[CentOS] "No free sectors available" while try to extend logical volumen in a virtual machine running CentOS 6.5

Tue Oct 28 05:38:20 UTC 2014
John R Pierce <pierce at hogranch.com>

what do you get from the commands:

     pvs -v
     vgs -v
     lvs

and, if pvs shows any /dev/mdXX devices, the output of mdadm --detail 
/dev/mdXX

?    example output...

# pvs -v
     Scanning for physical volume names
   PV         VG           Fmt  Attr PSize   PFree  DevSize PV UUID
   /dev/md127 vgdata       lvm2 a--    1.82t 19.68g   1.82t 
pPuDNs-AVQ8-92tw-TXcT-WWyD-nPhQ-dZqpx0
   /dev/sda2  vg_myhost    lvm2 a--  476.45g  5.36g 476.45g 
EWe4ws-1Z6S-v9d6-gvQ2-e7QE-K58b-Sd1W5z

# mdadm --detail /dev/md127
/dev/md127:
         Version : 1.2
   Creation Time : Sat Jun 14 13:18:25 2014
      Raid Level : raid1
      Array Size : 1953383232 (1862.89 GiB 2000.26 GB)
   Used Dev Size : 1953383232 (1862.89 GiB 2000.26 GB)
    Raid Devices : 2
   Total Devices : 2
     Persistence : Superblock is persistent

     Update Time : Mon Oct 27 22:35:55 2014
           State : clean
  Active Devices : 2
Working Devices : 2
  Failed Devices : 0
   Spare Devices : 0

            Name : myhost:0  (local to host myhost)
            UUID : d9c90fda:9a0e5d4f:d27cf1f6:19d0b43a
          Events : 441

     Number   Major   Minor   RaidDevice State
        0       8       17        0      active sync   /dev/sdb1
        1       8       33        1      active sync   /dev/sdc1


# vgs -v
     Finding all volume groups
     Finding volume group "vgdata"
     Finding volume group "vg_myhost"
   VG           Attr   Ext   #PV #LV #SN VSize   VFree  VG 
UUID                                VProfile
   vg_myhost    wz--n- 4.00m   1   6   0 476.45g  5.36g 
cX6DQy-iDY2-mL0Q-zM1m-pgf2-kLdE-8zWtIG
   vgdata       wz--n- 4.00m   1   1   0   1.82t 19.68g 
USqdKh-VIv7-TrCE-2RXn-52oG-7Qed-01URWg

# lvs
   LV       VG           Attr       LSize   Pool Origin Data%  Move Log 
Cpy%Sync Convert
   lv_home  vg_myhost    -wi-ao---- 29.30g
   lv_root  vg_myhost    -wi-ao---- 50.00g
   lv_swap  vg_myhost    -wi-ao---- 11.80g
   lvimages vg_myhost    -wi-ao---- 150.00g
   lvpgsql  vg_myhost    -wi-ao---- 30.00g
   lvtest   vg_myhost    -wi-a----- 200.00g
   lvhome2  vgdata       -wi-ao----   1.80t


-- 
john r pierce                                      37N 122W
somewhere on the middle of the left coast