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



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