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[linux隞也 LVM 摮

[銴鋆賡包
頝唾唳摰璅撅
璅銝
潸” 2016-1-20 16:52:08 | 憿舐內券冽撅 撣 |摨閬 |梯璅∪
: http://linux.vbird.org/linux_basic/0420quota.php#lvm
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[敶扳曉之LV摰寥]6 ^6 g) |3 I% _/ q

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1) lvextend -l 178813 /dev/11HD_vg/11HD_lv
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( N8 ~) S8 I( N; A) n% F178813舀炬憭抒size,憒2.7T=178813 PE, 1 PE=16MB
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2)lvresize -l 1966943 /dev/11HD_vg/11HD_lv. P5 e+ `. w  N/ x6 \% ]4 ^# o

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  x" H/ E9 C% g, Z( l" b1966943臬憭批蝮編ize,憒30T=1966943 PE , 臭誑 vgdisplay 11HD_vg 亦桀 vg 閰喟敦鞈,咨otal size and free size ,桐賣 PE
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3)resize2fs /dev/11HD_vg/11HD_lv
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3 m5 L% _# ^/ y% [( V% K+ [! d, WP.S憒曆迷disk隞,雿輻 yum install gdisk 摰鋆
! f; s. E. |; Y9 D5 b  S7 a雿輻 gdisk 脩,

8 f4 E% Z5 o% OHex code or GUID (L to show codes, Enter = 8300):  頛詨8e00  ===> LVM (logical volumn manager)- ^( j* P  J6 y  [* G
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5 z3 j% o, X- D7 `- S6 S[蝘駁小v]
4 S. @4 b( B+ [+ l! G9 C2 |" Spvscan or pvdisplay 瘥蝖祉憿舐內:
, R; @) E1 @1 \Couldn't find device with uuid WWeM0m-MLX2-o0da-tf7q-fJJu-eiGl-e7UmM3
" q* q* R: ^6 I/ J/ q5 H+ v4 L2 CPV Name               unknown device
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望潛′蝣瘥,蝝汲G,甇日蝘駁 PV:
, c( R. g/ F, [- c7 \- q3 k2 kvgreduce --removemissing --force 11HD_vg  #雿銋 LV芷,撱 LV
- O* z* X+ k0 ^pvscan or pvdisplay 撠曹憿舐內 "unknown device"
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[憒雿mount 撌脣冽潔憿蝖祉找LVMpartition]' a; J) `- C% \! A+ w- o  n
#pvscan. h7 r, g1 U. f! K/ ~
  PV /dev/sdc2   VG vg_centos6   lvm2 [27.46 GiB / 0    free]      <===== 曆犖唾mount LVM (撌脣冽澆仿蝖祉)+ f7 A" p; f; A/ u
  PV /dev/sdb2   VG vg_test      lvm2 [18.92 GiB / 0    free]4 ?9 {% g5 @# I0 I. e, t4 m
  Total: 2 [46.39 GiB] / in use: 2 [46.39 GiB] / in no VG: 0 [0   ]
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- T! }- [; t1 R, H#vgscan
) }+ W+ Z/ ], p  t8 c  Reading all physical volumes.  This may take a while...9 g6 G' j/ P; h, i
  Found volume group "vg_centos6" using metadata type lvm2' p$ r# ]! Q) p5 ^9 ?
  Found volume group "vg_test" using metadata type lvm2
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#lvscan
4 _" s% b  V2 l& }6 F" [( m/ }  inactive            '/dev/vg_centos6/lv_root' [21.84 GiB] inherit    <====芸
  P! w0 j! y) C5 Q& d) N. g* G# }  inactive            '/dev/vg_centos6/lv_swap' [5.62 GiB] inherit    <====芸% g6 P/ V; u/ Y: G$ s& B
  ACTIVE            '/dev/vg_test/lv_root' [16.98 GiB] inherit
) |) o% T4 q& ~  ACTIVE            '/dev/vg_test/lv_swap' [1.94 GiB] inherit: L* ?! ?7 `- ~9 M9 L( s
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#lvdisplay /dev/vg_centos6/lv_root
9 ]& U8 v& d6 A. _  --- Logical volume ---
" Q, L0 ~- s. ]- N  LV Path                /dev/vg_centos6/lv_root
' d7 U# E2 m, J  LV Name                lv_root
  q( R% J- [4 d4 G0 y3 u, ]  VG Name                vg_centos6& {  R$ Q+ }$ i7 [5 w; u- R8 l
  LV UUID                0nFiiu-yDQG-1JUB-JI2r-uoTe-Hupi-WGisCe
/ P5 j$ Z) e  J$ U' t& @  LV Write Access        read/write& J9 d/ C  k6 l/ D  ~
  LV Creation host, time ,
7 O  M& `0 ?# L' r" B4 A  LV Status              unavailable      <==== 銝舐# {4 O- w5 p9 i' Q' l
  # open                 1
: u4 q/ U3 O+ n8 c& y  LV Size                21.84 GiB
# V0 \$ k8 l. y/ s7 L$ q  Current LE             5591
" L! b& n' T5 L  Segments               1+ V- w3 _( P( Y% W
  Allocation             inherit
5 _! G8 M: m' {5 s7 v& }( s  Read ahead sectors     auto
7 a, j3 }! c4 z  y% ]# H  - currently set to     256
! S* }4 e: Z$ N2 o5 |2 @  _  Block device           253:2' [$ g1 q* m( V5 q
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暺券鋆:
% u  m0 G7 d0 Z" J! t/ cvgchange -ay vg_centos6     <====== VG     (憒 VG ==> vgchange -an vg_centos6)
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#lvscan6 q. S" x  ]; o5 R$ L% T
  ACTIVE            '/dev/vg_centos6/lv_root' [21.84 GiB] inherit  <====撌脣鈭8 Y+ _" Q0 g# k7 M' J' g4 K
  ACTIVE            '/dev/vg_centos6/lv_swap' [5.62 GiB] inherit  <====撌脣鈭
8 U" E! @8 y9 H6 U, X  ACTIVE            '/dev/vg_test/lv_root' [16.98 GiB] inherit; b: P( s( O/ r2 a! t3 k
  ACTIVE            '/dev/vg_test/lv_swap' [1.94 GiB] inherit
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mount LVM:6 `; }; b  @3 f: r5 \
mkdir /mnt/lvmdisk
& V0 d" Y; {$ r* m4 t3 Zmount /dev/vg_centos6/lv_root  /mnt/lvmdisk, R! \6 T. |- k# _5 @* }
憭批!
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