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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 | 芰閰脖 撣 |摨閬 |梯璅∪
: http://linux.vbird.org/linux_basic/0420quota.php#lvm9 G! k9 R8 s# Y: s( N/ h& Q6 ?
         http://linux.vbird.org/linux_basic/0230filesystem.php#gdisk6 J, Y8 e8 |. w" T

/ e  j5 y& z6 ], L$ m  X[敶扳曉之LV摰寥]# T' B& d1 e" u( m& Z4 v0 h7 \4 X

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1) lvextend -l 178813 /dev/11HD_vg/11HD_lv
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178813舀炬憭抒size,憒2.7T=178813 PE, 1 PE=16MB8 {' |" e, C4 f* M: p* c  [8 ?. E
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3 [: w, ?0 a: H4 S: C5 \: z' C2)lvresize -l 1966943 /dev/11HD_vg/11HD_lv
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1966943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% Y$ F4 A9 D0 `# n
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- u0 H; s$ B5 v3)resize2fs /dev/11HD_vg/11HD_lv
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P.S憒曆迷disk隞,雿輻 yum install gdisk 摰鋆& Z& ?8 S' P- G4 f& q
雿輻 gdisk 脩,

+ C1 E# ]0 W5 i% }Hex code or GUID (L to show codes, Enter = 8300):  頛詨8e00  ===> LVM (logical volumn manager)
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[蝘駁小v]% x" S' f) B+ B1 y% |% N
pvscan or pvdisplay 瘥蝖祉憿舐內:% Y! j, k$ ~0 N' a. p  O
Couldn't find device with uuid WWeM0m-MLX2-o0da-tf7q-fJJu-eiGl-e7UmM3
* l5 H9 C8 n! i, q5 a4 ^PV Name               unknown device
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! d1 D7 Y: H& Z# r4 ?望潛′蝣瘥,蝝汲G,甇日蝘駁 PV:9 M# t+ p( ~) h8 r6 K7 O
vgreduce --removemissing --force 11HD_vg  #雿銋 LV芷,撱 LV$ P3 N% n% j- S' ~, M* E
pvscan or pvdisplay 撠曹憿舐內 "unknown device"
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" W  l# @3 T8 y; P9 v[憒雿mount 撌脣冽潔憿蝖祉找LVMpartition]) K' v: b8 ~- o  N! \" I
#pvscan
+ x8 _/ u' N; K* N4 Q( J. j, h  PV /dev/sdc2   VG vg_centos6   lvm2 [27.46 GiB / 0    free]      <===== 曆犖唾mount LVM (撌脣冽澆仿蝖祉)8 ^, Z: t) q5 @3 G- k( j% {+ E
  PV /dev/sdb2   VG vg_test      lvm2 [18.92 GiB / 0    free]
) S3 Y% T4 |( D0 C, t! m5 ^* W  Total: 2 [46.39 GiB] / in use: 2 [46.39 GiB] / in no VG: 0 [0   ]
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#vgscan/ i" c6 k. O# O# j5 u; }
  Reading all physical volumes.  This may take a while...
& `6 E, J# Y% v3 K, ?( X6 i  Found volume group "vg_centos6" using metadata type lvm2
* v. C9 N- r; n7 z* |! M: ]  Found volume group "vg_test" using metadata type lvm2
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#lvscan0 P' s1 b7 K6 g; i
  inactive            '/dev/vg_centos6/lv_root' [21.84 GiB] inherit    <====芸8 v+ y7 d3 T% s# `  B
  inactive            '/dev/vg_centos6/lv_swap' [5.62 GiB] inherit    <====芸/ q( R4 P" S0 d' s
  ACTIVE            '/dev/vg_test/lv_root' [16.98 GiB] inherit# H# L3 X$ F( L- z3 m  M3 U
  ACTIVE            '/dev/vg_test/lv_swap' [1.94 GiB] inherit, p1 K# y+ y# b# @
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#lvdisplay /dev/vg_centos6/lv_root
2 {0 u! ^( i, p% ~9 T) y  --- Logical volume ---% O- ^% E) Y; N
  LV Path                /dev/vg_centos6/lv_root
0 N+ r& I% d7 x$ E8 S/ X% n  LV Name                lv_root
- ^, S- n3 \/ c! S) e3 z# H$ o7 z  VG Name                vg_centos6
2 U& r2 ?" h8 h3 ~+ d2 ?/ V' f5 W# \& W  LV UUID                0nFiiu-yDQG-1JUB-JI2r-uoTe-Hupi-WGisCe0 v2 T; `: N% j+ O
  LV Write Access        read/write, }6 x# w! I- u, F6 }
  LV Creation host, time ,  I9 n$ }2 T& P" G2 t, o% ^
  LV Status              unavailable      <==== 銝舐, I5 n% l* q2 S) M) }2 g' G% l
  # open                 1$ B+ ]# c7 j: V5 M+ E! i) e; d) P
  LV Size                21.84 GiB
/ r" i/ x7 Z3 R- D7 }  Current LE             5591: [2 I2 t! V* X* ^2 H& [
  Segments               1
- p4 E/ f  f0 a4 A3 a/ }$ I  Allocation             inherit
/ r3 |* v9 t5 G( I2 F  Read ahead sectors     auto
  i4 r8 H: p6 k; ~) h( O  - currently set to     256  ?3 g1 T' ~( S- x( x) [
  Block device           253:24 K! p- k% g( r! w% y4 i) m4 S
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; z7 }. B0 C. N+ j2 Y暺券鋆:
* c: X' e  R! Y! ]  Y1 h/ \/ i+ Kvgchange -ay vg_centos6     <====== VG     (憒 VG ==> vgchange -an vg_centos6); |9 n+ V5 k, g: y
乩甈 LV:6 I6 {9 K7 P5 G; v, }2 K# g
#lvscan8 N( G2 _' P5 G% ~
  ACTIVE            '/dev/vg_centos6/lv_root' [21.84 GiB] inherit  <====撌脣鈭
0 G" Z: G5 r' X5 l  ACTIVE            '/dev/vg_centos6/lv_swap' [5.62 GiB] inherit  <====撌脣鈭
) h% p/ @* c7 @* ]: B$ t  ACTIVE            '/dev/vg_test/lv_root' [16.98 GiB] inherit7 Z9 P3 v$ D/ l; A
  ACTIVE            '/dev/vg_test/lv_swap' [1.94 GiB] inherit; U! p6 f+ I. i: ]% u  k

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mount LVM:
5 @4 A/ }7 R% Y+ Tmkdir /mnt/lvmdisk
/ \! t  W- U# L) `2 W, Umount /dev/vg_centos6/lv_root  /mnt/lvmdisk( E8 \( x5 f( D* B! O/ t
憭批!
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