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Urgent, Please help LVM-krash

linux-lvm Erik Bågfors 3 participants 3 messages Dec 13, 2001 – Dec 17, 2001

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Hi all!

Yesterday I krashed my lvm. This is the first time I'm having real problems with it.

This is what happened.

I was going to add a new lv and used the lvcreate-command as usual. This time I forgot the -n switch and when I realized that I hit ctrl-c.. BAD idea!

Now my vg is gone. I can't get it back whatever I try. Any help would be VERY appreciated.

A vgscan just sais "no volume groups found" or something like that. doing a pvdisplay on the pv's in my vg gives me that they should be in "diskvg" (which is correct). I've tried doing vgcfgrestore from the backups in /etc/lvmconf but that doesn't help. vgscan still doesn't find it.

I looked at the HOWTO and found a program named uuid_fixer that looked like it could solve the problem but it died with an "illegal instruction" regardless of if I used the precompiled version or compiled it myself.

This is on a mandrake 8.1-box with lvm, xfs, reiserfs and devfs so there are alot of things to think about.

When doing stuff I did the following first:
reboot into single user, remount / rw, mount /proc, restore some
standar-stuff into /dev, and start devfsd

After that I tried vgcfgrestore, vgscan, uuid_fixer and just about everything I could think or.

Please please please help me. Can anyone solve this. There are over 60 GB of stuff on this computer and it needs to work TODAY :(

/Erik

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Erik Bågfors               | http://www.ardendo.se/
[email protected]    | GSM +46 733 279 273
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#1 lore raw
Quoted 10 lines · Erik Bågfors

Hi all!

Yesterday I krashed my lvm. This is the first time I'm having real problems with it.

This is what happened.

I was going to add a new lv and used the lvcreate-command as usual. This time I forgot the -n switch and when I realized that I hit ctrl-c.. BAD idea!

Erik,

that's actually starneg, because the tools intercept ctrl-c and the like :-(

Quoted 9 lines

Now my vg is gone. I can't get it back whatever I try. Any help would be VERY appreciated.

A vgscan just sais "no volume groups found" or something like that. doing a pvdisplay on the pv's in my vg gives me that they should be in "diskvg" (which is correct). I've tried doing vgcfgrestore from the backups in /etc/lvmconf but that doesn't help. vgscan still doesn't find it.

Did you run "pvcreate -ff" on all of your PVs belonging to diskvg *before* you run vgcfgrestore on all of them? vgscan afetrwards.

Quoted 9 lines

I looked at the HOWTO and found a program named uuid_fixer that looked like it could solve the problem but it died with an "illegal instruction" regardless of if I used the precompiled version or compiled it myself.

This is on a mandrake 8.1-box with lvm, xfs, reiserfs and devfs so there are alot of things to think about.

Quoted 6 lines

When doing stuff I did the following first:
reboot into single user, remount / rw, mount /proc, restore some
standar-stuff into /dev, and start devfsd

After that I tried vgcfgrestore, vgscan, uuid_fixer and just about everything I could think or.

I think it was just the lack of pvcreate before vgcfgrestore.

Quoted 17 lines

Please please please help me. Can anyone solve this. There are over 60 GB of stuff on this computer and it needs to work TODAY :(

/Erik

Signature · 10 lines
Erik Bågfors               | http://www.ardendo.se/
[email protected]    | GSM +46 733 279 273
fingerprint: 6666 A85B 95D3 D26B 296B 6C60 4F32 2C0B 693D 6E32


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#2 lore raw

mån 2001-12-17 klockan 12.22 skrev Heinz J . Mauelshagen:

Quoted 8 lines · Erik Bågfors
Quoted 7 lines

Hi all!

Yesterday I krashed my lvm. This is the first time I'm having real problems with it.

This is what happened.

Quoted 7 lines
Quoted 3 lines

I was going to add a new lv and used the lvcreate-command as usual. This time I forgot the -n switch and when I realized that I hit ctrl-c.. BAD idea!

Erik,

that's actually starneg, because the tools intercept ctrl-c and the like :-(

Hmm.. well .. it did break the program for me.. Maybe it's an old version with mandrake 8.1??

I know that the kernel lvm-stuff is NOT the latest version. Is it ok to run an old version or do I risk damage to the system??

Quoted 11 lines
Quoted 8 lines

Now my vg is gone. I can't get it back whatever I try. Any help would be VERY appreciated.

A vgscan just sais "no volume groups found" or something like that. doing a pvdisplay on the pv's in my vg gives me that they should be in "diskvg" (which is correct). I've tried doing vgcfgrestore from the backups in /etc/lvmconf but that doesn't help. vgscan still doesn't find it.

Did you run "pvcreate -ff" on all of your PVs belonging to diskvg *before* you run vgcfgrestore on all of them? vgscan afetrwards.

At first I didn't, but I tried that later. Same thing.

Quoted 9 lines
Quoted 9 lines

I looked at the HOWTO and found a program named uuid_fixer that looked like it could solve the problem but it died with an "illegal instruction" regardless of if I used the precompiled version or compiled it myself.

This is on a mandrake 8.1-box with lvm, xfs, reiserfs and devfs so there are alot of things to think about.

Quoted 8 lines
Quoted 6 lines

When doing stuff I did the following first:
reboot into single user, remount / rw, mount /proc, restore some
standar-stuff into /dev, and start devfsd

After that I tried vgcfgrestore, vgscan, uuid_fixer and just about everything I could think or.

I think it was just the lack of pvcreate before vgcfgrestore.

Perhaps.

But I think there was another problem. I've had a few small problems with xfs under mandrake 8.1. Sometimes I've lost some files. I really don't know why but the data in them have been corrupted or they were 0 bytes in size. I have been really mean to the computer and killing the power on it while it was running and so on. But that was never a problem under reiserfs so I'm back with 100% reiserfs now. I think the files in /etc/lvmconf were strange.

Quoted 4 lines
Quoted 4 lines

Please please please help me. Can anyone solve this. There are over 60 GB of stuff on this computer and it needs to work TODAY :(

Like I said I needed that computer back the same day. I ended up reinstalling the box. Loosing the data I had on it. Luckily most data was either not important or could be restored from backup. The only thing I really lost was the system with all it's services and the like. So I guess I need to resetup samba/appleshare/web/nfs/dns and so on.

/Erik

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Erik Bågfors               | [email protected]
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