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CONTAP-648625: Flexgroup resize fails when proactive sizing active

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Issue

  • Attempt to resize a Flexgroup fails with error:
    ::> volume size -vserver MySVM -volume MyVolume -new-size 176t
    [Job 929660] Job failed: The volume operation was successful but the size of the volume has not finished updating. Wait a few minutes, and then check that the size of the volume is "176.0TB" using the "volume show -vserver MySVM -volume MyVolume -fields size" command. For further assistance, contact technical support.

  • At the time of the resize error, multiple EMS events are logged from "event log show":
    Fri Feb 13 13:37:00 +0000 [MyCluster-01: mgwd: fg.admin.wait.long:notice]: FlexGroup volume "MyVolume" (MSID "2151939689") in Vserver "MySVM" took 300 seconds to update the "size" property during the "volume modify" operation.
    Fri Feb 13 13:37:00 +0000 [MyCluster-01: mgwd: mgmtgwd.jobmgr.jobcomplete.failure:info]: Job "Vol Modify" [id 929660] (Modify MyVolume) completed unsuccessfully: The volume operation was successful but the size of the volume has not finished updating. Wait a few minutes, and then check that the size of the volume is "176.0TB" using the "volume show -vserver MySVM -volume MyVolume -fields size" command. For further assistance, contact technical support. (13107268).

  • At the same time, proactive sizing is active within the 300 seconds after executing the Flexgroup resize job and before the error getting returned. Visible in EMS "event log show" (multiple/"many" of these messages for different Flexgroup constituents):
    Fri Feb 13 13:36:58 +0000 [MyCluster-01: wafl_exempt19: fg_member_elastic_sizing_1:notice]: params: {'constituent_dsid': '92947', 'object_name': 'MyVolume', 'current_size': '5805946291', 'new_size': '5779731891', 'constituent_name': 'MyVolume__0005', 'operation': 'SHRUNK', 'partner_name': 'MyVolume__0002', 'partner_dsid': '92944', 'size': '23780887179264', 'used': '7472098627584', 'percent_full': '31', 'flexgroup_size': '187490713653248', 'flexgroup_used': '84509141458944', 'flexgroup_percent_full': '45', 'event_time': '14022444812'}
    Fri Feb 13 13:36:59 +0000 [MyCluster-01: wafl_exempt06: fg_member_elastic_sizing_1:notice]: params: {'constituent_dsid': '92944', 'object_name': 'MyVolume', 'current_size': '4545646239', 'new_size': '4571860639', 'constituent_name': 'MyVolume__0002', 'operation': 'GREW', 'partner_name': 'MyVolume__0005', 'partner_dsid': '92947', 'size': '18618698166272', 'used': '8746266288128', 'percent_full': '46', 'flexgroup_size': '187490713653248', 'flexgroup_used': '84509141458944', 'flexgroup_percent_full': '45', 'event_time': '14022444813'}


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