1497 文字
7 分

Raid1のディスクを抜いて挿してみる

2019-12-21
2020-01-22
Linux
RAID
/
MegaRAID
/
Linux

結論#

  • 抜いたドライブは**Unconfigured Bad (UBad)**になる。同じディスクを同じスロットに挿し直しても自動的には元に戻らない
  • set good → foreign import の手順でリビルドが開始される

検証環境#

  • RAIDコントローラ: RAID Ctrl SAS 6G 5/6 512MB (D2616)
  • 管理ツール: storcli64
  • 構成: DG0 = RAID5 (SAS × 4)、DG1 = RAID1 (SATA × 2)
  • 検証対象: DG1のRAID1ミラーの片方 (slot 5)

手順#

1. ディスクを抜いて挿した後の状態確認#

抜いて挿したドライブは、Unconfigured Badになっている。同じディスクが挿されたとしても、もとには戻らない。

Terminal window
root@dell ~# /opt/MegaRAID/storcli/storcli64 /c0 show
Generating detailed summary of the adapter, it may take a while to complete.


Controller = 0
Status = Success
Description = None


Product Name = RAID Ctrl SAS 6G 5/6 512MB (D2616)
Serial Number =
SAS Address =  50030057013af4c0
PCI Address = 00:08:00:00
System Time = 12/21/2019 23:37:35
Mfg. Date = 00/00/00
Controller Time = 12/21/2019 14:37:35
FW Package Build = 12.12.0-0174
FW Version = 2.130.353-2727
BIOS Version = 3.29.00_4.14.05.00_0x06000500
Driver Name = megaraid_sas
Driver Version = 07.707.50.00-rc1
Vendor Id = 0x1000
Device Id = 0x79
SubVendor Id = 0x1734
SubDevice Id = 0x1176
Host Interface = PCIE
Device Interface = SAS-6G
Bus Number = 8
Device Number = 0
Function Number = 0
Drive Groups = 2


TOPOLOGY :
========


--------------------------------------------------------------------------
DG Arr Row EID:Slot DID Type  State BT       Size PDC  PI SED DS3  FSpace
--------------------------------------------------------------------------
 0 -   -   -        -   RAID5 Optl  N  836.625 GB dsbl N  N   none N
 0 0   -   -        -   RAID5 Optl  N  836.625 GB dsbl N  N   none N
 0 0   0   252:0    6   DRIVE Onln  N  278.875 GB dsbl N  N   none -
 0 0   1   252:1    5   DRIVE Onln  N  278.875 GB dsbl N  N   none -
 0 0   2   252:2    7   DRIVE Onln  N  278.875 GB dsbl N  N   none -
 0 0   3   252:3    4   DRIVE Onln  N  278.875 GB dsbl N  N   none -
 1 -   -   -        -   RAID1 Dgrd  N    1.818 TB dflt N  N   none N
 1 0   -   -        -   RAID1 Dgrd  N    1.818 TB dflt N  N   none N
 1 0   0   252:4    8   DRIVE Onln  N    1.818 TB dflt N  N   none -
 1 0   1   -        -   DRIVE Msng  -    1.818 TB -    -  -   -    -
--------------------------------------------------------------------------


DG=Disk Group Index|Arr=Array Index|Row=Row Index|EID=Enclosure Device ID
DID=Device ID|Type=Drive Type|Onln=Online|Rbld=Rebuild|Dgrd=Degraded
Pdgd=Partially degraded|Offln=Offline|BT=Background Task Active
PDC=PD Cache|PI=Protection Info|SED=Self Encrypting Drive|Frgn=Foreign
DS3=Dimmer Switch 3|dflt=Default|Msng=Missing|FSpace=Free Space Present


Missing Drives Count = 1


Missing Drives :
==============


-------------------
Array Row     Size
-------------------
    1   1 1.818 TB
-------------------


Virtual Drives = 2


VD LIST :
=======


-----------------------------------------------------------
DG/VD TYPE  State Access Consist Cache sCC       Size Name
-----------------------------------------------------------
0/0   RAID5 Optl  RW     Yes     NRWTD -   836.625 GB
1/1   RAID1 Dgrd  RW     No      RWTD  -     1.818 TB
-----------------------------------------------------------


Cac=CacheCade|Rec=Recovery|OfLn=OffLine|Pdgd=Partially Degraded|dgrd=Degraded
Optl=Optimal|RO=Read Only|RW=Read Write|HD=Hidden|B=Blocked|Consist=Consistent|
R=Read Ahead Always|NR=No Read Ahead|WB=WriteBack|
AWB=Always WriteBack|WT=WriteThrough|C=Cached IO|D=Direct IO|sCC=Scheduled
Check Consistency


