Aix&Linux&Windows操作系統block size查看

Oracle有db_block_size，操作系統也有 block size，下面簡要介紹

AIX:

查看AIX操作系統 每個block size 大小：

# lsfs -q /u01

Name            Nodename   Mount Pt               VFS   Size    Options    Auto Accounting

/dev/fslv00     --         /u01                   jfs2  50331648 rw         yes  no

  (lv size: 50331648, fs size: 50331648, block size: 4096, sparse files: yes, inline log: no, inline log size: 0, EAformat: v1, Quota: no, DMAPI: no, VIX: no)

Windows:

C:\Documents and Settings\Administrator>fsutil fsinfo ntfsinfo c:

NTFS Volume Serial Number :       0xfae82044e81ffe0f

Version :                         3.1

Number Sectors :                  0x0000000004ffffff

Total Clusters :                  0x00000000009fffff

Free Clusters  :                  0x00000000003ff408

Total Reserved :                  0x0000000000000000

Bytes Per Sector  :               512

Bytes Per Cluster :               4096

Bytes Per FileRecord Segment    : 1024

Clusters Per FileRecord Segment : 0

Mft Valid Data Length :           0x000000000fac8000

Mft Start Lcn  :                  0x00000000000c0000

Mft2 Start Lcn :                  0x0000000000000010

Mft Zone Start :                  0x00000000000cfac0

Mft Zone End   :                  0x0000000000200000

Linux:

[root@www.linuxidc.com ~]# tune2fs -l /dev/sda1

tune2fs 1.39 (29-May-2006)

Filesystem volume name:   /

Last mounted on:          <not available>

Filesystem UUID:          05b4b85c-eb01-4d22-b011-4307b910010b

Filesystem magic number:  0xEF53

Filesystem revision #:    1 (dynamic)

Filesystem features:      has_journal ext_attr resize_inode dir_index filetype needs_recovery sparse_super large_file

Default mount options:    user_xattr acl

Filesystem state:         clean

Errors behavior:          Continue

Filesystem OS type:       Linux

Inode count:              5124480

Block count:              5120710

Reserved block count:     256035

Free blocks:              4312881

Free inodes:              5006108

First block:              0

Block size:               4096

Fragment size:            4096

Reserved GDT blocks:      1022

Blocks per group:         32768

Fragments per group:      32768

Inodes per group:         32640

Inode blocks per group:   1020

Filesystem created:       Mon Dec 13 22:20:57 2010

Last mount time:          Thu Feb 10 08:39:51 2011

Last write time:          Thu Feb 10 08:39:51 2011

Mount count:              18

Maximum mount count:      -1

Last checked:             Mon Dec 13 22:20:57 2010

Check interval:           0 (<none>)

Reserved blocks uid:      0 (user root)

Reserved blocks gid:      0 (group root)

First inode:              11

Inode size:               128

Journal inode:            8

First orphan inode:       2872327

Default directory hash:   tea

Directory Hash Seed:      3f80d852-e54e-4a21-8142-b3e30299fdd2

Journal backup:           inode blocks

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