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Cisco Bug: CSCvt57817 - High network load on DR link causing remote NFS timeout may affect the cluster status

Last Modified

Jul 18, 2020

Products (1)

  • Cisco HyperFlex HX-Series

Known Affected Releases

4.0(1a) 4.0(2a)

Description (partial)

The spring path filesystem service(storfs) will  restarts on controller VM, could impact the data availability on the cluster. 
There will be core file generated on /var/core.

Logs similar to following can be seen on the debug log:
2019-12-08-12:39:32.775+0000: storfs[2941:3184]: SUPPORT: PANIC: Segmentation fault @ 0xfffffffffffffff9 (source pid -7, uid -1 (info: 0x7fde5ca82cf0, ctxt: 0x7fde5ca82bc0)).
2019-12-08-12:39:32.777+0000: storfs[2941:3184]: SUPPORT: PANIC: [0x7fde5ca81090:0x558c7b919a8e] Util_Backtrace+0x4e(0x558c7b919a8e, 0x7fde5ca81090, 0x7fde5ca81460, 0x7fde5ca81090, 0x7fde5ca81150, 0x3000000010)
2019-12-08-12:39:32.777+0000: storfs[2941:3184]: SUPPORT: PANIC: [0x7fde5ca818a0:0x558c7b8b2272] LogPanicInternal+0x122(0x558c7bb436f8, 0x7fde5ca818b8, 0xfa1, 0x3000000028, 0x7fde5ca82a60, 0x7fde5ca82980)
2019-12-08-12:39:32.777+0000: storfs[2941:3184]: SUPPORT: PANIC: [0x7fde5ca82a60:0x558c7b8bec1e] Module_HeapIdToModId+0xfe(0x2f6638363400383d, 0xfffffffffffffff9, 0x61746e656d676553, 0x756166206e6f6974, 0x667830204020746c, 0x6666666666666666)
2019-12-08-12:39:32.778+0000: storfs[2941:3184]: SUPPORT: PANIC: [0x7fde5ca82bc0:0x7fe3f93ba390] __restore_rt+0(0x7, 0x0, 0x0, 0x2, 0x0, 0x0)
2019-12-08-12:39:32.778+0000: storfs[2941:3184]: SUPPORT: PANIC: [0x7fde5ca838c8:0x558c7b8bc559] Heap_Free+0x9(0x558c7b38e869, 0xfb, 0x7fde5ca83a00, 0x7fe3611a3120, 0x558c7b42d7f2, 0x7fe3611a335f)
2019-12-08-12:39:32.779+0000: storfs[2941:3184]: SUPPORT: PANIC: [0x7fde5ca838d0:0x558c7b38e869] ClusterPropertiesFree+0x19(0xfb, 0x7fde5ca83a00, 0x7fe3611a3120, 0x558c7b42d7f2, 0x7fe3611a335f, 0x3c61198bf0)
2019-12-08-12:39:32.779+0000: storfs[2941:3184]: SUPPORT: PANIC: [0x7fde5ca838f0:0x558c7b42d7f2] NRNFS_ConnectSync+0x242(0x7fe3611a335f, 0x3c61198bf0, 0x100000001, 0x7fe3611a3490, 0x558c7bb00b68e00e, 0x500fb0000)

The NFS clusterproperty query should fail after the NFS mount. This happen only if there is severe network load on the DR-link that is causing failures and a new connect is initiated and there was a timetout after the mount failed.
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