[linux-lvm] Lost my physical volume on reboot?

[Heinz J. Mauelshagen]

Ron,

your output below shows, that your partition table on /dev/hdc is gone.

Could you please try to

 - recreate the partition table with the same content as before;
   you potentially need a reboot after this in order to make the kernel
   recognize the new partition setup; check /proc/partitions before
 - pvscan again
 - in case the PV shows up again "vgscan;vgchange -ay"
 - if pvscan doesn't find your PV run "vgcfgrestore -n vg02 /dev/hdc1"
 - and rerun "vgscan;vgchange -ay"

IHTH (I Hope That Helps ;-)

Regards,
Heinz    -- The LVM Guy --


On Mon, Jul 02, 2001 at 11:15:52AM -0500, Vissers, Ron wrote:
> Hi,
> 
> Bear with me, I'm new to LVM in Linux.  More accustomed to HPUX.
> 
> Anyway, I seem to have lost my /dev/hdc1 physical volume and my /dev/vg02
> volume group, etc.  
> 
> Suggestions on where to begin?
> 
> Thanks,
> ---------------------------------------------------------------------
> 
> (rvissers:root) /root # uname -a
> Linux rvissers 2.4.2 #2 Thu Apr 5 13:56:11 CDT 2001 i686 unknown
> 
> (rvissers:root) /usr/local/bin # cat /proc/lvm/global
> LVM driver version 0.9.1_CVS (Date_CVS)
>  
> Total:  0 VGs  0 PVs  0 LVs (0 LVs open)
> Global: 149 bytes malloced   IOP version: 10   7 days 8:34:47 active
> 
> 
> (rvissers:root) /root # pvscan /dev/hdc1
> pvscan -- reading all physical volumes (this may take a while...)
> pvscan -- ERROR "pv_read(): read" reading physical volumes
> 
> 
> (rvissers:root) /root # pvdisplay /dev/hdc1
> pvdisplay -- ERROR "pv_get_size(): lvm_dir_cache" getting size of physical
> volume "/dev/hdc1"
> 
> 
> (rvissers:root) /root # fdisk -l /dev/hdc1
>  
> Disk /dev/hdc1: 255 heads, 63 sectors, 1826 cylinders
> Units = cylinders of 16065 * 512 bytes
>  
>      Device Boot    Start       End    Blocks   Id  System
> 
> 
> (rvissers:root) /root # ls /etc/lvmconf
> vg02.conf  vg02.conf.1.old  vg02.conf.2.old
> (rvissers:root) /root # vgcfgrestore -n vg02 -ll
> --- Volume group ---
> VG Name               vg02
> VG Access             read/write
> VG Status             NOT available/resizable
> VG #                  0
> MAX LV                256
> Cur LV                1
> Open LV               0
> MAX LV Size           255.99 GB
> Max PV                256
> Cur PV                1
> Act PV                1
> VG Size               13.98 GB
> PE Size               4 MB
> Total PE              3580
> Alloc PE / Size       2048 / 8 GB
> Free  PE / Size       1532 / 5.98 GB
> VG UUID               w91qX3-pAKn-GAOU-NRVi-Gnvf-xmTL-nWgG3E
> 
> --- Logical volume ---
> LV Name                /dev/vg02/lvol1
> VG Name                vg02
> LV Write Access        read/write
> LV Status              NOT available
> LV #                   1
> # open                 0
> LV Size                8 GB
> Current LE             2048
> Allocated LE           2048
> Allocation             next free
> Read ahead sectors     120
> Block device           58:0
> 
> 
> --- Physical volume ---
> PV Name               /dev/hdc1
> VG Name               vg02
> PV Size               13.99 GB / NOT usable 3.55 MB [LVM: 134 KB]
> PV#                   1
> PV Status             available
> Allocatable           yes
> Cur LV                1
> PE Size (KByte)       4096
> Total PE              3580
> Free PE               1532
> Allocated PE          2048
> PV UUID               VFfrsv-or0w-vP6L-EJ9B-c23n-sVF5-dX37jF
>  
>  
>  
> (rvissers:root) /root # vgscan
> vgscan -- reading all physical volumes (this may take a while...)
> vgscan -- "/etc/lvmtab" and "/etc/lvmtab.d" successfully created
> vgscan -- WARNING: This program does not do a VGDA backup of your volume
> group
> 
> 
> 
> 
>      _/_/   _/_/_/_/_/ _/_/_/   Ron Vissers
>   _/    _/     _/       _/      IT Systems & Operations Team Lead
>  _/  _/_/     _/       _/       Quad/Tech International 
> _/    _/     _/       _/        ph:414-566-7643  fx:262-246-1545
>  _/_/  _/   _/     _/_/_/       Ron.Vissers at qtiworld.com
> _______________________________________________
> linux-lvm mailing list
> linux-lvm at sistina.com
> http://lists.sistina.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://www.sistina.com/lvm/Pages/howto.html

*** Software bugs are stupid.
    Nevertheless it needs not so stupid people to solve them ***

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

Heinz Mauelshagen                                 Sistina Software Inc.
Senior Consultant/Developer                       Am Sonnenhang 11
                                                  56242 Marienrachdorf
                                                  Germany
Mauelshagen at Sistina.com                           +49 2626 141200
                                                       FAX 924446
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-