Physical Drives = 6


PD LIST :
=======


-----------------------------------------------------------------------------
EID:Slt DID State DG       Size Intf Med SED PI SeSz Model                Sp
-----------------------------------------------------------------------------
252:0     6 Onln   0 278.875 GB SAS  HDD N   N  512B HUS156030VLS600      U
252:1     5 Onln   0 278.875 GB SAS  HDD N   N  512B HUS156030VLS600      U
252:2     7 Onln   0 278.875 GB SAS  HDD N   N  512B HUS156030VLS600      U
252:3     4 Onln   0 278.875 GB SAS  HDD N   N  512B HUS156030VLS600      U
252:4     8 Onln   1   1.818 TB SATA HDD N   N  512B WDC WD20EZRX-00DC0B0 U
252:5     9 UBad   F   1.818 TB SATA HDD N   N  512B WDC WD20EARX-00PASB0 U
-----------------------------------------------------------------------------


EID-Enclosure Device ID|Slt-Slot No.|DID-Device ID|DG-DriveGroup
DHS-Dedicated Hot Spare|UGood-Unconfigured Good|GHS-Global Hotspare
UBad-Unconfigured Bad|Onln-Online|Offln-Offline|Intf-Interface
Med-Media Type|SED-Self Encryptive Drive|PI-Protection Info
SeSz-Sector Size|Sp-Spun|U-Up|D-Down|T-Transition|F-Foreign
UGUnsp-Unsupported|UGShld-UnConfigured shielded|HSPShld-Hotspare shielded
CFShld-Configured shielded|Cpybck-CopyBack|CBShld-Copyback Shielded

2. UBadをUGoodに変更する#

ドライブの状態をUnconfigured Goodに変更する。

Terminal window
root@dell ~# /opt/MegaRAID/storcli/storcli64 /c0/e252/s5 set good
Controller = 0
Status = Success
Description = Set Drive Good Succeeded.

3. UGoodになったことを確認する#

Terminal window
root@dell ~# /opt/MegaRAID/storcli/storcli64 /c0 show
Generating detailed summary of the adapter, it may take a while to complete.


Controller = 0
Status = Success
Description = None


Product Name = RAID Ctrl SAS 6G 5/6 512MB (D2616)
Serial Number =
SAS Address =  50030057013af4c0
PCI Address = 00:08:00:00
System Time = 12/21/2019 23:40:50
Mfg. Date = 00/00/00
Controller Time = 12/21/2019 14:40:50
FW Package Build = 12.12.0-0174
FW Version = 2.130.353-2727
BIOS Version = 3.29.00_4.14.05.00_0x06000500
Driver Name = megaraid_sas
Driver Version = 07.707.50.00-rc1
Vendor Id = 0x1000
Device Id = 0x79
SubVendor Id = 0x1734
SubDevice Id = 0x1176
Host Interface = PCIE
Device Interface = SAS-6G
Bus Number = 8
Device Number = 0
Function Number = 0


FOREIGN CONFIGURATION :
=====================


---------------------------------------
DG EID:Slot Type  State     Size NoVDs
---------------------------------------
 0 -        RAID1 Frgn  1.818 TB     1
---------------------------------------


NoVDs - Number of VDs in disk group|DG - Diskgroup
Total foreign drive groups = 1
Drive Groups = 2


TOPOLOGY :
========


--------------------------------------------------------------------------
DG Arr Row EID:Slot DID Type  State BT       Size PDC  PI SED DS3  FSpace
--------------------------------------------------------------------------
 0 -   -   -        -   RAID5 Optl  N  836.625 GB dsbl N  N   none N
 0 0   -   -        -   RAID5 Optl  N  836.625 GB dsbl N  N   none N
 0 0   0   252:0    6   DRIVE Onln  N  278.875 GB dsbl N  N   none -
 0 0   1   252:1    5   DRIVE Onln  N  278.875 GB dsbl N  N   none -
 0 0   2   252:2    7   DRIVE Onln  N  278.875 GB dsbl N  N   none -
 0 0   3   252:3    4   DRIVE Onln  N  278.875 GB dsbl N  N   none -
 1 -   -   -        -   RAID1 Dgrd  N    1.818 TB dflt N  N   none N
 1 0   -   -        -   RAID1 Dgrd  N    1.818 TB dflt N  N   none N
 1 0   0   252:4    8   DRIVE Onln  N    1.818 TB dflt N  N   none -
 1 0   1   -        -   DRIVE Msng  -    1.818 TB -    -  -   -    -
--------------------------------------------------------------------------


