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[linux隞也 雿輻 gdiskparted(舀孱PT)隞支脩′蝣,fdisk 芣舀尋BR銝舀孱PT

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頝唾唳摰璅撅
璅銝
潸” 2016-1-2 20:13:26 | 芰閰脖 撣 |摨閬 |梯璅∪
砍敺 IT_man 2017-3-21 22:08 蝺刻摩 & Y8 g; N$ u( \0 y% W
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: http://linux.vbird.org/linux_basic/0230filesystem.php#parted  http://blog.yam.com/wesley1981/article/16596463        賊隞 fstab, findfs, mount  blkid3 t# B' E& V# h9 l2 u" c4 O
fdisk 隢 :http://blogger.gtwang.org/2012/02/linux.html. p+ o$ l7 W4 u
format 憭扳 16TB 蝖祉(>16TB銝摰閬冽迨隞) : http://www.unix-ninja.com/p/Formatting_Ext4_volumes_beyond_the_16TB_limit/http://blog.yourdream.cc/2014/11/19/morethan16t.html  D+ W8 K: d: g. x: h

2 C/ B) x3 x" x' i啣蝖祉,璈芸mount(銝隞孑ount芣舀急,璈銝芸mount) :/etc/fstab 乩銝銵:! k1 o3 `& m; B7 A  Q0 w  {2 |
/dev/sdb1               /home2                  ext4    defaults        1 1( O* S) j% G$ I
# ?$ u5 H4 w1 O3 P1 [' k# P
parted 閰喟敦隞:https://blog.gtwang.org/linux/pa ... -disk-partitions/2/
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( E& G0 s7 L8 N' o+ r! ]fdisk 隞文芣舀 MBR 銝舀 GPT ,閬 GPT蝖祉雿輻 parted 游隞文脩′蝣,隞乩撠隞蝝 parted冽) e( c& N  g7 A: i8 L9 U

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parted 臭誑湔亙其銵隞文撠勗莎臭撣詨末函隞歹摰撣貊函隤瘜憒銝嚗
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parted [鋆蝵孫 [隞 [窟]
( G5 ?% T9 M" P賊賂
% }% f  @( L; X+ d" t隞文踝- a; D) T8 C* \  r3 @
          啣莎mkpart [primary|logical|extended] [ext4|vfat|xfs] 憪 蝯
0 x. s' o7 v+ y# o          憿舐內莎print3 b8 l% Q5 C+ z7 E/ Y& u" X
          芷文莎rm [partition]8 q6 D) X$ Y2 N0 v3 Z$ [/ h
靘憒:
# n5 O5 \$ }: d% B& O

+ u2 J: h0 F/ M7 w  ], t寞銝:5 P9 ]" e5 r3 T5 L, ?/ {7 Y
(parted) mkpart primary 0 100% (primary皰artition name)
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寞鈭:! n4 s5 Q$ d; a$ p* |
Partition name?  []? 30T_part! I' Z( _4 @; u$ B+ U$ S
File system type?  [ext2]? ext2  (ext4銝霅血)0 T5 q9 T$ k  c. f
Start? 0B or 0%- ^+ J: @  s' `  }
End? 30TB or 100%
6 H7 _& y, x0 v4 P/ RWarning: You requested a partition from 0.00B to 30.0TB.5 X/ ~. Z% w  v' h3 S1 C  ~
The closest location we can manage is 17.4kB to 30.0TB.
) K+ Z. O. ]" I/ L$ ?0 P9 I1 NIs this still acceptable to you?
+ [  z( i" G( J9 g' C$ RYes/No? Yes
; f2 o5 w6 _  b+ N1 ~Warning: The resulting partition is not properly aligned for best performance.
1 L3 x5 V8 Z; RIgnore/Cancel?
9 e* ~* A1 O  G" ^5 O* w. m7 @雿輻牠xt2撠曹銝餈啗郎9 V) ?* |' c: k7 K" g  F2 {( o
mkfs -t ext4 /dev/sdb1 ===> format
; G2 m1 Q. D- P% G. P; ]3 q3 B% hERROR:
& u* _: k0 X" Pmkfs.ext4: Size of device /dev/sdb1 too big to be expressed in 32 bits
/ s6 b  Q# ~. p- Y: N        using a blocksize of 4096% u- z5 w7 R$ |- J, `
SOL:
5 s4 ], {$ w6 L  {4 E+ o0 dformat > 16TB see https://www.unix-ninja.com/p/For ... yond_the_16TB_limit) i, ^/ Z7 ^  E2 v, v4 ]
/usr/local/src/wget -Oe2fsprogs-1.42.7.tar.gz http://downloads.sourceforge.net ... _mirror=superb-dca3
5 U* P7 Y" h& z. L/usr/local/src/tar -zxvf e2fsprogs-1.42.7.tar.gz; k# Z4 E0 M9 d6 V
cd /usr/local/src/e2fsprogs-1.42.7
; ^0 p/ q3 i$ u. ]$ V7 W% d7 b1 Emkdir build
* P' t3 I3 O+ }- g- H( V0 }; E9 z& xcd build
- k* h4 n5 e5 t# \7 M& H ../configure  U$ Y; }" z- l
make% `- Z3 a& H. A  {' o! ~
make install
4 o8 d) [" i1 mmke2fs -O 64bit,has_journal,extents,huge_file,flex_bg,uninit_bg,dir_nlink,extra_isize -i 4194304 /dev/sdb15 T3 W7 ?2 E3 [" N
憿舐內銝:
" z2 q. r& j; R' r3 c- kThis filesystem will be automatically checked every 27 mounts or& Q" x2 t& |8 N* k
180 days, whichever comes first.  Use tune2fs -c or -i to override.2 D+ u  k# v0 t6 p- ^8 d
/etc/fstab銝剖乩 : (fstab隞蝝:http://horace1123.pixnet.net/blo ... b%E8%AA%AA%E6%98%8E)
1 [6 h+ m1 }+ F$ i4 m0 W/dev/sdb1     /home2     ext4    defaults     1 0(蝚砌詨1:瘥亙隞,蝚砌詨0:蝟餌絞銝甇撣豢fsck銝瑼X)
0 z# n- H6 N! T% |' ]/ z. Q7 [/ ^, Amount /home2# W* n8 n" h6 r

