磁盘预留空间的实验:
1、首先在要预留空间的分区上使用dd命令生成一个指定大小的文件:
创建一个10M的文件,名字是foobar:
# dd if=/dev/zero of=/home/foobar bs=1K count=10000
In Unix-like operating systems, /dev/zero is a special file that provides as many null characters (ASCII NULL, 0x00; not ASCII character "digit zero", "0", 0x30) as are read from it. One of the typical uses is to provide a character stream for overwriting information. Another might be to generate a clean file of a certain size. Using mmap to map /dev/zero to RAM is the BSD way of implementing shared memory.
2、将这个文件格式化:
# mke2fs -vFm0 /home/foobar 100000000 //(1K * 10000)
3、将这个文件mount,之后就可以向这个文件中写内容了,就好比向一个目录中写内容一样:
# mount -o loop home/foobar /mnt/mountpoint
摘自:http://blog.csdn.net/penn902/article/details/5746606
更多:http://blog.chinaunix.net/uid-8504518-id-2030389.html
1、首先在要预留空间的分区上使用dd命令生成一个指定大小的文件:
创建一个10M的文件,名字是foobar:
# dd if=/dev/zero of=/home/foobar bs=1K count=10000
In Unix-like operating systems, /dev/zero is a special file that provides as many null characters (ASCII NULL, 0x00; not ASCII character "digit zero", "0", 0x30) as are read from it. One of the typical uses is to provide a character stream for overwriting information. Another might be to generate a clean file of a certain size. Using mmap to map /dev/zero to RAM is the BSD way of implementing shared memory.
2、将这个文件格式化:
# mke2fs -vFm0 /home/foobar 100000000 //(1K * 10000)
3、将这个文件mount,之后就可以向这个文件中写内容了,就好比向一个目录中写内容一样:
# mount -o loop home/foobar /mnt/mountpoint
摘自:http://blog.csdn.net/penn902/article/details/5746606
更多:http://blog.chinaunix.net/uid-8504518-id-2030389.html
作者:jackxiang@向东博客 专注WEB应用 构架之美 --- 构架之美,在于尽态极妍 | 应用之美,在于药到病除
地址:https://jackxiang.com/post/7636/
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