[CentOS] System crashed & LVM1

Guy Boisvert boisvert.guy at videotron.ca
Wed Nov 15 15:59:49 UTC 2006


Hi all!

	I'm new to this list.  I wanted to have an opinion of the situation i'm
facing now (i'm no expert in LVM).  Last week, i had to re-install a
system which had a system hard drive crash (it was clunking before it
definitely died!).  It was running on SuSE 9.0 before.  I just finished
to install a fresh copy of CentOS 4.4 on a new hard disk.

	I want to know if it's possible to "import" the old LVM array into the
fresh CentOS install.

	We have 1 volume group (LVM1) that contains 3 whole hard drives.  I had
the time to save some informations before the system hard drive crashed
definitely: I have vgcfgrestore info, i have volgroups_001.conf, i have
the full /etc directory and pvdata.



Here is a part of the info i have:

PVDATA:
=======
--- Physical volume ---
PV Name               /dev/sda
VG Name               volgroup_001
PV Size               298.09 GB [625142448 secs] / NOT usable 32.19 MB
[LVM: 165 KB]
PV#                   1
PV Status             available
Allocatable           yes (but full)
Cur LV                1
PE Size (KByte)       32768
Total PE              9537
Free PE               0
Allocated PE          9537
PV UUID               5nc71v-D2mv-RpBX-3c3f-17tI-9ChT-mYctTg


--- Volume group ---
VG Name
VG Access             read/write
VG Status             NOT available/resizable
VG #                  0
MAX LV                256
Cur LV                1
Open LV               0
MAX LV Size           2 TB
Max PV                256
Cur PV                3
Act PV                3
VG Size               670.53 GB
PE Size               32 MB
Total PE              21457
Alloc PE / Size       21457 / 670.53 GB
Free  PE / Size       0 / 0
VG UUID               hf074V-P9DA-AmCU-F2pr-nfdD-QTaA-Ic0lH5
--- List of logical volumes ---

pvdata -- logical volume "/dev/volgroup_001/loggroup_001" at offset   0
pvdata -- logical volume struct at offset   1 is empty
pvdata -- logical volume struct at offset   2 is empty
....
pvdata -- logical volume struct at offset 254 is empty
pvdata -- logical volume struct at offset 255 is empty

--- List of physical extents ---

PE: 00000  LV: 001  LE: 00000
PE: 00001  LV: 001  LE: 00001
....
PE: 09535  LV: 001  LE: 09535
PE: 09536  LV: 001  LE: 09536

--- List of physical volume UUIDs ---

001: 5nc71v-D2mv-RpBX-3c3f-17tI-9ChT-mYctTg
002: 8bsBQR-bTiI-Zky5-Qvpu-oMtp-x62p-0uWwha
003: 6xAILO-KhgO-0U0c-Ir88-xZ8y-AIlc-JtPjDg
--- NEW Physical volume ---
PV Name               /dev/hdc
VG Name               volgroup_001
PV Size               30.21 MB [61872 secs]
PV#                   2
PV Status             NOT available
Allocatable           NO
Cur LV                0
PE Size (KByte)       0
Total PE              0
Free PE               0
Allocated PE          0
PV UUID               8bsBQR-bTiI-Zky5-Qvpu-oMtp-x62p-0uWwha

--- Volume group ---
VG Name
VG Access             read/write
VG Status             NOT available/resizable
VG #                  0
MAX LV                256
Cur LV                1
Open LV               0
MAX LV Size           2 TB
Max PV                256
Cur PV                3
Act PV                3
VG Size               670.53 GB
PE Size               32 MB
Total PE              21457
Alloc PE / Size       21457 / 670.53 GB
Free  PE / Size       0 / 0
VG UUID               hf074V-P9DA-AmCU-F2pr-nfdD-QTaA-Ic0lH5

--- List of logical volumes ---

pvdata -- logical volume "/dev/volgroup_001/loggroup_001" at offset   0
pvdata -- logical volume struct at offset   1 is empty
....
pvdata -- logical volume struct at offset 254 is empty
pvdata -- logical volume struct at offset 255 is empty

--- List of physical extents ---


--- List of physical volume UUIDs ---

001: 5nc71v-D2mv-RpBX-3c3f-17tI-9ChT-mYctTg
002: 8bsBQR-bTiI-Zky5-Qvpu-oMtp-x62p-0uWwha
003: 6xAILO-KhgO-0U0c-Ir88-xZ8y-AIlc-JtPjDg
--- Physical volume ---
PV Name               /dev/hdd
VG Name               volgroup_001
PV Size               186.31 GB [390721968 secs] / NOT usable 32.19 MB
[LVM: 151 KB]
PV#                   3
PV Status             NOT available
Allocatable           yes (but full)
Cur LV                1
PE Size (KByte)       32768
Total PE              5960
Free PE               0
Allocated PE          5960
PV UUID               6xAILO-KhgO-0U0c-Ir88-xZ8y-AIlc-JtPjDg

