dd是不是有SIZE的上限？
# dd if=/dev/zero of=/home/lz/b bs=1024 count=10000000
dd: 0511-065 Requested a write of 1024 bytes, but wrote only 512.
# ls -alt
total 2097160
-rw-r--r-- 1 root system 1073741312 Feb 26 16:53 b
drwxr-xr-x 3 root system 256 Feb 26 16:51 .
drwxr-xr-x 6 bin bin 256 Feb 26 16:47 ..
-rw-r--r-- 1 root system 41 Feb 24 17:50 a.txt
drwxr-xr-x 2 root system 256 Feb 24 17:46 lost+found
# cat /etc/security/limits
*
default:
fsize = -1
core = 2097151
cpu = -1
data = 262144
rss = 65536
stack = 65536
nofiles = 2000
收起