tid=27827&參考 : http://linux.vbird.org/linux_basic/0420quota.php#lvm) Z# S3 C0 k/ d- h' m C0 H
http://linux.vbird.org/linux_basic/0230filesystem.php#gdisk6 q7 k' K: g2 q& {% D# T9 `
+ h7 ~& z0 k0 Y* S0 j. \[彈性放大LV容量]
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1) lvextend -l 178813 /dev/11HD_vg/11HD_lv
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7 D( S' F" P# B9 K. a! ?178813是欲加大的size,如2.7T=178813 PE, 1 PE=16MB/ i6 s6 ?: \/ G1 ^: v- c
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( P6 a0 u! n. R7 I7 m% D1 r' d1 {2)lvresize -l 1966943 /dev/11HD_vg/11HD_lv7 T8 {+ ]; q- e7 @3 K' J# E
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" q& u' ]& M! j. e1966943是加大後的總size,如30T=1966943 PE , 可以用 vgdisplay 11HD_vg 查目前的 vg 詳細資料,包含total size and free size ,單位都是 PE/ G' l* h" K- V" A; B
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q0 O4 [# y3 G5 x6 f2 Y" v1 l% u3)resize2fs /dev/11HD_vg/11HD_lv7 w' Q+ [$ b P' k" C) [, a1 _5 u1 b4 H
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P.S假如找不到gdisk指令,使用 yum install gdisk 安裝
: O) t% C( z5 c7 @使用 gdisk 分割磁區時, ; a! S( w/ K6 t
Hex code or GUID (L to show codes, Enter = 8300): 輸入8e00 ===> LVM (logical volumn manager). T% x: E7 |9 f ^ S& g# o
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[移除pv]
" [: ^: f k1 ]7 p6 Upvscan or pvdisplay 毀損的硬碟會顯示:
. p9 ~6 Y4 e' y# v" d3 E: JCouldn't find device with uuid WWeM0m-MLX2-o0da-tf7q-fJJu-eiGl-e7UmM32 t/ Y3 L2 p" Z
PV Name unknown device
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& _ W/ Y5 ^5 h, C2 @ J由於硬碟毀損,紀錄還留在VG內,因此需移除 PV:/ | W7 i, d1 b+ t
vgreduce --removemissing --force 11HD_vg #但也會把所有 LV刪除,故須重建 LV
, b+ J, b3 F1 D( S4 G9 _pvscan or pvdisplay 就不會顯示 "unknown device"
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[如何mount 已存在於一顆硬碟內之LVM的partition]3 ~, h9 e6 ^4 e( ~
#pvscan- z# D+ n& }* a5 R3 w
PV /dev/sdc2 VG vg_centos6 lvm2 [27.46 GiB / 0 free] <===== 吾人想要mount 的LVM (已存在於別顆硬碟)" T- ]0 j! p% }9 k6 F
PV /dev/sdb2 VG vg_test lvm2 [18.92 GiB / 0 free]
2 c h8 M, g7 {+ n, @2 v Total: 2 [46.39 GiB] / in use: 2 [46.39 GiB] / in no VG: 0 [0 ]
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! v+ ?) O* n/ M4 `) S/ T' b, W#vgscan
- ]( r- i6 S7 f* n! M Reading all physical volumes. This may take a while...9 p+ w4 z; _% N3 |
Found volume group "vg_centos6" using metadata type lvm2) j/ O2 ^ `- }! h3 G
Found volume group "vg_test" using metadata type lvm2" s3 w9 Q6 o# F9 R
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2 ?- E# r" K3 b7 L5 ]6 U# O#lvscan8 b4 g9 {+ z. m- o
inactive '/dev/vg_centos6/lv_root' [21.84 GiB] inherit <====未啟用
3 C4 @0 E% y& h0 {; T inactive '/dev/vg_centos6/lv_swap' [5.62 GiB] inherit <====未啟用 p1 H3 w/ L9 N* o4 o+ O$ z# @
ACTIVE '/dev/vg_test/lv_root' [16.98 GiB] inherit9 T9 F5 ]' e$ q" e
ACTIVE '/dev/vg_test/lv_swap' [1.94 GiB] inherit9 ~0 i S5 F9 S( U- i$ e: @
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) X1 U6 j8 O5 h! t# u7 y#lvdisplay /dev/vg_centos6/lv_root/ x* A* l# r# y
--- Logical volume ---
8 q: Z3 ^4 J# n$ n5 O$ B6 O LV Path /dev/vg_centos6/lv_root+ v8 Y0 x; A `
LV Name lv_root
- s( |! d T& {5 z. U: F VG Name vg_centos63 U* i6 K( f$ E. d7 z, S/ J
LV UUID 0nFiiu-yDQG-1JUB-JI2r-uoTe-Hupi-WGisCe
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LV Creation host, time ,4 i: h# l: w5 q/ a4 @7 M
LV Status unavailable <==== 不可用6 r3 g( }; ^2 `- n7 d
# open 12 ^0 \$ A* h# y' x% K2 l2 V
LV Size 21.84 GiB
2 N! I- E/ R" C' ~$ l Current LE 5591
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Allocation inherit
3 w; `; N# d7 j Read ahead sectors auto
# L9 | C. e( _% u9 a - currently set to 256
) D1 g) i) @0 ^8 x2 k7 o# ] Block device 253:27 V V2 p) D: Y6 `: k
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* ]! J, v. V4 D; I重點在這裡:6 @5 h# q- P" [ S+ A
vgchange -ay vg_centos6 <====== 啟動 VG (假如 關閉VG ==> vgchange -an vg_centos6)) I6 K4 s! |* ]5 a( L7 _+ f/ y
再查一次 LV:
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* C9 n* G3 T8 H5 d8 p w ACTIVE '/dev/vg_centos6/lv_root' [21.84 GiB] inherit <====已啟動了; g, H+ k5 N% j- i/ t6 k' K
ACTIVE '/dev/vg_centos6/lv_swap' [5.62 GiB] inherit <====已啟動了 ?7 @7 O. O7 M( u1 l$ m
ACTIVE '/dev/vg_test/lv_root' [16.98 GiB] inherit
; U, P% D7 G& y A* Z ACTIVE '/dev/vg_test/lv_swap' [1.94 GiB] inherit$ @: L9 o0 }; e v
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6 ?9 S3 a9 h& D! S4 m" h: @, bmount LVM:1 ~+ m2 c1 w' L+ ?1 t2 \
mkdir /mnt/lvmdisk
' j3 j! x- E6 u4 Emount /dev/vg_centos6/lv_root /mnt/lvmdisk
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發表於 2016-1-20 16:52:08
