Какой смысл создавать отдельный meta раздел для lvm кэширования?

$ sudo lvs
  LV                 VG    Attr       LSize   Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  airbase-export     balvg -wi-ao---- 200,00g
  airbase-files      balvg -wi-ao---- 250,00g
  airbase-logs       balvg -wi-ao----  40,00g
  airbase-mysql      balvg -wi-a----- 100,00g
  airbase-old-backup balvg -wi-a----- 400,00g
  airbase-root-ext4  balvg -wi-a-----  30,00g
  airbase-sites      balvg -wi-ao---- 100,00g
  airbase2           balvg -wi-a-----  50,00g
  astro              balvg -wi-ao---- 150,00g
  aviaport           balvg -wi-ao----  77,00g
  backup3            balvg -wi-ao---- 310,00g
  data               balvg -wi-ao----  70,00g
  documents          balvg -wi-ao----  80,00g
  downloads2         balvg -wi-ao---- 400,00g
  family             balvg -wi-ao---- 170,00g
  family_our         balvg -wi-ao---- 700,00g
  files              balvg -wi-ao---- 200,00g
  fs-test            balvg -wi-a-----  25,00g
  gentoo64-home      balvg -wi-ao---- 100,00g
  gentoo64-root      balvg -wi-ao----  10,01g
  gentoo64-usr       balvg -wi-ao----  30,00g
  gentoo64-var       balvg -wi-ao----  30,01g
  gentoo64-var-lib   balvg -wi-ao----  90,02g
  gentoo64-var-www   balvg -wi-ao----  30,00g
  lxc                balvg -wi-a-----  50,00g
  lxc-airbase-caches balvg -wi-ao---- 100,00g
  lxc-airbase-dev    balvg -wi-a-----  10,00g
  lxc-balabot        balvg -wi-a-----  10,00g
  lxc-common         balvg -wi-a-----  20,00g
  lxc-dispatcher     balvg -wi-a-----   5,00g
  lxc-family         balvg -wi-a-----   5,00g
  lxc-hosting        balvg -wi-ao----  20,00g
  music2             balvg -wi-ao---- 109,60g
  owncloud           balvg -wi-ao---- 100,00g
  portage            balvg -wi-ao----  30,00g
  small_files        balvg -wi-ao---- 130,00g
  swap               balvg -wi-ao----   8,00g
  video3             balvg -wi-ao----   2,00t
  works              balvg -wi-ao----  20,00g

$ sudo lvs
  LV                  VG      Attr      LSize   Pool Origin Data%  Move Log             Copy%  Convert
  airbase-backup      babakvg -wi-ao--- 150,00g
  aviaport-backup     babakvg -wi-ao---  40,00g
  backup              babakvg -wi-ao--p 690,00g
  data                babakvg -wi-a---p 400,00g
  data2               babakvg -wi-a---- 100,00g
  home2               babakvg -wi-a---p  50,00g
  isos                babakvg -wi-a---p  10,00g
  lxc                 babakvg -wi-a---p  70,00g
  lxc-our             babakvg -wi-a---p  20,00g
  lxc-tanzpol         babakvg -wi-a---p  50,00g
  lxc-works           babakvg -wi-a---p  20,00g
  maria-data          babakvg mwi-a-m-p 100,00g                         maria-data_mlog 100,00
  old-backup          babakvg -wi-a---p 500,00g
  repositories        babakvg -wi-a---p 100,00g
  swap                babakvg -wi-a---p  16,00g
  system              babakvg -wi-a---p  40,00g
  ubuntu              babakvg -wi-ao---  50,00g
  ubuntu-home         babakvg -wi-a---p  10,00g
  ubuntu-root         babakvg -wi-a---p  10,00g
  ubuntu-var          babakvg -wi-a---p   5,00g
  usr                 babakvg -wi-a---p  10,00g
  usr_ext4            babakvg -wi-a---p  20,00g
  var                 babakvg -wi-a---p  28,00g
  var-14              babakvg -wi-ao---  30,00g
  var-cache-webstatic babakvg -wi-a---p  30,00g
  var-lib             babakvg -wi-a---p  30,00g
  var-log-14          babakvg -wi-ao---  30,00g
  var-www             babakvg -wi-a---p  10,00g

  LV   VG     Attr       LSize   Pool    Origin       Data%  Meta%  Move Log Cpy%Sync Convert
  data cached Cwi-a-C--- 174,97g [cache] [data_corig] 74,14  15,48           24,60 

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