Create jfs2 file system on AIX

Create a jfs2 file system on AIX:

First, you need to know:
– volume group?
– Type of filesystem (jfs, jfs2)?
– Mount point to mount the filesystem?

There are two ways to create filesystems on AIX:
1- Over an existing created logical volume (In this example, we’ll create a new filesystem over logical volume ‘newlv’, size 32M, mounted on /newfs, type jfs2.)

[root@aix:/] crfs -v jfs2 -A yes -d newlv -m /newfs
File system created successfully.
32560 kilobytes total disk space.
New File System size is 65536

NOTE: '-A yes' means to mount automatically the FS

2- Or creating a new LV (In this example we’ll create a new filesystem mounted on /newfs2, size 64MB, type jfs2 inside volume group ‘newvg’)

[root@aix:/] crfs -v jfs2 -g newvg -A yes -m /newfs2 -a size=64M
File system created successfully.
65328 kilobytes total disk space.
New File System size is 131072

NOTE: '-A yes' means to mount automatically the FS

Then, let’s mount filesystems:

[root@aix:/] mount /newfs
[root@aix:/] mount /newfs2

Now, you can check the filesystem with ‘lsfs’ and ‘df’ command:

[root@aix:/] df -m /newfs
Filesystem    MB blocks      Free %Used    Iused %Iused Mounted on
/dev/fslv05       64.00     63.67    1%        4     1% /newfs2
/dev/newlv        32.00     31.67    2%        4     1% /newfs
[root@aix:/] lsfs|grep newfs
/dev/newlv      --         /newfs                 jfs2  65536   --         yes  no
/dev/fslv05     --         /newfs2                jfs2  131072  --         yes  no
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About igalvarez

More than 20 years experiences on IT industry. 20+ years in Unix experience : IBM-AIX, HMC/SDMC/IVM, SVC, Protectier, PureFlex Systems, VIOservers, IBM Bladecenters, IBM System Power, RedHat Linux, SuSE Linux, Debian/Ubuntu Linux. Solaris, SCO Unix, Tru64 Unix, Linux Virtualization: XEN, KVM, databases sb2, oracle, postgreSQL, Find more information here: http://en.gravatar.com/igalvarez
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