& i  ~) r; |8 {0 d
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=======================================================================
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[蝖祉皜祈岫]1./ D) G+ m' A8 k  i' D# y/ R
Linux蝖祉撖怠仿摨行葫閰衣隞:
: I1 U: `0 x6 e2 A. l+ a#time dd if=/dev/zero of=/home2/test bs=2k count=1000000   //     /home2 痂ount raid0 33TB 蝖祉, 11*3TB銋SCSI蝖祉& D8 K/ F& M1 S1 S% ?/ a8 S
1000000+0 records in
; D9 L: ]! w9 j2 p; L9 {& Z1000000+0 records out
/ |0 O* X  V6 `# f( q9 v2048000000 bytes (2.0 GB) copied, 3.58735 s, 571 MB/s
" h  z7 W6 J! V
; @/ ^9 N& {1 u. H8 d3 v& zreal    0m3.590s  t9 U+ G% J, ?  ^2 r
user    0m0.130s7 Q7 K7 W- V2 H5 ~1 L  T8 O
sys     0m3.455s
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Linux蝖祉霈摨行葫閰衣隞:! e9 ?- N+ S& @* J0 i% I
#time dd if=/home2/test of=/dev/null bs=2k
1 ?' E$ A7 e' F- E9 F+ ]4 A1000000+0 records in2 @& }% y' e9 v% I& @) d
1000000+0 records out
: r; u+ F) t2 B( c2048000000 bytes (2.0 GB) copied, 0.952334 s, 2.2 GB/s# n6 C- X7 ^+ L# W

8 y  I( X9 q) p9 Y: y8 mreal    0m0.954s1 y: `8 w" a+ e2 q
user    0m0.083s# j& A0 s3 i/ Q5 N# E2 o
sys     0m0.868s
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閫嚗
6 `1 m8 d# v0 P0 B4 v5 |2 Vtime 其閮
3 }/ E% Q1 f, G% b3 p$ ddd 其銴鋆踝敺if OF& {7 M7 {( {/ Q1 M; J6 y  e: g4 p
if=/dev/zero銝YIO嚗隞亙臭誑其皜祈岫蝝蝎孵神摨;璅 of=/dev/null 銝YIO嚗臭誑其皜祈岫蝝蝎寡摨2 V/ n0 V/ U$ B& R( N$ f, H
bs 舀甈⊥葫閰血桐憭批嚗count航撖怎嚗訾撠望航憭批.
. c, o0 {4 X) d. c鞈頞憭扯皞蝣綽憭皜祈岫靘撟喳潦
7 e9 s- p, R' p* b豢頞憭扯蝖殷憭甈⊥葫閰血撟喳" {; L6 h& J9 L2 k
望葫閰衣敺啁豢憿舐內摨衣貊嗅翰鈭
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皜祈岫摰閮敺芷 /home2/test
# a( I4 I. G7 w( n' {: u2.: z6 c8 z' x) Y3 m$ w
虫蝔格寞:
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皜祈岫蝖祉霈摨:/ u' h' M$ f" e5 t: F4 ^2 R
hdparm -t /dev/sdb) J- @4 H: u/ f' j# J/ Y" l! f

1 p, k7 k* |$ a  B) m/dev/sdb: (雿輻禿aid0摨血翰)
- `3 M) g" i- z% \: x( s+ a Timing buffered disk reads: 1732 MB in  3.00 seconds = 576.98 MB/sec
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7 ^% K) K( q4 f/ s% R$ S/dev/sdb: (敺靘寞LVM摨行)% z2 T" |" [0 }7 P9 T& l- b; p
/dev/sdb:$ h) n8 N5 `7 ?) b7 Q5 A' C( P
Timing buffered disk reads: 546 MB in  3.01 seconds = 181.43 MB/sec, Q7 j. B" J" L: d7 Z
皜祈岫蝖祉撖怠仿摨:7 l& I  o/ e9 O8 I$ N" a  P
hdparm -t --direct /dev/sdb
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/dev/sdb: (雿輻禿aid0摨血翰)
' s5 D: N1 i. p3 x Timing O_DIRECT disk reads: 1326 MB in  3.29 seconds = 402.57 MB/sec8 c8 M3 t& n9 ?) R

0 W5 S2 n0 H8 t# X% N/dev/sdb: (敺靘寞LVM摨行)' V/ L- D3 W% r' e. L& P4 ]
Timing O_DIRECT disk reads: 560 MB in  3.00 seconds = 186.36 MB/sec6 p! x2 b6 @. E5 }7 {8 f& s

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- P& [, R8 m6 G) n3 d血皜祈岫 /dev/sda  SSD蝖祉 摨血芣 raid0 scsi 蝖祉銝! b% D# v" Y1 b# K; j

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