--- Volume group ---
VG Name
VG Access             read/write
VG Status             NOT available/resizable
VG #                  0
MAX LV                256
Cur LV                1
Open LV               0
MAX LV Size           2 TB
Max PV                256
Cur PV                3
Act PV                3
VG Size               670.53 GB
PE Size               32 MB
Total PE              21457
Alloc PE / Size       21457 / 670.53 GB
Free  PE / Size       0 / 0
VG UUID               hf074V-P9DA-AmCU-F2pr-nfdD-QTaA-Ic0lH5

--- List of logical volumes ---

pvdata -- logical volume "/dev/volgroup_001/loggroup_001" at offset   0
pvdata -- logical volume struct at offset   1 is empty
pvdata -- logical volume struct at offset   2 is empty
....
pvdata -- logical volume struct at offset 254 is empty
pvdata -- logical volume struct at offset 255 is empty

--- List of physical extents ---

PE: 00000  LV: 001  LE: 15497
PE: 00001  LV: 001  LE: 15498
....
PE: 05958  LV: 001  LE: 21455
PE: 05959  LV: 001  LE: 21456

--- List of physical volume UUIDs ---

001: 5nc71v-D2mv-RpBX-3c3f-17tI-9ChT-mYctTg
002: 8bsBQR-bTiI-Zky5-Qvpu-oMtp-x62p-0uWwha
003: 6xAILO-KhgO-0U0c-Ir88-xZ8y-AIlc-JtPjDg






lvmdiskscan -- reading all disks / partitions (this may take a while...)
lvmdiskscan -- /dev/sda    [     298.09 GB] USED LVM whole disk
lvmdiskscan -- /dev/hdc    [     186.31 GB] USED LVM whole disk
lvmdiskscan -- /dev/hdd    [     186.31 GB] USED LVM whole disk
lvmdiskscan -- /dev/hda1   [    1004.03 MB] Primary  LINUX swap
partition [0x82]
lvmdiskscan -- /dev/hda2   [      27.59 GB] Primary  LINUX native
partition [0x83]
lvmdiskscan -- /dev/hda3   [      45.95 GB] Primary  LINUX native
partition [0x83]
lvmdiskscan -- 4 disks
lvmdiskscan -- 3 whole disks
lvmdiskscan -- 0 loop devices
lvmdiskscan -- 0 multiple devices
lvmdiskscan -- 0 network block devices
lvmdiskscan -- 3 partitions
lvmdiskscan -- 0 LVM physical volume partitions


VGCFGRESTORE
============
vgcfgrestore -- INFO: using backup file "/etc/lvmconf/volgroup_001.conf"
--- Volume group ---
VG Name               volgroup_001
VG Access             read/write
VG Status             NOT available/resizable
VG #                  0
MAX LV                256
Cur LV                1
Open LV               0
MAX LV Size           2 TB
Max PV                256
Cur PV                3
Act PV                3
VG Size               670.53 GB
PE Size               32 MB
Total PE              21457
Alloc PE / Size       21457 / 670.53 GB
Free  PE / Size       0 / 0
VG UUID               hf074V-P9DA-AmCU-F2pr-nfdD-QTaA-Ic0lH5

--- Logical volume ---
LV Name                /dev/volgroup_001/loggroup_001
VG Name                volgroup_001
LV Write Access        read/write
LV Status              NOT available
LV #                   1
# open                 0
LV Size                670.53 GB
Current LE             21457
Allocated LE           21457
Allocation             next free
Read ahead sectors     1024
Block device           58:0


--- Physical volume ---
PV Name               /dev/sda
VG Name               volgroup_001
PV Size               298.09 GB [625142448 secs] / NOT usable 32.19 MB
[LVM: 165 KB]
PV#                   1
PV Status             available
Allocatable           yes (but full)
Cur LV                1
PE Size (KByte)       32768
Total PE              9537
Free PE               0
Allocated PE          9537
PV UUID               5nc71v-D2mv-RpBX-3c3f-17tI-9ChT-mYctTg

--- Physical volume ---
PV Name               /dev/hdc
VG Name               volgroup_001
PV Size               186.31 GB [390721968 secs] / NOT usable 32.19 MB
[LVM: 151 KB]
PV#                   2
PV Status             NOT available
Allocatable           yes (but full)
Cur LV                1
PE Size (KByte)       32768
Total PE              5960
Free PE               0
Allocated PE          5960
PV UUID               8bsBQR-bTiI-Zky5-Qvpu-oMtp-x62p-0uWwha

--- Physical volume ---
PV Name               /dev/hdd
VG Name               volgroup_001
PV Size               186.31 GB [390721968 secs] / NOT usable 32.19 MB
[LVM: 151 KB]
PV#                   3
PV Status             NOT available
Allocatable           yes (but full)
Cur LV                1
PE Size (KByte)       32768
Total PE              5960
Free PE               0
Allocated PE          5960
PV UUID               6xAILO-KhgO-0U0c-Ir88-xZ8y-AIlc-JtPjDg



Thanks if advance and long live to CentOS!

Guy Boisvert




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