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アグリゲートの再配置時のギブバックでのNFSの停止

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Category:
ontap-9
Specialty:
nas<a>ANDU</a><a>2009124450</a><a>ndu</a><a>無停止アップグレード</a>
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環境

  • ONTAP 9.7
  • SAP HANA

問題

ギブバックフェーズでのアグリゲートの再配置時に発生することがあります
  • NFSv4のロックは失われます
  • SAP HANAなどのクライアントアプリケーションがクラッシュする
次のエントリは、sktraceログに含まれます
BLADE_Chk: n0x930b60: src/Protocols/Nfs/Nfs4/Lock/Nfs4LockState.cpp:6560 rt=4064 NBLADE_Chk: n0x93086e: src/Protocols/Nfs/Nfs4/Lock/Nfs4LockState.cpp:6258 rt=4064 NBLADE_Chk: n0xfe840d: src/Protocols/Nfs/Nfs4/Ops/Nfs4OpsIo.cpp:736 rt=4064 NBLADE_Chk: n0xfec2d6: src/Protocols/Nfs/Nfs4/Ops/Nfs4OpsIo.cpp:1643 rt=4064
lmgr sktraceがイネーブルになっている場合は、sktraceログにも次のように表示されます
[2:0] LMGR_20: cb_reclaim.c:290:cb_reclaim lgi 2 classify cerr=12 nerr=0

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