LVM이 NOT available 상태일 때

시나리오

- 증상 : fstab에 등록된 디바이스가 마운트되지 않음

- 점검1 : lvdisplay에서 확인되는 LV Path가 존재하지 않음

[root@ DBS01]# ls -l /dev/dataVG/oradata ls: cannot access /dev/dataVG/oradata: No such file or directory

- 점검2 : lvdisplay에서 LVM상태가 NOT available 임 (정상 : available)

 

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정상 LVM과 비정상 LVM 비교 확인

[비정상 LVM]

[root@DBS01]# lvdisplay -v /dev/dataVG/oradata     DEGRADED MODE. Incomplete RAID LVs will be processed.     Using logical volume(s) on command line   --- Logical volume ---   LV Path                /dev/dataVG/oradata   LV Name                oradata   VG Name                dataVG   LV UUID                Eje5UK-UDJU-SwP4-FOmG-O7dZ-NEy6-JJW63o   LV Write Access        read/write   LV Creation host, time DBS01, 2016-01-20 16:41:47 +0900   LV Status              NOT available   <--  비정상   LV Size                599.99 GiB   Current LE             153597   Segments               2   Allocation             inherit   Read ahead sectors     auto

[정상 LVM]

[root@ DBS01]# lvdisplay -v /dev/backupVG/orabackup     DEGRADED MODE. Incomplete RAID LVs will be processed.     Using logical volume(s) on command line   --- Logical volume ---   LV Path                /dev/backupVG/orabackup   LV Name                orabackup   VG Name                backupVG   LV UUID                RyO7Cd-V104-BhV5-koOg-mNcQ-YjXq-ReNu8y   LV Write Access        read/write   LV Creation host, time DBS01, 2016-01-20 16:42:06 +0900   LV Status              available   <--  정상   # open                 1   LV Size                700.00 GiB   Current LE             179200   Segments               1   Allocation             inherit   Read ahead sectors     auto   - currently set to     256   Block device           252:4

 

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해결방법

비정상 LVM에서 논리볼륨을 활성화해준다

lvchange -ay "LVM 논리볼륨 경로"  * 논리볼륨 경로는 lvdiaplay에서 LV path 값으로 확인 가능

[root@ DBS01]# lvchange -ay /dev/dataVG/oradata [root@ DBS01]# lvdisplay -v /dev/dataVG/oradata     DEGRADED MODE. Incomplete RAID LVs will be processed.     Using logical volume(s) on command line   --- Logical volume ---   LV Path                /dev/dataVG/oradata   LV Name                oradata   VG Name                dataVG   LV UUID                Eje5UK-UDJU-SwP4-FOmG-O7dZ-NEy6-JJW63o   LV Write Access        read/write   LV Creation host, time DBS01, 2016-01-20 16:41:47 +0900   LV Status              available   # open                 0   LV Size                599.99 GiB   Current LE             153597   Segments               2   Allocation             inherit   Read ahead sectors     auto   - currently set to     256   Block device           252:11

 

 

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최초 목적인 마운트 정상 확인

[root@ DBS01]# mount /DBDATA [root@ DBS01]# df -h Filesystem            Size  Used Avail Use% Mounted on /dev/mapper/dataVG-oradata                       591G  432G  132G  77% /DBDATA

 

 

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만약 반대로 논리볼륨을 비활성화 하고 싶다면

[root@ DBS01]# umount /MDMDBDATA [root@ DBS01]# lvchange -an /dev/dataVG/oradata [root@ DBS01]# lvdisplay -v /dev/dataVG/oradata     DEGRADED MODE. Incomplete RAID LVs will be processed.     Using logical volume(s) on command line   --- Logical volume ---   LV Path                /dev/dataVG/oradata   LV Name                oradata   VG Name                dataVG   LV UUID                Eje5UK-UDJU-SwP4-FOmG-O7dZ-NEy6-JJW63o   LV Write Access        read/write   LV Creation host, time DBS01 , 2016-01-20 16:41:47 +0900   LV Status              NOT available   # open                 0   LV Size                599.99 GiB   Current LE             153597   Segments               2   Allocation             inherit   Read ahead sectors     auto   - currently set to     256   Block device           252:11 [root@ DBS01]# ls -l /dev/dataVG/oradata ls: cannot access /dev/dataVG/oradata: No such file or directory

(반드시 해당 경로는 언마운트 및 미사용 상태여야한다)

근데 비활성화는 쓸일 있을지 모르겠다.