* [linux-lvm] Troubling activating and mounting a volume group
@ 2004-06-03 7:15 Tim Harvey
2004-06-03 16:40 ` Tim Harvey
0 siblings, 1 reply; 3+ messages in thread
From: Tim Harvey @ 2004-06-03 7:15 UTC (permalink / raw)
To: linux-lvm
Greetings,
I'm trying to recover data from a couple of RAID arrays that were
created in a system that has died. The arrays themselves are intact.
I've been able to assemble the arrays and find logical volumes on them,
but I'm not sure how to activate the LG's and mount the volumes.
I've assembled the arrays with 3 out of the 4 disks, which should be
enough to access the data in a RAID1/5 array if I understand things
correctly without allowing RAID reconstruction. Here is some data from
my progress so far:
[root@masterbackend root]# more /proc/mdstat
Personalities : [raid1] [raid5]
read_ahead 1024 sectors
md1 : active raid1 hdb2[1] hdd2[3] hdc2[2]
513984 blocks [4/3] [_UUU]
md0 : active raid5 hdb1[1] hdd1[3] hdc1[2]
872738880 blocks level 5, 32k chunk, algorithm 2 [4/3] [_UUU]
unused devices: <none>
md0 is a RAID5 array which has a VG called 'vgroup00' and an LV called
'storage1'. md1 is a RAID1 array which as a VG called 'logdev'.
[root@masterbackend root]# vgdisplay -D
--- Volume group ---
VG Name vgroup00
VG Access read/write
VG Status NOT available/resizable
VG # 0
MAX LV 256
Cur LV 1
Open LV 0
MAX LV Size 1023.97 GB
Max PV 256
Cur PV 1
Act PV 1
VG Size 832.28 GB
PE Size 16 MB
Total PE 53266
Alloc PE / Size 53266 / 832.28 GB
Free PE / Size 0 / 0
VG UUID oizRKm-JFUq-hMiZ-rN6F-1M7u-mRDc-vqqy1p
--- Volume group ---
VG Name logdev
VG Access read/write
VG Status NOT available/resizable
VG # 1
MAX LV 256
Cur LV 2
Open LV 0
MAX LV Size 255.99 GB
Max PV 256
Cur PV 1
Act PV 1
VG Size 1.46 GB
PE Size 4 MB
Total PE 375
Alloc PE / Size 138 / 552 MB
Free PE / Size 237 / 948 MB
VG UUID nCpyXh-5bn4-Qh2W-UlAc-3dyh-zQOT-i33ow8
So far I'm not understanding how to make the VG Status 'available' and
how to mount them. I now have the following devices:
/dev/vgroup00/storage1 block special (58/2)
/dev/vgroup00/group character special (109/0)
/dev/logdev/storage1 block special (58/1)
/dev/logdev/syslog block special (58/0)
/dev/logdev/group character special (109/1)
I believe these are XFS but I still can't mount them via:
[root@masterbackend root]# mount /dev/vgroup00/storage1 /mnt/array/ -t
xfs
mount: wrong fs type, bad option, bad superblock on
/dev/vgroup00/storage1,
or too many mounted file systems
Any ideas? I'm not familiar with LVM, but have been googling it.
