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ディスク上にオブジェクトチャンクが存在する間、 EC-rebalance の実行後に OLST が報告されることがあります

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環境

  • StorageGRID 11.5
  • ONTAP
  • FabricPool

問題

ディスク上の物理的な場所にオブジェクトチャンクが存在する場合でも、 EC のリバランシング後にオブジェクトの損失が報告されることがあります。

損失オブジェクトの調査に関するドキュメントを次に示します。

# grep OLST audit.log
2022-02-17T11:00:40.208953 [AUDT:[CBID(UI64):0x8504E653A4550568][UUID(CSTR):"F4A19BD8-8912-4544-B423-26A33E10F7C0"][PATH(CSTR):"ec-bucket/6310eec2-8483-4498-b07a-3bedfce2fff7/0808d4d1_00000000025cfef7_6310eec2-8483-4498-b07a-3bedfce2fff7"][RSLT(FC32):NONE][AVER(UI32):10][ATIM(UI64):1645095640208953][ATYP(FC32):OLST][ANID(UI32):12597448][AMID(FC32):ILMX][ATID(UI64):15044298786699829299]]

# telnet localhost 1402
ade 12448208: / > /proc/OBRP/ObjectByUUID F4A19BD8-8912-4544-B423-26A33E10F7C0

{
   "TYPE": "CTNT",
   "CHND": "1FEC9E09-23CC-4E54-B9E3-099482A8C62A",
   "NAME": "6310eec2-8483-4498-b07a-3bedfce2fff7/0808d4d1_00000000025cfef7_6310eec2-8483-4498-b07a-3bedfce2fff7",
   "CBID": "0x80D54C8D8B62B9D0",
   "PHND": "3058F539-BCE5-11E9-9E53-650300B972EC",
   "PPTH": "ec-bucket",
   "META": {
       "BASE": {
           "ISIA": "10.64.203.173",
           "PHTP": "1",
           "PAWS": "2",
           "ACCT": "12969787153409237262",
           "BKAC": "12969787153409237262",
           "*ctp": "application/x-binary",
        },
       "AWS3": {
           "USDM": "{\"s3b-last-modified\":[\"20190808T092909Z\"],\"sha256\":[\"7f3ceaf54bcff0f63716900f6769b93597aae33e188e88792aa484a93d056dc9\"]}",
           "LOCC": "us-east-1"
        },
       "SEGM": {
           "SHSH": "MD5D 0x075B7CDE47E6140E4F4EC089FC2285A52D3400",
           "CSIZ": "29012864"
        },
       "BYCB": {
           "CTME": "1565603232952248",
           "SHSH": "MD5D 0x1F6225B9C340CDE85ADDBFC5CC818590",
           "CSIZ": "210",
           "BSIZ": "1168",
           "CVER": "196612",
           "CFLG": "256",
           "CTYP": "NONE",
           "CHSH": "SHA1 0x537C146DE8137717EA037AD9DF43779E2E6B63D8",
           "MTME": "1565603232944791",
           "ITME": "1565603232952248"
        },
       "CMSM": {
           "OWNR": "13461290",
           "LATM": "1565603232952248"
        }
    }
}

CLCO:"" (ロケーション)セクションがないことに注意してください。

ONTAP 側では、 ASUP が次の目的でトリガーされた可能性があります。
HA Group Notification (WAFL INCONSISTENT USER DATA BLOCK) ALERT

または、 ONTAP EMS ログで次のようなエラーが発生した場合:
Thu Feb 17 12:00:39 +0100 [nodename: wafl_cbin_cloud_obj_create_pr: wafl.raid.incons.set.err.obj:alert]: Data block at VBN <VBN number> tiered to capacity tier (objid <object id>, slot <slot id>, btuuid <>, seqno <sequence number>) and marked with error (120). Block previously had error (120).

Thu Feb 17 12:08:48 +0100 [nodename: wafl_exempt08: wafl.raid.incons.userdata:error]: WAFL inconsistent: inconsistent user data block at VBN <VBN number> (vvbn:<vvbn number> fbn:<fbn> level:0) in public inode (fileid:<file id> snapid:0 file_type:1 disk_flags:0x8002 error:120 raid_set:1) in volume <volumename>@vserver:<vserver id>.

ONTAP がオブジェクトストアから欠落しているブロックを認識すると、 RAID はこれらのブロックを擬似的な不良としてマークします(エラー: 120 )。

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