Linux 块大小

  All  linux blocks are currently 1024 bytes. Old kernels may report blocks as 512
       bytes, 2048 bytes, or 4096 bytes.

Linux 块大小 1KB，

[root@backoffice01 ~]# tune2fs -l /dev/xvda1 | grep -i block
Block count:              5242624
Reserved block count:     262131
Free blocks:              4121812
First block:              0
Block size:               4096
Reserved GDT blocks:      1022
Blocks per group:         32768
Inode blocks per group:   512
Flex block group size:    16
Reserved blocks uid:      0 (user root)
Reserved blocks gid:      0 (group root)
Journal backup:           inode blocks


v-dev-redis01:/root# tune2fs -l /dev/sda1 | grep -i block
Block count:              204800
Reserved block count:     10240
Free blocks:              168663
First block:              1
Block size:               1024
Reserved GDT blocks:      256
Blocks per group:         8192
Inode blocks per group:   256
Flex block group size:    16
Reserved blocks uid:      0 (user root)
Reserved blocks gid:      0 (group root)
Journal backup:           inode blocks