From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <001501c16305$0e2ab230$0a5c010a@ultra> From: "Klaus Pedersen" References: <002e01c161d6$7fa8a960$0a5c010a@ultra> <20011030235208.F800@lynx.no> <005801c161dc$1bbd6160$0a5c010a@ultra> Subject: Re: [linux-lvm] Re: After power outtage my vg is gone MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-lvm-admin@sistina.com Errors-To: linux-lvm-admin@sistina.com Reply-To: linux-lvm@sistina.com List-Help: List-Post: List-Subscribe: , List-Unsubscribe: , List-Archive: Date: Thu Nov 1 12:41:02 2001 List-Id: Content-Type: text/plain; charset="us-ascii" To: linux-lvm@sistina.com Hi again I finally got my problem solved, so I write this message to tell others how I solved it, so it's in the mail archives - and also because I want to point out that this should be in the HOW-TO, since my problem is probably not so uncommonm and very easy to solve - IF you know how. Basically my problem is that after a power outtage I was unable to mount my vgs - I got this message : Vault:/home/ultra# mount /glftpd/site mount: /dev/site_vg/lvol1 is not a valid block device I found out that the problem is that the file /etc/lvmtab and the directory /etc/lvmtab.d is gone for some reason. Basically I solved this with a big help from Andreas to dropped me a short message to use vgcfgrestore, so I did. In the how-to I find it very vagely documented exactly what this tool does, and when it's being used. Also, I was unable to read in the how-to that after this is the sequence of commands that should be used : vgcfgrestore -n site_vg /dev/hda8 vgcfgrestore -n site_vg /dev/hdb1 (my vg consists of those two partitions) vgscan -a y (to activate the vg) and then do the actual mounting : mount /glftpd/site Yes, I know that to some very experienced LVM developer and such, this is VERY simple - but to a guy like me who really doesn't know much about LVM, it was very advanced and hard to find out. So please - put an advanced troubleshooting guide in the LVM how-to on sistina.com - I find it very hard to believe that I am the only one who could use it. /Klaus ----- Original Message ----- From: "Klaus Pedersen" To: Sent: Wednesday, October 31, 2001 8:17 AM Subject: Re: [linux-lvm] Re: After power outtage my vg is gone > I think that gave a little breakthrough :-) > First of all - as murphys law suggests, I don't have a backup to use with > vgcfgrestore - but with the tool I did manage to recreate both /etc/lvmtab > and /etc/lvmtab.d : > > Vault:/home/ultra# vgcfgrestore -n site_vg /dev/hda8 > vgcfgrestore -- VGDA for "site_vg" successfully restored to physical volume > "/dev/hda8" > > Vault:/home/ultra# vgcfgrestore -n site_vg /dev/hdb1 > vgcfgrestore -- VGDA for "site_vg" successfully restored to physical volume > "/dev/hdb1" > > the only problem is that they are both really empty, so with vgscan I find > nothing : > > Vault:/etc# vgscan > vgscan -- reading all physical volumes (this may take a while...) > vgscan -- no volume groups found > > But to my big relief, the data is still present on the physical drives : > > Vault:/etc# pvdisplay /dev/hda8 > --- Physical volume --- > PV Name /dev/hda8 > VG Name site_vg > PV Size 14.1 GB / NOT usable 1.21 MB [LVM: 135 KB] > PV# 2 > PV Status available > Allocatable yes > Cur LV 1 > PE Size (KByte) 4096 > Total PE 3610 > Free PE 108 > Allocated PE 3502 > PV UUID W9tkR7-eq02-6WBM-CBrU-Cdeb-I32v-RyFuLn > > > Vault:/etc# pvdisplay /dev/hdb1 > --- Physical volume --- > PV Name /dev/hdb1 > VG Name site_vg > PV Size 57.25 GB / NOT usable 3.96 MB [LVM: 178 KB] > PV# 1 > PV Status NOT available > Allocatable yes (but full) > Cur LV 1 > PE Size (KByte) 4096 > Total PE 14654 > Free PE 0 > Allocated PE 14654 > PV UUID u5vBzC-Hwu5-mjAt-5yN0-lS4E-crto-1jI9NZ > > > Thanks for the help so far Andreas, but where do I go from here ? > > Thanks in advance > > Klaus Pedersen >