Lost Disk, any way to recover data?
Hello all,
I just lost a disk in my lvm set, and was wondering if there is a way to recover the data from the first disk. I don't believe anything had been written to an LE's on the second disk. Is there a way to mount the first one and see if my data is still there? Or is this a lost cause and I should forget about it? Thanks
Jason
Hi. I think I had a similar problem myself a few days ago. Unfortunately there seemed to be noone willing to help me out so I tried various stuff myself. I'll try to help you with what worked for me.
I couldn't mount my LV with one drive missing from the VG and I think there are two ways to solve this. One is to put in an idential drive to the one you lost, use pvcreate on it and restore the VGDA to it using vgcfgrestore. I myself didn't have a spare drive but I had a small unused partition on some other drive which I used instead. I used pvcreate on that partition and then used vgcfgrestore with the -i option which ignored the size mismatch between my partition and the previous drive that was in.
I used:
vgcfgrestore - vg1 -i -o /dev/hdc1 -v /dev/hdd1
where hdc(1) was the old drive that died and hdd1 was the 'fake' partition. After that I ran vgscan and activated the VG. That allowed me to mount the LV and backup the data off it. I later had to recreate the VG and LV but at least I saved the remaining data.
I won't say that's the only or the best way to do it but that's all I've been able to figure out myself which worked and I guess it's the best suggestion you'll get around here.
Good luck.
---------
Perplexer
----- Original Message -----
From: "Jason P Holland" <[email protected]>
To: <[email protected]>
Sent: Friday, April 02, 2004 7:43 PM
Subject: [linux-lvm] Lost Disk, any way to recover data?
Quoted 16 lines
Hello all,
I just lost a disk in my lvm set, and was wondering if there is a way to recover the data from the first disk. I don't believe anything had been written to an LE's on the second disk. Is there a way to mount the first one and see if my data is still there? Or is this a lost cause and I should forget about it? Thanks
Jason
_______________________________________________
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[email protected]
https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
Thanks a lot! I'll give this a try and see what happens!
Jason
Quoted 63 lines · Perplexer
Hi. I think I had a similar problem myself a few days ago. Unfortunately there seemed to be noone willing to help me out so I tried various stuff myself. I'll try to help you with what worked for me.
I couldn't mount my LV with one drive missing from the VG and I think there are two ways to solve this. One is to put in an idential drive to the one you lost, use pvcreate on it and restore the VGDA to it using vgcfgrestore. I myself didn't have a spare drive but I had a small unused partition on some other drive which I used instead. I used pvcreate on that partition and then used vgcfgrestore with the -i option which ignored the size mismatch between my partition and the previous drive that was in.
I used:
vgcfgrestore - vg1 -i -o
/dev/hdc1-v/dev/hdd1where hdc(1) was the old drive that died and hdd1 was the 'fake' partition. After that I ran vgscan and activated the VG. That allowed me to mount the LV and backup the data off it. I later had to recreate the VG and LV but at least I saved the remaining data.
I won't say that's the only or the best way to do it but that's all I've been able to figure out myself which worked and I guess it's the best suggestion you'll get around here.
Good luck.
---------
Perplexer----- Original Message -----
From: "Jason P Holland" <[email protected]>
To: <[email protected]>
Sent: Friday, April 02, 2004 7:43 PM
Subject: [linux-lvm] Lost Disk, any way to recover data?Quoted 9 lines
Hello all,
I just lost a disk in my lvm set, and was wondering if there is a way to recover the data from the first disk. I don't believe anything had been written to an LE's on the second disk. Is there a way to mount the first one and see if my data is still there? Or is this a lost cause and I should forget about it? Thanks
Quoted 7 lines
Jason
_______________________________________________
linux-lvm mailing list
[email protected]
https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/_______________________________________________
linux-lvm mailing list
[email protected]
https://www.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/