Thanks for any help,
Tim
^ permalink raw reply [flat|nested] 3+ messages in thread
* RE: [linux-lvm] Troubling activating and mounting a volume group
2004-06-03 7:15 [linux-lvm] Troubling activating and mounting a volume group Tim Harvey
@ 2004-06-03 16:40 ` Tim Harvey
2004-06-03 17:12 ` Tim Harvey
0 siblings, 1 reply; 3+ messages in thread
From: Tim Harvey @ 2004-06-03 16:40 UTC (permalink / raw)
To: linux-lvm
As I learn more about LVM, let me add some more info:
[root@masterbackend array]# more /proc/lvm/global
LVM module LVM version 1.0.7(28/03/2003)
Total: 2 VGs 2 PVs 3 LVs (0 LVs open)
Global: 862101 bytes malloced IOP version: 10 10:03:51 active
VG: vgroup00 [1 PV, 1 LV/0 open] PE Size: 16384 KB
Usage [KB/PE]: 872710144 /53266 total 872710144 /53266 used 0 /0
free
PV: [AA] md0 872710144 /53266 872710144 /53266
0 /0
LV: [AWDL ] storage1 872710144 /53266 close
VG: logdev [1 PV, 2 LV/0 open] PE Size: 4096 KB
Usage [KB/PE]: 1536000 /375 total 565248 /138 used 970752 /237 free
PV: [AA] md2 1536000 /375 565248 /138
970752 /237
LVs: [AWDL ] syslog 524288 /128 close
[AWDL ] storage1 40960 /10 close
[root@masterbackend root]# lvdisplay /dev/vgroup00/storage1
--- Logical volume ---
LV Name /dev/vgroup00/storage1
VG Name vgroup00
LV Write Access read/write
LV Status available
LV # 1
# open 0
LV Size 832.28 GB
Current LE 53266
Allocated LE 53266
Allocation next free
Read ahead sectors 1024
Block device 58:2
[root@masterbackend root]# lvdisplay /dev/logdev/storage1
--- Logical volume ---
LV Name /dev/logdev/storage1
VG Name logdev
LV Write Access read/write
LV Status available
LV # 2
# open 0
LV Size 40 MB
Current LE 10
Allocated LE 10
Allocation next free
Read ahead sectors 1024
Block device 58:1
[root@masterbackend root]# lvdisplay /dev/logdev/syslog
--- Logical volume ---
LV Name /dev/logdev/syslog
VG Name logdev
LV Write Access read/write
LV Status available
LV # 1
# open 0
LV Size 512 MB
Current LE 128
Allocated LE 128
Allocation next free
Read ahead sectors 1024
Block device 58:0
I have been able to mount /dev/logdev/syslog:
[root@masterbackend root]# mount -t xfs /dev/logdev/syslog /mnt/syslog/
[root@masterbackend root]# ls /mnt/array/
initlog.txt internal.bak internal.txt nfs samba syslog.bak
syslog.txt
However, I cannot mount the other two XFS filesystems:
[root@masterbackend root]# mount -t xfs /dev/logdev/storage1
/mnt/storage1
mount: wrong fs type, bad option, bad superblock on
/dev/logdev/storage1,
or too many mounted file systems
[root@masterbackend root]# mount -t xfs /dev/vgroup00/storage1
/mnt/storage1
mount: wrong fs type, bad option, bad superblock on
/dev/vgroup00/storage1,
or too many mounted file systems
All three of these LVs appear to be XFS filesystems:
[root@masterbackend root]# hexdump -C -n 1024 /dev/logdev/syslog
00000000 58 46 53 42 00 00 10 00 00 00 00 00 00 02 00 00
|XFSB............|
00000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
00000020 ac 47 30 43 a8 28 44 2f ad 35 91 da b3 59 b3 80
|.G0C.(D/.5...Y..|
00000030 00 00 00 00 00 01 00 04 00 00 00 00 00 00 00 80
|................|
00000040 00 00 00 00 00 00 00 81 00 00 00 00 00 00 00 82
|................|
00000050 00 00 00 10 00 00 40 00 00 00 00 08 00 00 00 00
|......@.........|
00000060 00 00 04 b0 20 84 02 00 01 00 00 10 00 00 00 00 |....
