmpd:info:5401] [32527] DEBUG: error=2 (NDMP4_DEVICE_BUSY_ERR) [kern_ndmpd:info:5401] [32527] DEBUG: SCSI: OPEN: nrst0a NOT READY (error 1041: NDMPD device is busy or in a bad state) [kern_ndmpd:info:5401] [32527] DEBUG: error=2 (NDMP4_DEVICE_BUSY_ERR)

DMAログ：

004 1c10 07/19 11:19:58 --- Start to get the info for NDMP SCSI device [SN:C3EC4F9000] on client [node]... 9004 1c10 07/19 11:20:01 ### Tape Open Device [/Node/nrst1a] Failed, error=NDMP_DEVICE_BUSY. Retry count [1]. Will retry for [237] more seconds. Sleeping for 10 sec and retrying ... 9004 1c10 07/19 11:20:14 ### Tape Open Device [/Node/nrst1a] Failed, error=NDMP_DEVICE_BUSY. Retry count [2]. Will retry for [224] more seconds. Sleeping for 10 sec and retrying ...