*/ atomic_t _mapcount; /* * If the page is neither PageSlab nor mappable to userspace, * the value stored here may help determine what this page * is used for. See page-flags.h for a list of page types * which are currently stored here. */ unsigned int page_type; unsigned int ...
(path, label, uuid) --target <target> explicitly specifies mountpoint -v, --verbose say what is being done -w, --rw, --read-write mount the filesystem read-write (default) -N, --namespace <ns> perform mount in another namespace -h, --help display this help -V, --version ...
This practice is not unique to Unix; you’ll still find many new Windows systems with several partitions on a single disk. In addition, most systems have a separate swap partition. 注意 在拥有大容量硬盘的系统上,多个数据分区曾经很常见,因为旧的个人电脑只能从硬盘的某些部分启动。 此外,管理员使用...
It is theoretically possible to interact with a network interface using a single character device, but because it would be exceptionally difficult, the kernel uses other I/O interfaces 注意 并非所有设备都有设备文件,因为块设备和字符设备的I/O接口并不适用于所有情况。例如,网络接口没有设备文件。理论上...
It's a LUN 0 and is 4GB. For a more complex example, here's what multiple data disks look like in the portal: In the image, you can see that there are 3 data disks: 4 GB on LUN 0, 16GB at LUN 1, and 32G at LUN 2. Here's what that might look like using lsblk: 輸出 ...
You’ll learn how to partition disks, create and maintain the filesystems that go inside disk partitions, and work with swap space. 在第三章中,我们讨论了内核提供的一些顶层磁盘设备。 在本章中,我们将详细讨论如何在Linux系统中使用磁盘。 您将学习如何分区磁盘,创建和维护磁盘分区内的文件系统,并处理...
In fact, the total number of mount options is staggering. The extensive mount(8) manual page is a good reference, but it’s hard to know where to start and what you can safely ignore. You’ll see the most useful options in this section 有许多方法可以改变挂载命令的行为,这在使用可移动...
The individual package manager is not very important on its own, but it creates a compatibility difference between systems that use one versus the other. For example, depending on what features you’re using, you can easily interchange systems that use the RPM system (sometimes called “rpm Li...
You could identify which partition is used for what purpose from its mount point. Root is mounted on /, EFI in /boot/EFI etc. In my case, I have used 41% of the 232 GB of disk space under root. If you have 2-3 big partitions (like root, home etc), you’ll have to make a...
2. Using /proc/swaps – Measures Swap Space 3. Using ‘free’ Command – Show Swap Usage 4. Using top Command 5. Using atop Command 6. Using htop Command 7. Using the Glances Command 8. Using the vmstat Command Summary What is Swap space?