...........|
00000070 00 00 00 00 00 00 00 00 0c 09 08 04 0e 00 00 19
|................|
00000080 00 00 00 00 00 00 02 00 00 00 00 00 00 00 01 cb
|................|
00000090 00 00 00 00 00 01 f9 b7 00 00 00 00 00 00 00 00
|................|
000000a0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
000000b0 00 00 00 00 00 00 00 02 00 00 00 00 00 00 00 00
|................|
000000c0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
*
00000200 58 41 47 46 00 00 00 01 00 00 00 00 00 00 40 00
|XAGF..........@.|
00000210 00 00 00 01 00 00 00 02 00 00 00 00 00 00 00 01
|................|
00000220 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 03
|................|
00000230 00 00 00 04 00 00 3f cd 00 00 3f 84 00 00 00 00
|......?...?.....|
00000240 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
*
00000400
[root@masterbackend root]# hexdump -C -n 1024 /dev/logdev/storage1
00000000 fe ed ba be 00 00 00 01 00 00 00 01 00 00 00 14
|................|
00000010 00 00 00 01 00 00 00 00 00 00 00 01 00 00 00 00
|................|
00000020 00 00 00 00 ff ff ff ff 00 00 00 01 b0 c0 d0 d0
|................|
00000030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
*
00000120 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01
|................|
00000130 0f ef 3b 71 68 eb 4b 0b a4 e7 88 1c 35 8b 33 c7
|..;qh.K.....5.3.|
00000140 00 00 80 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
00000150 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
*
00000200 00 00 00 01 00 00 00 08 aa 20 00 00 6e 55 00 00 |.........
..nU..|
00000210 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
*
00000400
[root@masterbackend root]# hexdump -C -n 1024 /dev/vgroup00/storage1
00000000 58 46 53 42 00 00 10 00 00 00 00 00 0d 01 20 00
|XFSB.......... .|
00000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
00000020 0f ef 3b 71 68 eb 4b 0b a4 e7 88 1c 35 8b 33 c7
|..;qh.K.....5.3.|
00000030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80
|................|
00000040 00 00 00 00 00 00 00 81 00 00 00 00 00 00 00 82
|................|
00000050 00 00 00 10 00 10 00 00 00 00 00 d1 00 00 00 00
|................|
00000060 00 00 27 10 20 d4 02 00 01 00 00 10 00 00 00 00 |..'.
...........|
00000070 00 00 00 00 00 00 00 00 0c 09 08 04 14 00 00 19
|................|
00000080 00 00 00 00 00 00 01 80 00 00 00 00 00 00 01 71
|...............q|
00000090 00 00 00 00 0d 01 18 67 00 00 00 00 00 00 00 00
|.......g........|
000000a0 00 00 00 00 00 00 00 83 00 00 00 00 00 00 00 84
|................|
000000b0 00 77 00 00 00 00 00 02 00 00 00 00 00 00 00 00
|.w..............|
000000c0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
*
00000200 58 41 47 46 00 00 00 01 00 00 00 00 00 10 00 00
|XAGF............|
00000210 00 00 00 01 00 00 00 02 00 00 00 00 00 00 00 01
|................|
00000220 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 03
|................|
00000230 00 00 00 04 00 0f ff e9 00 0f fe 62 00 00 00 00
|...........b....|
00000240 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
|................|
*
00000400
Any ideas? I'm desperate to get the data off of these filesystems.
Thanks,
Tim
> -----Original Message-----
> From: linux-lvm-bounces@redhat.com
[mailto:linux-lvm-bounces@redhat.com]
> On Behalf Of Tim Harvey
> Sent: Thursday, June 03, 2004 12:16 AM
> To: linux-lvm@redhat.com
> Subject: [linux-lvm] Troubling activating and mounting a volume group
>
> Greetings,
>
> I'm trying to recover data from a couple of RAID arrays that were
> created in a system that has died. The arrays themselves are intact.
>
> I've been able to assemble the arrays and find logical volumes on
them,
> but I'm not sure how to activate the LG's and mount the volumes.
