由于wexrpc_csm_rpc中发生内存泄漏、ONTAP集群节点意外重新启动

适用场景

• ONTAP 9
• 重复运行volume explore -format analytics

问题描述

• ONTAP集群节点意外重新启动并显示 以下消息。

PANIC: Process mgwd unresponsive for 202 seconds (mgwd startup: "(2555)") in process nodewatchdog on release 9.11.1P8 (C) on Fri Oct 11 00:17:08 JST 2024

• VMSTAT-M of AutoSupport (ASUP) 表示wexrpc_CSM_RPC 的利用率一直在 增加：

=-=-=-=-=-= Sun Mar 05, 2023 00:09:04 +0900  VMSTAT-M 2 lines
         wexrpc_CSM_RPC 7823976  488999K   488999K   488999K     0K     0K  15647950  64,128
            D-wex bufs      3     1K     5K     0K     0K     1K  31295201
=-=-=-=-=-= Sun Mar 12, 2023 00:19:24 +0900  VMSTAT-M 2 lines
         wexrpc_CSM_RPC 15222161  951386K   951386K   951386K     0K     0K  30444320  64,128
            D-wex bufs      3     1K     5K     0K     0K     1K  60887263
=-=-=-=-=-= Sun Mar 19, 2023 00:09:26 +0900  VMSTAT-M 2 lines
         wexrpc_CSM_RPC 21793443 1362091K  1362091K  1362091K     0K     0K  43586884  64,128
            D-wex bufs      3     1K     5K     0K     0K     1K  87171781
=-=-=-=-=-= Sun Mar 26, 2023 00:29:12 +0900  VMSTAT-M 2 lines
         wexrpc_CSM_RPC 28400316 1775020K  1775020K  1775020K     0K     0K  56800630  64,128
            D-wex bufs      3     1K     5K     0K     0K     1K 113598643

• wexrpc_CSM_RPC 的消息还会每小时显示在LEAK-DATA.GZ of ASUP中：

- bsd memory - Sun Aug 13 10:50:00 JST 2023
  11743    54288128 0xffffffff83573ae7 [common_kmod.ko::ck_refill_zone+71] common_kmod malloc
   496     126976 0xffffffff806fdd0c [kernel::umtxq_alloc+28] umtx
   748     191488 0xffffffff805bdfb2 [kernel::fuse_ipc_init+370] fuse_msgbuf
   222     113664 0xffffffff8067e5ff [kernel::fget_unlocked+591] kdtrace
51638136   3304840704 0xffffffff836d1cf0 [common_kmod.ko::wex_1_common+48] wexrpc_CSM_RPC
   748     191488 0xffffffff805bdf6c [kernel::fuse_ipc_init+300] fuse_msgbuf