DG=Disk Group Index|Arr=Array Index|Row=Row Index|EID=Enclosure Device ID
DID=Device ID|Type=Drive Type|Onln=Online|Rbld=Rebuild|Dgrd=Degraded
Pdgd=Partially degraded|Offln=Offline|BT=Background Task Active
PDC=PD Cache|PI=Protection Info|SED=Self Encrypting Drive|Frgn=Foreign
DS3=Dimmer Switch 3|dflt=Default|Msng=Missing|FSpace=Free Space Present


Missing Drives Count = 1


Missing Drives :
==============


-------------------
Array Row     Size
-------------------
    1   1 1.818 TB
-------------------


Virtual Drives = 2


VD LIST :
=======


-----------------------------------------------------------
DG/VD TYPE  State Access Consist Cache sCC       Size Name
-----------------------------------------------------------
0/0   RAID5 Optl  RW     Yes     NRWTD -   836.625 GB
1/1   RAID1 Dgrd  RW     No      RWTD  -     1.818 TB
-----------------------------------------------------------


Cac=CacheCade|Rec=Recovery|OfLn=OffLine|Pdgd=Partially Degraded|dgrd=Degraded
Optl=Optimal|RO=Read Only|RW=Read Write|HD=Hidden|B=Blocked|Consist=Consistent|
R=Read Ahead Always|NR=No Read Ahead|WB=WriteBack|
AWB=Always WriteBack|WT=WriteThrough|C=Cached IO|D=Direct IO|sCC=Scheduled
Check Consistency


Physical Drives = 6


PD LIST :
=======


-----------------------------------------------------------------------------
EID:Slt DID State DG       Size Intf Med SED PI SeSz Model                Sp
-----------------------------------------------------------------------------
252:0     6 Onln   0 278.875 GB SAS  HDD N   N  512B HUS156030VLS600      U
252:1     5 Onln   0 278.875 GB SAS  HDD N   N  512B HUS156030VLS600      U
252:2     7 Onln   0 278.875 GB SAS  HDD N   N  512B HUS156030VLS600      U
252:3     4 Onln   0 278.875 GB SAS  HDD N   N  512B HUS156030VLS600      U
252:4     8 Onln   1   1.818 TB SATA HDD N   N  512B WDC WD20EZRX-00DC0B0 U
252:5     9 UGood  F   1.818 TB SATA HDD N   N  512B WDC WD20EARX-00PASB0 U
-----------------------------------------------------------------------------


EID-Enclosure Device ID|Slt-Slot No.|DID-Device ID|DG-DriveGroup
DHS-Dedicated Hot Spare|UGood-Unconfigured Good|GHS-Global Hotspare
UBad-Unconfigured Bad|Onln-Online|Offln-Offline|Intf-Interface
Med-Media Type|SED-Self Encryptive Drive|PI-Protection Info
SeSz-Sector Size|Sp-Spun|U-Up|D-Down|T-Transition|F-Foreign
UGUnsp-Unsupported|UGShld-UnConfigured shielded|HSPShld-Hotspare shielded
CFShld-Configured shielded|Cpybck-CopyBack|CBShld-Copyback Shielded

4. Foreign Configurationをインポートする#

同じスロットに同じHDDを挿し直しただけなので、同じRAIDのボリュームに再度構成し直すだけ。RAID自体には変更を加えずに元に戻すコマンドを送る。

Terminal window
root@dell ~# /opt/MegaRAID/storcli/storcli64 /c0 /fall import
Controller = 0
Status = Success
Description = Successfully imported foreign configuration

5. リビルド状態を確認する#

Rebuildになっているかステータスを確認。予想完了時間は表示されなかった。

Terminal window
root@dell ~# /opt/MegaRAID/storcli/storcli64 /c0 /e252 /s5 show rebuild
Controller = 0
Status = Success
Description = Show Drive Rebuild Status Succeeded.


------------------------------------------------------
Drive-ID    Progress% Status      Estimated Time Left
------------------------------------------------------
/c0/e252/s5         4 In progress -
------------------------------------------------------

まとめ#

MegaRAID環境でRAID1のディスクをホットリムーブ→ホットアドした場合の復旧手順:

  1. storcli64 /c0/e252/s5 set good — UBad → UGoodに変更
  2. storcli64 /c0 /fall import — Foreign Configurationをインポート
  3. storcli64 /c0/e252/s5 show rebuild — リビルド進捗を確認

同じディスクを同じスロットに戻しても自動復旧はしないので、手動での操作が必要。

Raid1のディスクを抜いて挿してみる
https://blog.teraren.com/posts/raid1-hot-remove-add/
作者
Yuki Matsukura
公開日
2019-12-21
ライセンス
CC BY-NC-SA 4.0
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