>
> I've assembled the arrays with 3 out of the 4 disks, which should be
> enough to access the data in a RAID1/5 array if I understand things
> correctly without allowing RAID reconstruction. Here is some data
from
> my progress so far:
>
> [root@masterbackend root]# more /proc/mdstat
> Personalities : [raid1] [raid5]
> read_ahead 1024 sectors
> md1 : active raid1 hdb2[1] hdd2[3] hdc2[2]
> 513984 blocks [4/3] [_UUU]
>
> md0 : active raid5 hdb1[1] hdd1[3] hdc1[2]
> 872738880 blocks level 5, 32k chunk, algorithm 2 [4/3] [_UUU]
>
> unused devices: <none>
>
> md0 is a RAID5 array which has a VG called 'vgroup00' and an LV called
> 'storage1'. md1 is a RAID1 array which as a VG called 'logdev'.
>
> [root@masterbackend root]# vgdisplay -D
> --- Volume group ---
> VG Name vgroup00
> VG Access read/write
> VG Status NOT available/resizable
> VG # 0
> MAX LV 256
> Cur LV 1
> Open LV 0
> MAX LV Size 1023.97 GB
> Max PV 256
> Cur PV 1
> Act PV 1
> VG Size 832.28 GB
> PE Size 16 MB
> Total PE 53266
> Alloc PE / Size 53266 / 832.28 GB
> Free PE / Size 0 / 0
> VG UUID oizRKm-JFUq-hMiZ-rN6F-1M7u-mRDc-vqqy1p
>
> --- Volume group ---
> VG Name logdev
> VG Access read/write
> VG Status NOT available/resizable
> VG # 1
> MAX LV 256
> Cur LV 2
> Open LV 0
> MAX LV Size 255.99 GB
> Max PV 256
> Cur PV 1
> Act PV 1
> VG Size 1.46 GB
> PE Size 4 MB
> Total PE 375
> Alloc PE / Size 138 / 552 MB
> Free PE / Size 237 / 948 MB
> VG UUID nCpyXh-5bn4-Qh2W-UlAc-3dyh-zQOT-i33ow8
>
> So far I'm not understanding how to make the VG Status 'available' and
> how to mount them. I now have the following devices:
>
> /dev/vgroup00/storage1 block special (58/2)
> /dev/vgroup00/group character special (109/0)
> /dev/logdev/storage1 block special (58/1)
> /dev/logdev/syslog block special (58/0)
> /dev/logdev/group character special (109/1)
>
> I believe these are XFS but I still can't mount them via:
>
> [root@masterbackend root]# mount /dev/vgroup00/storage1 /mnt/array/ -t
> xfs
> mount: wrong fs type, bad option, bad superblock on
> /dev/vgroup00/storage1,
> or too many mounted file systems
>
> Any ideas? I'm not familiar with LVM, but have been googling it.
>
> Thanks for any help,
>
> Tim
>
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
^ permalink raw reply [flat|nested] 3+ messages in thread
* RE: [linux-lvm] Troubling activating and mounting a volume group
2004-06-03 16:40 ` Tim Harvey
@ 2004-06-03 17:12 ` Tim Harvey
0 siblings, 0 replies; 3+ messages in thread
From: Tim Harvey @ 2004-06-03 17:12 UTC (permalink / raw)
To: linux-lvm
I found the answer to my question. This has been a rather interesting
puzzle as the original NAS device was a black box and I've had to try
and figure out how they store the data. The /dev/logdev/storage1 was
the 'log device' for the XFS filesystem in /dev/vgroup00/storage1. I
was able to mount my filesystem using:
[root@masterbackend root]# mount -t xfs -o logdev=/dev/logdev/storage1
/dev/vgr
Success finally!
