Re: [linux-lvm] Volume group inconsistent

[Marcos Dutra <macdutra@gmail.com>]

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Thanks again Eric!

You're wright, I have 64 pv each one 500GB hdd. I have problems with my pv
starting by pv0 until pv23, I had seen after dd lvm doesn't recognize the
devices of these pvs, status "unknown device", others devices I don't have
the same problem. I cut this output from dd of hdisk plt-85 = pv64

Device with problem

-----

pv0 {
id = "N7lOu9-Ahjn-lf19-WVFW-xglN-yfL6-KOOw6O"
device = "unknown device"

status = ["ALLOCATABLE"]
flags = ["MISSING"]
dev_size = 1048576000
pe_start = 2048
pe_count = 127999
}

-----

Device without problem

-----

pv24 {
id = "D8aEQf-2CVS-oyVE-t40G-kOd7-eUe5-SkCe8V"
device = "/dev/mapper/mpathr"

status = ["ALLOCATABLE"]
flags = []
dev_size = 1048576000
pe_start = 2048
pe_count = 127999
}

-----


But the output from another hdisk plt-01 = pv0 I have different view.

-----

pv0 {
id = "N7lOu9-Ahjn-lf19-WVFW-xglN-yfL6-KOOw6O"
device = "/dev/mapper/plt-01"

status = ["ALLOCATABLE"]
flags = ["MISSING"]
dev_size = 1048576000
pe_start = 2048
pe_count = 127999
}

-----

I'm getting crazy lol...

Thank you

Marcos Dutra


2015-02-11 21:49 GMT-02:00 service hofman <service.hofman@googlemail.com>:

> ----
>                 pv64 {
>                         id = "TFSqaf-Wd6b-9w2r-8ZLp-rVN9-5851-0qNX0z"
>                         device = "/dev/mapper/plt-85"   # Hint only
>
>                         status = ["ALLOCATABLE"]
>                         flags = []
>                         dev_size = 1048576000   # 500 Gigabytes
>                         pe_start = 2048
>                         pe_count = 127999       # 499.996 Gigabytes
>                 }
>         }
>
> ----
>
> pvXX this is One for Team or for [hdd] /dev/sdX
> this look like you have 64hdd for 500Gb one.
>
> and first look MBR 0-2Mb
>
> dd if=/dev/sdX of=/boot/sdX.mbr bs=512 count=4000
>
> in side  sdX.mbr is lvm.vg
> if is this same [ platinum_after_missing.vg ]
>
> you found all record /etc/lvm/*
>
> rest is easy.
>
> device is inode, but not lv.
> [ -b "/dev/mapper/plt-01" ] && echo "True " || echo "False"
>
> -----
>
>         logical_volumes {
>
>                 volume-a2d55040-a597-419b-95b6-403f5b287773 {
>                         id = "GA9jj9-hooD-Au8T-23Bw-LNox-LkWF-G1TUG6"
>                         status = ["READ", "WRITE", "VISIBLE"]
>                         flags = []
>                         creation_host = "brasilia"
>                         creation_time = 1409946331      # 2014-09-05
> 16:45:31 -0300
>                         segment_count = 1
>
>
>
>                         segment1 {
>                                 start_extent = 0
>                                 extent_count = 1024     # 4 Gigabytes
>
>                                 type = "striped"
>                                 stripe_count = 1        # linear
>
>                                 stripes = [
>
>                                         "pv10", 30730
>                                 ]
>                         }
>                 }
>
> -----
> segment1 == lv like /dev/sdX1
>
> pv10==[hdd X],  offset[sdX1] == [  -->[xxx] ]
> but every one is start == 0[+offset]
> 30730*4096=[offset]
>
>
> by recovery us dd if=/dev/sdX1 bs=4096 count=(1024*1000) seek=($offset)
>
>
> this not LVM only IBM LLVM
> LINUX use LVM. kernel.org
> IBM use AIX kernel
>
>
>
> ComputerAlarmTechnologySystem©
>
> http://plus.google.com/105013137826111836446
> +44 77 04 24 74 00
>
> _______________________________________________
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> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>

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