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Hi, Problem is that I don't - the card will only refer to it in 2gb - but it could be actually 2tb as in 2 x 1024 x 1024 x 1024 x1024 bytes. I can extract this: ̸¶ÿ LVM2 x[5A%r0N*> ð I ¬Zí¾ 2terabytes { id = "ApBoL0-71Q4-e0yC-JyTI-cORC-8Yd1-Wgsf3M" seqno = 1 status = ["RESIZEABLE", "READ", "WRITE"] extent_size = 8192 max_lv = 256 max_pv = 256 physical_volumes { pv0 { id = "QADZl1-asMf-PyLf-EIw1-qLkv-ZbFI-2goQUD" device = "/dev/sdb1" status = ["ALLOCATABLE"] pe_start = 384 pe_count = 524286 } } } # Generated by LVM2: Mon Apr 30 18:54:48 2007 contents = "Text Format Volume Group" version = 1 description = "" creation_host = "r" # Linux r 2.6.18-4-686 #1 SMP Mon Mar 26 17:17:36 UTC 2007 i686 creation_time = 1177955688 # Mon Apr 30 18:54:48 2007 2terabytes { id = "ApBoL0-71Q4-e0yC-JyTI-cORC-8Yd1-Wgsf3M" seqno = 2 status = ["RESIZEABLE", "READ", "WRITE"] extent_size = 8192 max_lv = 256 max_pv = 256 physical_volumes { pv0 { id = "QADZl1-asMf-PyLf-EIw1-qLkv-ZbFI-2goQUD" device = "/dev/sdb1" status = ["ALLOCATABLE"] pe_start = 384 pe_count = 524286 } pv1 { id = "lT0VrQ-uAur-IlZB-htso-Ezqf-nq95-YykdbX" device = "/dev/sdc1" status = ["ALLOCATABLE"] pe_start = 384 pe_count = 12225 } } } # Generated by LVM2: Mon Apr 30 18:55:06 2007 contents = "Text Format Volume Group" version = 1 description = "" creation_host = "r" # Linux r 2.6.18-4-686 #1 SMP Mon Mar 26 17:17:36 UTC 2007 i686 creation_time = 1177955706 # Mon Apr 30 18:55:06 2007 2terabytes { id = "ApBoL0-71Q4-e0yC-JyTI-cORC-8Yd1-Wgsf3M" seqno = 3 status = ["RESIZEABLE", "READ", "WRITE"] extent_size = 8192 max_lv = 256 max_pv = 256 physical_volumes { pv0 { id = "QADZl1-asMf-PyLf-EIw1-qLkv-ZbFI-2goQUD" device = "/dev/sdb1" status = ["ALLOCATABLE"] pe_start = 384 pe_count = 524286 } pv1 { id = "lT0VrQ-uAur-IlZB-htso-Ezqf-nq95-YykdbX" device = "/dev/sdc1" status = ["ALLOCATABLE"] pe_start = 384 pe_count = 12225 } } logical_volumes { 2TBData { id = "Kki2Ar-91IF-IueI-GN62-jD6o-Yl0V-hq5Y3A" status = ["READ", "WRITE", "VISIBLE"] segment_count = 2 segment1 { start_extent = 0 extent_count = 524286 type = "striped" stripe_count = 1 # linear stripes = [ "pv0", 0 ] } segment2 { start_extent = 524286 extent_count = 12225 type = "striped" stripe_count = 1 # linear stripes = [ "pv1", 0 ] } } } } # Generated by LVM2: Mon Apr 30 18:57:56 2007 contents = "Text Format Volume Group" version = 1 description = "" creation_host = "r" # Linux r2.6.18-4-686 #1 SMP Mon Mar 26 17:17:36 UTC 2007 i686 creation_time = 1177955876 # Mon Apr 30 18:57:56 2007 What should i expect to find on the second PV? (50gb) - there is only 800gb in the total volume - so I wouldn't expect to find any data on it, but should there be any "header information" at the start of the drive? When i seek to the 2tb byte in the virtual image file - its blank - no evidence of any data - is this normal? Robin > Date: Sun, 5 Oct 2008 21:58:11 +0200 > From: marki@marki-online.net > To: linux-lvm@redhat.com > Subject: Re: [linux-lvm] Help with LVM reconstruction > > Hi Robin, > > Sunday, October 5, 2008, 21:09:56, Robin Thompson wrote: > > > In short the data is intact, and I have found a program called RAID > > Reconstructor that will produce an image file of the RAID 5 arrays. > > This will be hopefully 2.05tb file. > > > > I've read that I can use losetup and vgscan to create LVM from 2 > > image files. But i'm unsure of how to proceed with when i have only > > one file which is combination of both. > > > > Anyone out there any advice or help? > > I have used losetup few times when doing tests with LVM. Your problem > is that you have 2 PVs in 1 file (if I understand it correctly). If > you know the exact size in bytes of the 2tb PV, then you can use dd to > skip those 2tb and copy only the last 50gb into different file. Then > truncate the original to 2tb (or copy first 2tb). > Then you should have 2 files with your 2 PVs. But think of (or test) > any headers that could be in the begining of those files (for example > partition table and only inside partition there is PV). > But generally, it should be possible to use those files as PVs. > > -- > bYE, Marki > > > _______________________________________________ > linux-lvm mailing list > linux-lvm@redhat.com > https://www.redhat.com/mailman/listinfo/linux-lvm > read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/ Win £3000 to spend on whatever you want at Uni! Click here to WIN! Try Facebook in Windows Live Messenger! Try it Now! |
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