외장 스토리지가 붙지 않은게 아닐까요..?

lvm 이 그렇게 아무런 이유 없이 사라지는 경우는 아직 보지 못했습니다.

저도 신기합니다. ㅡㅡ;
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파일서버들 몇대를 lvm으로 구성해놨는데요..
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유독 외장스토리지 붙은 녀석만 그러네요. ㅡㅡ;
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red ~ # parted /dev/sdb print

Disk /dev/sdb: 4996GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number Start End Size File system Name Flags
1 17.4kB 4996GB 4996GB primary lvm

Information: Don't forget to update /etc/fstab, if necessary.
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이렇게 제대로 인식되어있다고 나옵니다. ㅡㅜ
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dmesg로도 잘 보이구요. +_+
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도대체 어디가 문제일지. ㅡㅡㅋ
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No pains! No gains!ㅇ

혹시나 해서

red ~ # vgcreate -t vg04 /dev/sdb1
Test mode: Metadata will NOT be updated.
No physical volume label read from /dev/sdb1
/dev/sdb1 not identified as an existing physical volume
Unable to add physical volume '/dev/sdb1' to volume group 'vg04'.

red ~ # pvcreate -t /dev/sdb1
Test mode: Metadata will NOT be updated.
Physical volume "/dev/sdb1" successfully created

이렇게 해보니. ㅡㅡ

Physical Volume 이 사라졌다고 나옵니다. ㅜㅜ
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혹시 이게 2TB 를 넘는 용량과도 관계가 있을까요?
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Physical Volume을 살리려면 어떻게 해야 할까요?
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그냥 pvcreate로 생성하면, 혹 살릴수 있을(?) 데이터도 날릴거 같아서 아직 시도를 안해봤습니다..+_+
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No pains! No gains!

lvm2에서의 Metadata는 어디에 저장되는건가요? +_+a
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혹시 PV는 무엇이며 LV는 무엇이며 등등...
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의 파일이 어딘가에 텍스트 형태로 저장되어 있지는 않나요? ^^;
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ps. 하도 답답해서 혹시나 하고 여쭈어봤습니다. ㅡㅜ

No pains! No gains!

lvm2 에 관련된 정보는 /etc/lvm 디렉토리 안에 있습니다.

그러나 별다른 영향있는 메세지는 없습니다.

혹시나 추측 하건데 정전으로 인해 디바이스가 인식 되는 순서에 문제가 있어서

디바이스로는 인식 되어 있으나 lvm 으로 active 가 안되어 있을 가능성이 보입니다.

vgscan, vgchange -ay 라는 명령어를 차례로 실행 하고 난뒤

vgs, lvs 등으로 vg, lv 가 인식이 되는지 확인해 보시기 바랍니다.

vgscan결과입니다.

red ~ # vgscan -vv
Setting global/locking_type to 1
Setting global/locking_dir to /var/lock/lvm
File-based locking enabled.
Wiping cache of LVM-capable devices
Wiping internal VG cache
Reading all physical volumes. This may take a while...
Finding all volume groups
/dev/loop0: size is 0 sectors
/dev/sda: size is 143638992 sectors
/dev/vg01/var: size is 20971520 sectors
/dev/vg01/var: size is 20971520 sectors
/dev/vg01/var: No label detected
/dev/loop1: size is 0 sectors
/dev/sda1: size is 8016372 sectors
/dev/sda1: size is 8016372 sectors
/dev/sda1: No label detected
/dev/vg01/usr: size is 20971520 sectors
/dev/vg01/usr: size is 20971520 sectors
/dev/vg01/usr: No label detected
/dev/loop2: size is 0 sectors
/dev/sda2: size is 8016435 sectors
/dev/sda2: size is 8016435 sectors
/dev/sda2: No label detected
/dev/vg01/home: size is 20971520 sectors
/dev/vg01/home: size is 20971520 sectors
/dev/vg01/home: No label detected
/dev/loop3: size is 0 sectors
/dev/sda3: size is 127604295 sectors
/dev/sda3: size is 127604295 sectors
/dev/sda3: lvm2 label detected
/dev/loop4: size is 0 sectors
/dev/loop5: size is 0 sectors
/dev/loop6: size is 0 sectors
/dev/loop7: size is 0 sectors
/dev/sdb: size is 9757245440 sectors
/dev/sdb1: size is 4294967295 sectors
/dev/sdb1: size is 4294967295 sectors
/dev/sdb1: No label detected
Locking /var/lock/lvm/V_vg01 RB
Finding volume group "vg01"
/dev/sda3: lvm2 label detected
/dev/sda3: lvm2 label detected
Found volume group "vg01" using metadata type lvm2
Unlocking /var/lock/lvm/V_vg01

