fileDescriptor = open( inPathName, O_RDWR, 0 ); if( fileDescriptor < 0 ) { outError = errno; } else { // We now know the file exists. Retrieve the file size. if( fstat( fileDescriptor, &statInfo ) != 0 ) { outE
fileDescriptor = open( inPathName, O_RDWR, 0 ); if( fileDescriptor < 0 ) { outError = errno; } else { // We now know the file exists. Retrieve the file size. if( fstat( fileDescriptor, &statInfo ) != 0 ) { outError = errno; } else { ftruncate(fileDescriptor, statInfo.st_siz...
The filesystem on /dev/vg1/lv1 is now 102400 blocks long. [root@linux-01 ~]# lvresize -L 100M /dev/vg1/lv1 WARNING: Reducing active logical volume to 100.00 MiB. THIS MAY DESTROY YOUR DATA (filesystem etc.) Do you really want to reduce vg1/lv1? [y/n]: y Size of logical vol...
a file size of 1024 bytes would be displayed as 1 kilobyte (KB), and a file size of 1048576 bytes would be displayed as 1 megabyte (MB). This helps users understand the relative size of files and folders on their system and make informed decisions about...
Active: 3650920 kB #active包含active anon和active file Inactive: 1343420 kB #inactive包含inactive anon和inactive file Active(anon): 2913304 kB #anonymous pages(匿名页),用户进程的内存页分为两种:与文件关联的内存页(比如程序文件,数据文件对应的内存页)和与内存无关的内存页(比如进程的堆栈,用malloc申请...
c. data ares中紫色的区域block size,就是我们一般概念上的磁盘块。这块区域是我们用来存放数据的地方。 d. 还有一个逻辑上的概念:FS中每分配2048 byte给data area, 就分配一个inode。但一个inode就并不一定就用掉2048 byte, 也不是说files allocation的最小单位是2048 byte, 它仅仅是代表filesystem中inode ta...
Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:0 所以我们用lvreduce进行调整! [root@yangcan /]# lvreduce -L 6000M /dev/vg6/ftpdata WARNING: Reducing active and open logical volume to 5.86 GiB THIS MAY DESTROY YOUR DATA (filesystem etc.) ...
[root@root~]# mkfs.ext3 /dev/vg0/rlv0 mke2fs 1.39 (29-May-2006) Filesystem label= OS type: Linux Block size=1024 (log=0) Fragment size=1024 (log=0) 3072 inodes, 12288 blocks 614 blocks (5.00%) reserved for the super user First data block=1 Maximum filesystem blocks=12582912 ...
FAT即File Allocation Table(文件分配表)的简称,FAT系列的文件系统曾经是个人机平台应用最广泛的文件系统,除此之外它们还经常被应用于许多系统的内存模块管理中。FAT文件系统因其对存储在其内部的文件的管理方式而得名,它将组成每个文件的数据块以指针链表的方式串联起来,并依靠FAT表来管理文件系统内部的空闲空间。FAT...
* proportional to the original scan target.*/nr_file= nr[LRU_INACTIVE_FILE] +nr[LRU_ACTIVE_FILE]; nr_anon= nr[LRU_INACTIVE_ANON] +nr[LRU_ACTIVE_ANON];/** It's just vindictive to attack the larger once the smaller * has gone to zero. And given the way we stop scanning the ...