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From: Patrick Picard <ppicard@picardconsulting.ca>
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Subject: [linux-lvm] Dead PV....recovering data
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Date: Tue, 11 Jul 2006 04:59:19 -0000
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Good morning everyone.

I was away on vacation and when i got back, I booted my server up. 
Unfortunately, one of the HD's didn't come back.

The hard drive was a WD4000YR 400GB.

PV /dev/hdb  --> Hitachi 400GB
PV /dev/sdd --> WD4000YR 400GB (the dead one)

Both PV's were part of my Video Volume group.

Now that my WD hard drive is dead(not seen by bios at all :() the 
videovg wont load.
Is it possible to recover the data on the remaining PV?

To my understanding, the data is stripped across the PV's in the volume 
group.....

Right now im loosing around 570GB of videos :(

Thanks for any help

Patrick

To help outline my configuration see below. PV1 is the missing drive:
[root@fc4 backup]# cat /etc/lvm/backup/videovg
# Generated by LVM2: Tue Jan 31 18:55:29 2006

contents = "Text Format Volume Group"
version = 1

description = "Created *after* executing 'lvextend -l +95388 
/dev/videovg/movieslv'"

creation_host = "fc4.patpic.com"        # Linux fc4.patpic.com 
2.6.14-1.1656_FC4smp #1 SMP Thu Jan 5 22:24:06 EST 2006 i686
creation_time = 1138751729      # Tue Jan 31 18:55:29 2006

videovg {
        id = "mqumMs-fVhb-mOhv-KgEj-ZJqW-pWhD-3RDbQR"
        seqno = 4
        status = ["RESIZEABLE", "READ", "WRITE"]
        extent_size = 8192              # 4 Megabytes
        max_lv = 0
        max_pv = 0

        physical_volumes {

                pv0 {
                        id = "bHJ1PS-yEg4-QlD0-D62k-nhyy-2TVe-b84gL0"
                        device = "/dev/hdb"     # Hint only

                        status = ["ALLOCATABLE"]
                        pe_start = 384
                        pe_count = 95388        # 372.609 Gigabytes
                }

                pv1 {
                        id = "rH7yLu-aAoG-Gcc7-C2ZM-r2jP-lU1L-Cg8IsY"   
// this is the bad drive
                        device = "/dev/sdc"     # Hint only

                        status = ["ALLOCATABLE"]
                        pe_start = 384
                        pe_count = 95388        # 372.609 Gigabytes
                }
        }

        logical_volumes {

                movieslv {
                        id = "ijlCES-kuxY-YHnA-FlDo-cm7a-yYlO-cXHmga"
                        status = ["READ", "WRITE", "VISIBLE"]
                        segment_count = 2

                        segment1 {
                                start_extent = 0
                                extent_count = 95388    # 372.609 Gigabytes

                                type = "striped"
                                stripe_count = 1        # linear

                                stripes = [
                                        "pv0", 0
                                ]
                        }
                        segment2 {
                                start_extent = 95388
                                extent_count = 95388    # 372.609 Gigabytes

                                type = "striped"
                                stripe_count = 1        # linear

                                stripes = [
                                        "pv1", 0
                                ]
                        }
                }
        }
}