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extratype's avatar
extratype
Copper Contributor
Jan 22, 2022

ReFS filesystem not responding periodically

(Also posted on Q&A)

  • Storage spaces, Simple (no parity), Thin provisioning
  • Virtual disk larger than 100 TB, 10's of TBs used
  • ReFS 3.7

The filesystem is not responding for about 1 minute, for every ~25 minutes according to the Microsoft-Windows-ReFS/Operational event log (Event ID 147). A thread in the System process has ~100% core usage so I took a stack trace:

 

 

ntoskrnl.exe!KiDeliverApc+0x1b6
ntoskrnl.exe!KiApcInterrupt+0x328
ReFS.SYS!CmsRotatingSkipList<_RANGE,SmsAllocationRegionEx,OrderByStartOfRange,RegionLockPolicies>::InlineRebalance+0x98
ReFS.SYS!CmsRotatingSkipList<_RANGE,SmsAllocationRegionEx,OrderByStartOfRange,RegionLockPolicies>::Add+0x1d0
ReFS.SYS!CmsAllocator::SplitRangeOnlyRegion+0x386
ReFS.SYS!CmsAllocator::PinBitmapRegion+0x3176c
ReFS.SYS!CmsAllocator::TryProtectRangeIfDurablyFree+0x9b
ReFS.SYS!CmsThinProvisioning::UnmapWorkItemMethod+0x2e4
ReFS.SYS!<lambda_9a1cd484752ca8e9f6e914453bf80744>::<lambda_invoker_cdecl>+0x15
ReFS.SYS!MspWorkerRoutine+0x46
ntoskrnl.exe!ExpWorkerThread+0x14f
ntoskrnl.exe!PspSystemThreadStartup+0x55
ntoskrnl.exe!KiStartSystemThread+0x34

 

 

 

storage

6 Replies

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  • Harm_Veenstra's avatar
    Harm_Veenstra
    MVP
    Jan 26, 2022
    If the cpu's are at 100% (Don't know how many you have in the system), is there also a lot of network traffic on the system? Is there a task which dumps a lot of data on the system every half our for example? Had issues like this in the past with another (Non Storage Space) while dumping a backup database which was done with such speed that the disk system just couldn't handle it.
      • extratype's avatar
        extratype
        Copper Contributor
        Feb 01, 2022
        This issue is about the ReFS filesystem itself so I think only Microsoft employees can address it.

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