Tim
> -----Original Message-----
> From: linux-lvm-bounces@redhat.com
[mailto:linux-lvm-bounces@redhat.com]
> On Behalf Of Tim Harvey
> Sent: Thursday, June 03, 2004 9:41 AM
> To: linux-lvm@redhat.com
> Subject: RE: [linux-lvm] Troubling activating and mounting a volume
group
>
> As I learn more about LVM, let me add some more info:
>
> [root@masterbackend array]# more /proc/lvm/global
> LVM module LVM version 1.0.7(28/03/2003)
>
> Total: 2 VGs 2 PVs 3 LVs (0 LVs open)
> Global: 862101 bytes malloced IOP version: 10 10:03:51 active
>
> VG: vgroup00 [1 PV, 1 LV/0 open] PE Size: 16384 KB
> Usage [KB/PE]: 872710144 /53266 total 872710144 /53266 used 0 /0
> free
> PV: [AA] md0 872710144 /53266 872710144 /53266
> 0 /0
> LV: [AWDL ] storage1 872710144 /53266 close
>
> VG: logdev [1 PV, 2 LV/0 open] PE Size: 4096 KB
> Usage [KB/PE]: 1536000 /375 total 565248 /138 used 970752 /237
free
> PV: [AA] md2 1536000 /375 565248 /138
> 970752 /237
> LVs: [AWDL ] syslog 524288 /128 close
> [AWDL ] storage1 40960 /10 close
>
>
> [root@masterbackend root]# lvdisplay /dev/vgroup00/storage1
> --- Logical volume ---
> LV Name /dev/vgroup00/storage1
> VG Name vgroup00
> LV Write Access read/write
> LV Status available
> LV # 1
> # open 0
> LV Size 832.28 GB
> Current LE 53266
> Allocated LE 53266
> Allocation next free
> Read ahead sectors 1024
> Block device 58:2
>
> [root@masterbackend root]# lvdisplay /dev/logdev/storage1
> --- Logical volume ---
> LV Name /dev/logdev/storage1
> VG Name logdev
> LV Write Access read/write
> LV Status available
> LV # 2
> # open 0
> LV Size 40 MB
> Current LE 10
> Allocated LE 10
> Allocation next free
> Read ahead sectors 1024
> Block device 58:1
>
> [root@masterbackend root]# lvdisplay /dev/logdev/syslog
> --- Logical volume ---
> LV Name /dev/logdev/syslog
> VG Name logdev
> LV Write Access read/write
> LV Status available
> LV # 1
> # open 0
> LV Size 512 MB
> Current LE 128
> Allocated LE 128
> Allocation next free
> Read ahead sectors 1024
> Block device 58:0
>
> I have been able to mount /dev/logdev/syslog:
> [root@masterbackend root]# mount -t xfs /dev/logdev/syslog
/mnt/syslog/
> [root@masterbackend root]# ls /mnt/array/
> initlog.txt internal.bak internal.txt nfs samba syslog.bak
> syslog.txt
>
> However, I cannot mount the other two XFS filesystems:
> [root@masterbackend root]# mount -t xfs /dev/logdev/storage1
> /mnt/storage1
> mount: wrong fs type, bad option, bad superblock on
> /dev/logdev/storage1,
> or too many mounted file systems
> [root@masterbackend root]# mount -t xfs /dev/vgroup00/storage1
> /mnt/storage1
> mount: wrong fs type, bad option, bad superblock on
> /dev/vgroup00/storage1,
> or too many mounted file systems
>
> All three of these LVs appear to be XFS filesystems:
>
> [root@masterbackend root]# hexdump -C -n 1024 /dev/logdev/syslog
> 00000000 58 46 53 42 00 00 10 00 00 00 00 00 00 02 00 00
> |XFSB............|
> 00000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> |................|
> 00000020 ac 47 30 43 a8 28 44 2f ad 35 91 da b3 59 b3 80
> |.G0C.(D/.5...Y..|
> 00000030 00 00 00 00 00 01 00 04 00 00 00 00 00 00 00 80
> |................|
> 00000040 00 00 00 00 00 00 00 81 00 00 00 00 00 00 00 82
> |................|
> 00000050 00 00 00 10 00 00 40 00 00 00 00 08 00 00 00 00
> |......@.........|
> 00000060 00 00 04 b0 20 84 02 00 01 00 00 10 00 00 00 00 |....
