The file system format supported by CENTOS7 and the default is the file system with XFS as the system. "/" and "/boot" are all XFS formats! [Email protected] ~]# Cat/etc/filesystemsxfsext4ext3ext2nodev Procnodev devptsiso9660vfathfshfsplus*mke2fs Command:MKE2FS, Mkfs.ext2, MKFS.EXT3, MKFS.EXT4 are all available for disk formatting! Xfs! not supported For example, to perform the format of the EXT4 system (mkfs.ext4=mke2fs-t ext4)-l:=label, preset the label of the partition-T: Used to specify the type of file system (XFS, Ext4, ext3, ext2, etc.)-B: partition when specifying the size of each data block, Currently supports 1024, 248, 4096 bytes each block-I: Specify the inode size, the default is byte-n: Set the number of Inode, sometimes the default number is not enough, so you need to set the number of Inode-C: Before formatting the disk to detect whether there is a problem, Plus this option will be very slow after-m: when formatting, specify a percentage of the disk that is reserved to the administrator, which is only for the MKE2FS command format sdb1 for EXT4 file system [[email protected] ~]# mke2fs-t ext4-b 2048/dev/sdb1# is specified as a ext4 format with a block size of 2048; here's a command MKFS.EXT4 equivalent to Mke2fs-t EXT4MKE2FS 1.42.9 (28-dec-2013) Filesystem label=os type:linuxblock size=2048 (log=1) Fragment size=2048 (log=1) stride=0 blocks, Stripe width=0 blocks131072 inodes, 1048576 blocks52428 blocks (5.00%) reserved for the Super Userfirst data block =0maximum filesystem blocks=26948403264 Block groups16384 blocks per group, 16384 fragments per group2048 inodes per group Superblock backups stored on blocks: 16384, 49152, 81920, 114688, 147456, 409600, 442368, 802816 allocating group tables:done writing Inode tables:done &nbSp; creating Journal (32768 blocks): donewriting superblocks and filesystem accounting Information:done specify SDB1 as 2048k blocks [[email protected] ~]# mke2fs-b 2048/dev/sdb1 mke2fs 1.42.9 (28-dec-2013) Filesystem Label=OS Type:linuxblock size=2048 (log=1) Fragment size=2048 (log=1) stride=0 blocks, Stripe width=0 blocks131072 inodes, 1048576 b locks52428 blocks (5.00%) reserved for the Super Userfirst data block=0maximum filesystem blocks=53791948864 block Groups1 6384 blocks per group, 16384 fragments per group2048 inodes per groupsuperblock backups stored on blocks:   ; 16384, 49152, 81920, 114688, 147456, 409600, 442368, 802816 allocating group tables : done writing Inode tables:done writing Superblocks and FilesyStem Accounting Information:done [[email protected] ~]# mke2fs-t ext4-m 0.1/dev/sdb1 # 1.1 of the space is reserved to the root user, and the file system format is specified as EXT4, if not specified, the default is Ext2mke2fs 1.42.9 (28-dec-2013) Filesystem label=os type:linuxblock size =4096 (log=2) Fragment size=4096 (log=2) stride=0 blocks, Stripe width=0 blocks131072 inodes, 524288 blocks524 blocks (0.1% ) reserved for the Super Userfirst data block=0maximum filesystem blocks=53687091216 block groups32768 blocks per group, 3 2768 fragments per group8192 inodes per groupsuperblock backups stored on blocks: & nbsp; 32768, 98304, 163840, 229376, 294912 allocating group tables:done writing Inode tables:done &Nbsp; creating Journal (16384 blocks): donewriting superblocks and filesystem accounting Information:done mke2fs specify inode corresponding block size [[email protected] ~]# mke2fs-t ext4-i 8192 /dev/sdb1 #增加inodemke2fs 1.42.9 (28-dec-2013) Filesystem label=os type:linuxblock size=4096 (log=2) Fragment size=4096 (log=2) stride=0 blocks, Stripe width=0 blocks262144 inodes, 524288 blocks26214 blocks (5.00%) reserved for the S Uper Userfirst Data block=0maximum filesystem blocks=53687091216 block groups32768 blocks per group, 32768 fragments per g roup16384 inodes per groupsuperblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912 allocating group tables:done writing Inode tables:done &nBsp; creating Journal (16384 blocks): donewriting superblocks and filesystem accounting Information:done Viewing partition information[Email protected] ~]# blkid/dev/sdb1/dev/sdb1:uuid= "ffd991f6-2fc8-4c56-9ffb-41a9f741d70d" type= "Ext4"mkfs Command:supported file systems mkfs.btrfs Mkfs.cramfs mkfs.ext2 mkfs.ext3 mkfs.ext4 mkfs.minix mkfs.xfs format sdb1 for XFS file system:[[email protected] ~]# mkfs.xfs/dev/sdb1 #用mkfs. XFS can be formatted for XFS, if it is already formatted need to add-F enforcement MKFS.XFS:/DEV/SDB1 appears To contain a existing filesystem (EXT4). Mkfs.xfs:Use the-f option to force overwrite. [[email protected] ~]# mkfs.xfs-f/dev/sdb1meta-data=/dev/sdb1 isize=512 agcount=4, agsize=131072 blks = sectsz=512 attr =2, projid32bit=1 = crc=1 finobt=0, sparse=0data = bsize=4096 blocks=524288, imaxpct=25 = sunit=0 swidth=0 Blksnaming =version 2 bsize=4096 ascii-ci=0 ftype=1log =internal log bsize=4096 blocks=2560, version=2 = sectsz=512 sunit=0 Blks, lazy-count= 1realtime =none Extsz=4096 blocks=0, rtextents=0
Linux disk formatting
