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Linux ホストで LUN パスが失われ、 blk_cloned_rm_check_limits エラーが発生します

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環境

  • AFF-A800
  • ONTAP 9.6
  • ONTAP 9.7
  • ファイバチャネル( FC ) LUN
  • Red Hat Enterprise Linux ( RHEL ) 7.6
  • Red Hat Enterprise Linux ( RHEL ) 7.7
  • Linux Unified Host Utilities 7.1

問題

RHEL 7.6 ホストで LUN へのパスが失われて、次のマルチパスエラーが記録される:
 
kernel:blk_cloned_rq_check_limits: over max size limit
 
ストレージVPDがアドバタイズする転送長が 、ホストが使用している転送長と異なります。
 #sg_vpd -p /dev/sda
 
ONTAP
scsit_lu_1: scsiblade.invalid.xfer.len:notice]: Host type sent command opcode 0x2a with a transfer length of bytes, which exceeds the maximum of 1MB on LUN

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