> ...........|
> 00000070 00 00 00 00 00 00 00 00 0c 09 08 04 0e 00 00 19
> |................|
> 00000080 00 00 00 00 00 00 02 00 00 00 00 00 00 00 01 cb
> |................|
> 00000090 00 00 00 00 00 01 f9 b7 00 00 00 00 00 00 00 00
> |................|
> 000000a0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> |................|
> 000000b0 00 00 00 00 00 00 00 02 00 00 00 00 00 00 00 00
> |................|
> 000000c0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> |................|
> *
> 00000200 58 41 47 46 00 00 00 01 00 00 00 00 00 00 40 00
> |XAGF..........@.|
> 00000210 00 00 00 01 00 00 00 02 00 00 00 00 00 00 00 01
> |................|
> 00000220 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 03
> |................|
> 00000230 00 00 00 04 00 00 3f cd 00 00 3f 84 00 00 00 00
> |......?...?.....|
> 00000240 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> |................|
> *
> 00000400
>
> [root@masterbackend root]# hexdump -C -n 1024 /dev/logdev/storage1
> 00000000 fe ed ba be 00 00 00 01 00 00 00 01 00 00 00 14
> |................|
> 00000010 00 00 00 01 00 00 00 00 00 00 00 01 00 00 00 00
> |................|
> 00000020 00 00 00 00 ff ff ff ff 00 00 00 01 b0 c0 d0 d0
> |................|
> 00000030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> |................|
> *
> 00000120 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01
> |................|
> 00000130 0f ef 3b 71 68 eb 4b 0b a4 e7 88 1c 35 8b 33 c7
> |..;qh.K.....5.3.|
> 00000140 00 00 80 00 00 00 00 00 00 00 00 00 00 00 00 00
> |................|
> 00000150 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> |................|
> *
> 00000200 00 00 00 01 00 00 00 08 aa 20 00 00 6e 55 00 00 |.........
> ..nU..|
> 00000210 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> |................|
> *
> 00000400
> [root@masterbackend root]# hexdump -C -n 1024 /dev/vgroup00/storage1
> 00000000 58 46 53 42 00 00 10 00 00 00 00 00 0d 01 20 00
> |XFSB.......... .|
> 00000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> |................|
> 00000020 0f ef 3b 71 68 eb 4b 0b a4 e7 88 1c 35 8b 33 c7
> |..;qh.K.....5.3.|
> 00000030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80
> |................|
> 00000040 00 00 00 00 00 00 00 81 00 00 00 00 00 00 00 82
> |................|
> 00000050 00 00 00 10 00 10 00 00 00 00 00 d1 00 00 00 00
> |................|
> 00000060 00 00 27 10 20 d4 02 00 01 00 00 10 00 00 00 00 |..'.
> ...........|
> 00000070 00 00 00 00 00 00 00 00 0c 09 08 04 14 00 00 19
> |................|
> 00000080 00 00 00 00 00 00 01 80 00 00 00 00 00 00 01 71
> |...............q|
> 00000090 00 00 00 00 0d 01 18 67 00 00 00 00 00 00 00 00
> |.......g........|
> 000000a0 00 00 00 00 00 00 00 83 00 00 00 00 00 00 00 84
> |................|
> 000000b0 00 77 00 00 00 00 00 02 00 00 00 00 00 00 00 00
> |.w..............|
> 000000c0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> |................|
> *
> 00000200 58 41 47 46 00 00 00 01 00 00 00 00 00 10 00 00
> |XAGF............|
> 00000210 00 00 00 01 00 00 00 02 00 00 00 00 00 00 00 01
> |................|
> 00000220 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 03
> |................|
> 00000230 00 00 00 04 00 0f ff e9 00 0f fe 62 00 00 00 00
> |...........b....|
> 00000240 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> |................|
> *
> 00000400
>
> Any ideas? I'm desperate to get the data off of these filesystems.
>
> Thanks,
>
> Tim
>
> > -----Original Message-----
> > From: linux-lvm-bounces@redhat.com
> [mailto:linux-lvm-bounces@redhat.com]
> > On Behalf Of Tim Harvey
> > Sent: Thursday, June 03, 2004 12:16 AM
> > To: linux-lvm@redhat.com
> > Subject: [linux-lvm] Troubling activating and mounting a volume
group
> >
> > Greetings,
> >
> > I'm trying to recover data from a couple of RAID arrays that were
> > created in a system that has died. The arrays themselves are
intact.
