因为预算问题，没法买服务器级别的PCIE固态，于是在某东买了一块
M.2固态硬盘 和 一个 M.2转PCIE的卡。
顺便重温下Linux挂载硬盘
[root@localhost ~]# fdisk -l
Disk /dev/nvme0n1: 500.1 GB, 500107862016 bytes
64 heads, 32 sectors/track, 476940 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/sda: 249.5 GB, 249510756352 bytes
255 heads, 63 sectors/track, 30334 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000173a3
[root@localhost ~]# fdisk /dev/nvme0n1
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0x78189e91.
Changes will remain in memory only, until you decide to write them.
After that, of course, the previous content won't be recoverable.
Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)
WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
switch off the mode (command 'c') and change display units to
sectors (command 'u').
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-476940, default 1):
Using default value 1
Last cylinder, cylinders or size{K,M,G} (1-476940, default 476940):
Using default value 476940
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
[root@localhost ~]# fdisk -l
Disk /dev/nvme0n1: 500.1 GB, 500107862016 bytes
64 heads, 32 sectors/track, 476940 cylinders
Units = cylinders of 2048 * 512 = 1048576 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x78189e91
Device Boot Start End Blocks Id System
/dev/nvme0n1p1 1 476940 488386544 83 Linux
[root@localhost ~]# mkfs -t ext4 /dev/nvme0n1
mke2fs 1.41.12 (17-May-2010)
Discarding device blocks: done
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
30531584 inodes, 122096646 blocks
6104832 blocks (5.00%) reserved for the super use
First data block=0
Maximum filesystem blocks=4294967296
3727 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
102400000
Checking for bad blocks (read-only test): done
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 32 mounts o
180 days, whichever comes first. Use tune2fs -c or -i to override.
[root@localhost ~]# mkdir /ssdm2
[root@localhost ~]# mount /dev/nvme0n1 /ssdm2
