[linux-lvm] Re: newbie problem with LVM
Argus Array
argusarray2 at gmail.com
Mon Jun 26 02:32:46 UTC 2006
I've been digging around a bit and I found that /etc/lvm/archive has some
information that might be useful for restoring my LVM data.
I've attached the latest VGforMythTV_00008.vg data (before the versions for
the new ones that I created).
I read on this blog:
http://codeworks.gnomedia.com/archives/2005/general/lvm_recovery/
that this information could be used to recreate my physical volumes using a
command like this:
[mythtv at localhost archive]# /usr/sbin/pvcreate -u
J3hQY6-8yfK-pMPS-dGhN-WFig-ENnC-LSR2nn /dev/hdb1
Can't initialize physical volume "/dev/hdb1" of volume group "VGforMythTV"
without -ff
I am hesitant to use the "-ff" (force) command without knowing what the
impact will be. Any advice?
Thanks,
-Argus
VGforMythTV_00008.vg
---------------------------------------
# Generated by LVM2: Mon Apr 11 22:59:52 2005
contents = "Text Format Volume Group"
version = 1
description = "Created *before* executing '/usr/sbin/lvextend --size +160G
/dev/VGforMythTV/video'"
creation_host = "localhost.localdomain" # Linux localhost.localdomain
2.6.10-1.737_FC3 #1 Mon Jan 10 13:50:10 EST 20
05 i686
creation_time = 1113274792 # Mon Apr 11 22:59:52 2005
VGforMythTV {
id = "YKYYOd-PcmN-lGub-gllT-6d0j-IyGp-BweNJY"
seqno = 3
status = ["RESIZEABLE", "READ", "WRITE"]
extent_size = 131072 # 64 Megabytes
max_lv = 0
max_pv = 0
physical_volumes {
pv0 {
id = "J3hQY6-8yfK-pMPS-dGhN-WFig-ENnC-LSR2nn"
device = "/dev/hdb" # Hint only
status = ["ALLOCATABLE"]
pe_start = 384
pe_count = 3038 # 189.875 Gigabytes
}
pv1 {
id = "5DR2ds-AXzi-Om4M-Mg1R-KpRQ-swOr-JHQTUa"
device = "/dev/hdc" # Hint only
status = ["ALLOCATABLE"]
pe_start = 384
pe_count = 2442 # 152.625 Gigabytes
}
}
logical_volumes {
video {
id = "gscBJa-pCAA-Yv25-kOHu-9U6z-K7iQ-1dpm42"
status = ["READ", "WRITE", "VISIBLE"]
segment_count = 1
segment1 {
start_extent = 0
extent_count = 3024 # 189 Gigabytes
type = "striped"
stripe_count = 1 # linear
stripes = [
"pv0", 0
]
}
}
}
}
On 6/23/06, Argus Array <argusarray2 at gmail.com> wrote:
>
> Terribly sorry for the double post to the mailing list, accidentally hit
> the google shortcut.
>
> I have been using LVM for several months to record video files for my PVR
> across a 200GB and 160GB disk (hdb and hdc).
>
> Recently I decided to upgrade my FC3 install to FC5. After the install,
> my LVM mount does not come up. It appeared that all of the LVM information
> in /dev/ was gone; however, only the non-LVM drive (/dev/hda) should have
> been touched by the FC5 upgrade.
>
> This is my fstab entry:
> /dev/VGforMythTV/video /var/media xfs defaults 1
> 1
>
> This is what fdisk shows:
> /dev/hdb1 1 24792 199141708+ 8e Linux LVM
>
> /dev/hdc1 1 19929 160079661 8e Linux LVM
>
> In my attempt to fix this, I think I may have totally fouled things up; I
> tried to create a new volume group with the same name and more PVs for the
> new drives, then combine them together into an PV with the old LV name.
> However, this still does not allow it to mount.
>
> Any ideas? Have I deleted all my data?
>
> Thanks for any help,
>
> Argus
>
> I've pasted my history commands below.
>
> 548 more /etc/fstab
> 549 vgcreate VGforMythTV -s 64m /dev/hda1
> 550 /usr/sbin/vgcreate VGforMythTV -s 64m /dev/hda1
> 551*
> 552 /usr/sbin/pvcreate /dev/hdb1
> 553 /usr/sbin/pvcreate /dev/hdc1
> 554 /usr/sbin/vgcreate VGforMythTV /dev/hdb1 /dev/hdc1
> 555 mount /dev/VGforMythTV /var/media
> 556 mount /dev/VGforMythTV/video /var/media
> 557 mount /dev/VGforMythTV/media /var/media
> 558 lvcreate --name video VGforMythTV
> 559 /usr/sbin/lvcreate --name video VGforMythTV
> 560 /usr/sbin/lvcreate --name video -l VGforMythTV
> 561 /usr/sbin/lvcreate --name video -l ` VGforMythTV
> 562 /usr/sbin/lvcreate --name video -l 1 VGforMythTV
> 563 mount /dev/VGforMythTV/media /var/media
> 564 mount /dev/VGforMythTV/video /var/media
> 565 mount -t xfs /dev/VGforMythTV/video /var/media
> 566 mount /dev/VGforMythTV/video /var/media
> 567 /usr/sbin/lvcreate --name video -l 2 VGforMythTV
> 568 ls
> 569 /usr/sbin/pvdisplay
> 570 /usr/sbin/lvmdiskscan
> 571 mount /dev/VGforMythTV /var/media/
> 572 mount /dev/VGforMythTV/video /var/media/
> 573 mount /dev/VGforMythTV/media /var/media/
> 574 mount /dev/VGforMythTV/video /var/media/
> 575 /sbin/fdisk /dev/hdb
> 576 /sbin/fdisk /dev/hdc
> 577 /usr/sbin/vgextend
> 578 more /etc/fstab
> 579 /usr/sbin/vgextend VGforMythTV /dev/hdb1
> 580 /usr/sbin/vgextend VGforMythTV /dev/hdb
>
>
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