화살표한 /dev/sdb1이 사라진 pv 입니다..

red ~ # vgchange -ay
3 logical volume(s) in volume group "vg01" now active

vg02가 사라진 볼륨그룹인데 안나타나네요. ㅡㅜ

vgs 결과입니다.

red ~ # vgs -vv
Setting global/locking_type to 1
Setting global/locking_dir to /var/lock/lvm
File-based locking enabled.
report/aligned not found in config: defaulting to 1
report/buffered not found in config: defaulting to 1
report/headings not found in config: defaulting to 1
report/separator not found in config: defaulting to
report/vgs_sort not found in config: defaulting to vg_name
report/vgs_cols_verbose not found in config: defaulting to vg_name,vg_attr,vg_extent_size,pv_count,lv_count,snap_count,vg_size,vg_free,vg_uuid
Finding all volume groups
/dev/vg01/var: No label detected
/dev/sda1: No label detected
/dev/vg01/usr: No label detected
/dev/sda2: No label detected
/dev/vg01/home: No label detected
/dev/sda3: lvm2 label detected
/dev/sdb1: No label detected
Locking /var/lock/lvm/V_vg01 RB
Finding volume group "vg01"
/dev/sda3: lvm2 label detected
/dev/sda3: lvm2 label detected
Unlocking /var/lock/lvm/V_vg01
VG Attr Ext #PV #LV #SN VSize VFree VG UUID
vg01 wz--n- 4.00M 1 3 0 60.84G 30.84G bq3T0m-nT4D-5HT7-DnBG-i91z-j58K-VKYudm

lvs결과입니다

red ~ # lvs -vv
Setting global/locking_type to 1
Setting global/locking_dir to /var/lock/lvm
File-based locking enabled.
report/aligned not found in config: defaulting to 1
report/buffered not found in config: defaulting to 1
report/headings not found in config: defaulting to 1
report/separator not found in config: defaulting to
report/lvs_sort not found in config: defaulting to vg_name,lv_name
report/lvs_cols_verbose not found in config: defaulting to lv_name,vg_name,seg_count,lv_attr,lv_size,lv_major,lv_minor,lv_kernel_major,lv_kernel_minor,origin,snap_percent,move_pv,copy_percent,mirror_log,lv_uuid
Finding all logical volumes
/dev/vg01/var: No label detected
/dev/sda1: No label detected
/dev/vg01/usr: No label detected
/dev/sda2: No label detected
/dev/vg01/home: No label detected
/dev/sda3: lvm2 label detected
/dev/sdb1: No label detected
Locking /var/lock/lvm/V_vg01 RB
/dev/sda3: lvm2 label detected
/dev/sda3: lvm2 label detected
Unlocking /var/lock/lvm/V_vg01
LV VG #Seg Attr LSize Maj Min KMaj KMin Origin Snap% Move Copy% Log LV UUID
home vg01 1 -wi-ao 10.00G -1 -1 254 2 IMscq9-kT4X-iDyT-mQZD-wxG4-f8ph-VywwQM
usr vg01 1 -wi-ao 10.00G -1 -1 254 1 2BHfaM-xxpP-4o7Q-iGdd-dmVu-RI0e-O4e7UX
var vg01 1 -wi-ao 10.00G -1 -1 254 0 vfmQwc-kbVl-4iga-bYL3-cTar-U3id-g1t7Wg

Physical Volume을 인식하지 못하니.. 그위에꺼는 다 인식이 안되는듯 한데..
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어째서 이런일이 생겼는지 모르겠습니다. +_+
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No pains! No gains!

데이터를 날리는셈 치고,
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다시 빌드하려고,
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red ~ # pvcreate /dev/sdb1
Physical volume "/dev/sdb1" successfully created
red ~ # pvdisplay
--- Physical volume ---
PV Name /dev/sda3
VG Name vg01
PV Size 60.84 GB / not usable 0
Allocatable yes
PE Size (KByte) 4096
Total PE 15576
Free PE 7896
Allocated PE 7680
PV UUID kUKxEL-aVIN-L1qV-nbJb-kCly-ebgk-kxE0Uz

red ~ #

pvcreate 는 성공했다 나오는데,,,
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pvdisplay에는 아무것도 안나옵니다. ㅡㅡ;;;;
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우째 이런일이. ㅜㅜ
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No pains! No gains!

저두 갑자기 vg정보가 사라지는 바람에 고생하고 있는데....

.... PV는 살아 있으나 VG MAP정보가 없으니 VG를 IMPORT 할수가 없네요. ㅠ.ㅠ

파티션 기반이였으면 이런일은 없을텐데요. ㅠ.ㅠ