VSAN OSA nodes PSOD during the upgrade from 7.x and 8.x to vSAN 8.0 U2 GA.

Products

• VMware vSAN

Issue/Introduction

Symptoms:

vSAN OSA Stretched clusters with UNMAP enabled may experience host PSODs when upgrading from 7.x and 8.x versions to vSAN 8.0 U2 GA.

Panic Details: Crash at 2023-xxxxxxxZ on CPU 86 running world 2100147 - VSAN_0x450140053b80_LSOMLLOG. VMK Uptime:2:08:42:18.480
Panic Message: @BlueScreen: Failed at bora/modules/vmkernel/lsom/lsom_commit_flusher.c:2506 -- VMK_ASSERT(cfDisableAssert || LSNEntryLessThan(entry, cfParams->gcpEntry))
Backtrace:
  0x4539c271bb20:[0x420020d19b5a]PanicvPanicInt@vmkernel#nover+0x202 stack: 0x22baed74d8078, 0x420020d19b5a, 0x0, 0x420000000001, 0x420020d19b5a
  0x4539c271bbd0:[0x420020d1a47c]Panic_vPanic@vmkernel#nover+0x25 stack: 0x45014373c748, 0x420020d32561, 0x6000013100, 0x420000000010, 0x4539c271bc50
  0x4539c271bbf0:[0x420020d32560]vmk_PanicWithModuleID@vmkernel#nover+0x41 stack: 0x4539c271bc50, 0x4539c271bc10, 0x6000012500, 0x45014373cb50, 0x42002296ae88
  0x4539c271bc50:[0x4200228927b3][email protected]#0.0.0.1+0x1f04 stack: 0x45da00000000, 0x0, 0x227a4f3a655bc86f, 0x420022b6957b, 0x227a4f3a655bc86f
  0x4539c271bde0:[0x42002288dcc9][email protected]#0.0.0.1+0xb2 stack: 0x450142c4eea8, 0x4539c271bf50, 0x22baed74dc867, 0x0, 0x450142c4eea8
  0x4539c271be20:[0x420022878f5c][email protected]#0.0.0.1+0x31 stack: 0x14296509, 0x42002254c74b, 0x142964fa, 0x450140053b80, 0x22baed74c7b84
  0x4539c271bee0:[0x4200224d5e97][email protected]#0.0.0.1+0x230 stack: 0x22baed74dc867, 0x450140053d10, 0x22baed74d1908, 0x800000000, 0x0
  0x4539c271bfa0:[0x420020d3a234]vmkWorldFunc@vmkernel#nover+0x31 stack: 0x420020d3a230, 0x0, 0x4539c271f000, 0x45399f61f100, 0x4539c271f100
  0x4539c271bfe0:[0x42002102c015]CpuSched_StartWorld@vmkernel#nover+0xe2 stack: 0x0, 0x420020cdbe00, 0x0, 0x0, 0x0
  0x4539c271c000:[0x420020cdbdff]Debug_IsInitialized@vmkernel#nover+0xc stack: 0x0, 0x0, 0x0, 0x0, 0x0

#2  0x0000420009e5f7b4 in LSOMCFApplyGCP (component=0x4500427f6e08) at bora/modules/vmkernel/lsom/lsom_commit_flusher.c:2506
#3  LSOMCommitFlusherDispatch (sm=0x4500427f75d0) at bora/modules/vmkernel/lsom/lsom_commit_flusher.c:5534
#4  0x0000420009e5acca in LSOMCommitFlusherRun (sm=0x450042728140) at bora/modules/vmkernel/lsom/lsom_commit_flusher.c:1130
#5  0x0000420009e45f5d in LSOMReadSNSetSeal (task=<optimized out>) at bora/modules/vmkernel/lsom/lsom.c:1266
#6  LSOM_SrvDispatch (operation=0x450042727ab8, flags=<optimized out>) at bora/modules/vmkernel/lsom/lsom.c:3579

NOTICE:

 

The above PSOD error stack may not match exactly and may differ. 

Environment

VMware vSAN 7.x

VMware vSAN 8.x

vSAN OSA Stretched cluster.

UNMAP enabled.

Upgrade from 7.x and 8.x versions to vSAN 8.0 U2 GA.

Cause

The issue is due to the change in the behavior of UNMAP IO handing.

Resolution

This issue is fixed in ESXi 8.0.2 P03 Build 23305546.

If the above symptoms and issue matches and need further assistance, please contact Broadcom Support.