Hi All, I need to restore my lvm after destroying my boot disk during an upgrade. I have used the information on this http://www.howtoforge.com/recover_data_from_raid_lvm_partitions as a starting point and have got so far but got stuck. I do not have a raid just three disks linked into a volume group so I skipped the first part and started at the Recovering The LVM Setup section. I used the dd command (also piped the output into strings to clean it up) and created this config file Code: # Generated by LVM2 version 2.02.95(2) (2012-03-06): Mon Jun 4 17:01:30 2012 contents = "Text Format Volume Group" version = 1 description = "" creation_host = "(none)" # Linux (none) 3.3.4-5.fc17.x86_64 #1 SMP Mon May 7 17:29:34 UTC 2012 x86_64 creation_time = 1338829290 # Mon Jun 4 17:01:30 2012 vg_big { id = "OBZT6E-tzAO-v80A-kN38-R1Uo-3GRI-dXd4wj" seqno = 13 format = "lvm2" # informational status = ["RESIZEABLE", "READ", "WRITE"] flags = [] extent_size = 8192 max_lv = 256 max_pv = 256 metadata_copies = 0 physical_volumes { pv0 { id = "PCNHHY-LSvJ-jKbt-TXbN-tceZ-0GPe-tshRED" device = "/dev/sdb" status = ["ALLOCATABLE"] flags = [] dev_size = 3907029168 pe_start = 384 pe_count = 476932 } pv1 { id = "h8j1UC-Uckf-Ob3w-UTea-nUfT-JPWc-sVdjeF" device = "/dev/sdc" status = ["ALLOCATABLE"] flags = [] dev_size = 3907029168 pe_start = 384 pe_count = 476932 } pv2 { id = "Ixsun3-rGKx-0xWB-tqFK-RDYq-OuNR-qIj5sO" device = "/dev/sda" status = ["ALLOCATABLE"] flags = [] dev_size = 3907029168 pe_start = 2048 pe_count = 476932 } } logical_volumes { big { id = "ptLLIA-nQhQ-JsBQ-wur0-fejd-wV4E-Xj1PyR" status = ["READ", "WRITE", "VISIBLE"] flags = [] segment_count = 1 segment1 { start_extent = 0 extent_count = 953864 type = "striped" stripe_count = 1 stripe_size = 8 stripes = [ "pv0", 0, "pv2", 0 ] } } } } In the stripes part it lists only two pv's PV0 and PV2 is this correct? I tried vgconfigrestore with the -t for test and got Test mode: Metadata will NOT be updated and volumes will not be (de)activated. Couldn't find device with uuid PCNHHY-LSvJ-jKbt-TXbN-tceZ-0GPe-tshRED. Couldn't find device with uuid Ixsun3-rGKx-0xWB-tqFK-RDYq-OuNR-qIj5sO. Segment with extent 953864 in PV unknown device not found Couldn't read all logical volumes for volume group vg_big. Restore failed. I am guessing that I need to assign uuids to the disks to match the old config? Any ideas? Thanks I have attached the output from the dd command after it has been cleaned with strings
More info Just some more info about the problem lvmdiskscan /dev/sda [ 1.82 TiB] /dev/vg_main/lv_swap [ 13.72 GiB] /dev/vg_main/lv_root [ 50.00 GiB] /dev/vg_main/lv_home [ 84.81 GiB] /dev/sdb [ 1.82 TiB] /dev/sdc [ 1.82 TiB] LVM physical volume /dev/sdd1 [ 500.00 MiB] /dev/sdd2 [ 148.56 GiB] LVM physical volume 5 disks 1 partition 1 LVM physical volume whole disk 1 LVM physical volume [root@main uuid_fixer]# fdisk -l Disk /dev/sda: 2000.4 GB, 2000398934016 bytes 255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes 255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk /dev/sdc: 2000.4 GB, 2000398934016 bytes 255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x2c33c642 Device Boot Start End Blocks Id System Disk /dev/sdd: 160.0 GB, 160040803840 bytes 255 heads, 63 sectors/track, 19457 cylinders, total 312579695 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x000dd6fd Device Boot Start End Blocks Id System /dev/sdd1 * 2048 1026047 512000 83 Linux /dev/sdd2 1026048 312578047 155776000 8e Linux LVM Disk /dev/mapper/vg_main-lv_swap: 14.7 GB, 14730395648 bytes 255 heads, 63 sectors/track, 1790 cylinders, total 28770304 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk /dev/mapper/vg_main-lv_root: 53.7 GB, 53687091200 bytes 255 heads, 63 sectors/track, 6527 cylinders, total 104857600 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk /dev/mapper/vg_main-lv_home: 91.1 GB, 91066728448 bytes 255 heads, 63 sectors/track, 11071 cylinders, total 177864704 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes
