3.7.2. 使​​​​​​​用​​​​​​​ gfs2_tool 启​​​​​​​用​​​​​​​或​​​​​​​者​​​​​​​禁​​​​​​​用​​​​​​​数​​​​​​​据​​​​​​​日​​​​​​​志​​​​​​​

以​​​​​​​下​​​​​​​命​​​​​​​令​​​​​​​在​​​​​​​ GFS2 文​​​​​​​件​​​​​​​ /mnt/gfs2/gfs2file 中​​​​​​​启​​​​​​​用​​​​​​​了​​​​​​​数​​​​​​​据​​​​​​​日​​​​​​​志​​​​​​​

[root@roth-01 ~]# gfs2_tool setflag jdata /mnt/gfs2/gfs2file 

您​​​​​​​可​​​​​​​以​​​​​​​使​​​​​​​用​​​​​​​ lsattr 命​​​​​​​令​​​​​​​确​​​​​​​认​​​​​​​设​​​​​​​定​​​​​​​了​​​​​​​ jdata 标​​​​​​​签​​​​​​​。​​​​​​​

[root@roth-01 ~]# lsattr /mnt/gfs2
---------j--- /mnt/gfs2/gfs2file

当​​​​​​​为​​​​​​​该​​​​​​​目​​​​​​​录​​​​​​​设​​​​​​​定​​​​​​​ jdata 标​​​​​​​签​​​​​​​时​​​​​​​，之​​​​​​​后​​​​​​​在​​​​​​​那​​​​​​​个​​​​​​​目​​​​​​​录​​​​​​​中​​​​​​​创​​​​​​​建​​​​​​​的​​​​​​​所​​​​​​​有​​​​​​​文​​​​​​​件​​​​​​​和​​​​​​​目​​​​​​​录​​​​​​​都​​​​​​​进​​​​​​​行​​​​​​​日​​​​​​​志​​​​​​​操​​​​​​​作​​​​​​​。​​​​​​​

以​​​​​​​下​​​​​​​命​​​​​​​令​​​​​​​会​​​​​​​在​​​​​​​ /mnt/gfs2 目​​​​​​​录​​​​​​​中​​​​​​​生​​​​​​​成​​​​​​​名​​​​​​​为​​​​​​​ gfs2_dir 的​​​​​​​新​​​​​​​子​​​​​​​目​​​​​​​录​​​​​​​，并​​​​​​​为​​​​​​​该​​​​​​​目​​​​​​​录​​​​​​​设​​​​​​​定​​​​​​​ jdata 标​​​​​​​签​​​​​​​，然​​​​​​​后​​​​​​​确​​​​​​​认​​​​​​​标​​​​​​​签​​​​​​​设​​​​​​​置​​​​​​​是​​​​​​​正​​​​​​​确​​​​​​​的​​​​​​​。​​​​​​​此​​​​​​​后​​​​​​​，这​​​​​​​些​​​​​​​命​​​​​​​令​​​​​​​在​​​​​​​该​​​​​​​目​​​​​​​录​​​​​​​中​​​​​​​生​​​​​​​成​​​​​​​文​​​​​​​件​​​​​​​ gfs2file，然​​​​​​​后​​​​​​​确​​​​​​​认​​​​​​​为​​​​​​​那​​​​​​​个​​​​​​​文​​​​​​​件​​​​​​​正​​​​​​​确​​​​​​​设​​​​​​​定​​​​​​​了​​​​​​​标​​​​​​​签​​​​​​​。​​​​​​​

[root@roth-01 ~]# mkdir /mnt/gfs2/gfs2_dir
[root@roth-01 ~]# gfs2_tool setflag jdata /mnt/gfs2/gfs2_dir
[root@roth-01 ~]# lsattr /mnt/gfs2
---------j--- /mnt/gfs2/gfs2_dir
[root@roth-01 ~]# touch /mnt/gfs2/gfs2_dir/newfile
[root@roth-01 ~]# lsattr /mnt/gfs2/gfs2_dir
---------j--- /mnt/gfs2/gfs2_dir/newfile

要​​​​​​​从​​​​​​​某​​​​​​​个​​​​​​​文​​​​​​​件​​​​​​​或​​​​​​​者​​​​​​​目​​​​​​​录​​​​​​​中​​​​​​​清​​​​​​​除​​​​​​​ jdata 标​​​​​​​签​​​​​​​，您​​​​​​​可​​​​​​​以​​​​​​​使​​​​​​​用​​​​​​​ gfs2_tool clearflag jdata 命​​​​​​​令​​​​​​​，如​​​​​​​下​​​​​​​示​​​​​​​例​​​​​​​中​​​​​​​所​​​​​​​示​​​​​​​：

[root@roth-01 ~]# gfs2_tool clearflag jdata /mnt/gfs2/gfs2file 
[root@roth-01 ~]# lsattr /mnt/gfs2
------------- /mnt/gfs2/gfs2file