> >
> > I've been able to assemble the arrays and find logical volumes on
> them,
> > but I'm not sure how to activate the LG's and mount the volumes.
> >
> > I've assembled the arrays with 3 out of the 4 disks, which should be
> > enough to access the data in a RAID1/5 array if I understand things
> > correctly without allowing RAID reconstruction. Here is some data
> from
> > my progress so far:
> >
> > [root@masterbackend root]# more /proc/mdstat
> > Personalities : [raid1] [raid5]
> > read_ahead 1024 sectors
> > md1 : active raid1 hdb2[1] hdd2[3] hdc2[2]
> > 513984 blocks [4/3] [_UUU]
> >
> > md0 : active raid5 hdb1[1] hdd1[3] hdc1[2]
> > 872738880 blocks level 5, 32k chunk, algorithm 2 [4/3] [_UUU]
> >
> > unused devices: <none>
> >
> > md0 is a RAID5 array which has a VG called 'vgroup00' and an LV
called
> > 'storage1'. md1 is a RAID1 array which as a VG called 'logdev'.
> >
> > [root@masterbackend root]# vgdisplay -D
> > --- Volume group ---
> > VG Name vgroup00
> > VG Access read/write
> > VG Status NOT available/resizable
> > VG # 0
> > MAX LV 256
> > Cur LV 1
> > Open LV 0
> > MAX LV Size 1023.97 GB
> > Max PV 256
> > Cur PV 1
> > Act PV 1
> > VG Size 832.28 GB
> > PE Size 16 MB
> > Total PE 53266
> > Alloc PE / Size 53266 / 832.28 GB
> > Free PE / Size 0 / 0
> > VG UUID oizRKm-JFUq-hMiZ-rN6F-1M7u-mRDc-vqqy1p
> >
> > --- Volume group ---
> > VG Name logdev
> > VG Access read/write
> > VG Status NOT available/resizable
> > VG # 1
> > MAX LV 256
> > Cur LV 2
> > Open LV 0
> > MAX LV Size 255.99 GB
> > Max PV 256
> > Cur PV 1
> > Act PV 1
> > VG Size 1.46 GB
> > PE Size 4 MB
> > Total PE 375
> > Alloc PE / Size 138 / 552 MB
> > Free PE / Size 237 / 948 MB
> > VG UUID nCpyXh-5bn4-Qh2W-UlAc-3dyh-zQOT-i33ow8
> >
> > So far I'm not understanding how to make the VG Status 'available'
and
> > how to mount them. I now have the following devices:
> >
> > /dev/vgroup00/storage1 block special (58/2)
> > /dev/vgroup00/group character special (109/0)
> > /dev/logdev/storage1 block special (58/1)
> > /dev/logdev/syslog block special (58/0)
> > /dev/logdev/group character special (109/1)
> >
> > I believe these are XFS but I still can't mount them via:
> >
> > [root@masterbackend root]# mount /dev/vgroup00/storage1 /mnt/array/
-t
> > xfs
> > mount: wrong fs type, bad option, bad superblock on
> > /dev/vgroup00/storage1,
> > or too many mounted file systems
> >
> > Any ideas? I'm not familiar with LVM, but have been googling it.
> >
> > Thanks for any help,
> >
> > Tim
> >
> >
> > _______________________________________________
> > linux-lvm mailing list
> > linux-lvm@redhat.com
> > https://www.redhat.com/mailman/listinfo/linux-lvm
> > read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2004-06-03 17:14 UTC | newest]
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2004-06-03 7:15 [linux-lvm] Troubling activating and mounting a volume group Tim Harvey
2004-06-03 16:40 ` Tim Harvey
2004-06-03 17:12 ` Tim Harvey
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