HP-UX 10.20 File Systems

[Richard Hirtle]

HP-UX Support,

We have manufactured an imaging console with an embedded HP Workstation to
which is attached a Sony Magneto Optical Disk Drive. The MOD is used to hold
image files for later off-site analysis. Our customer has asked if the MOD
file system currently "hfs" could be changed to a neutral Unix format "ufs" or
other such format so that the MOD disks could be read on a SunOS or Windows
based hardware platform with similar Sony MOD drive. Does HP-UX 10.20 support
alternate file systems to "hfs"? If so, how do you use SAM or direct HP-UX
10.20 calls to select this alternate file system when formatting the MOD
disks. Alternately are their any HP-UX or third-party utilities that would
allow "hfs" MOD disks to be read by non-HP-UX based platforms?

Regards,
Dick Hirtle

[Neil Gast_1]

The hfs file system IS the ufs filesystem, and CAN be read under SunOS.
Windows, however, is a whole new issue.
The solution to your problem depends on how you want to access the data on the
drives: (1) access via NFS, or (2) disconnect MOD and reconnect to another type
of server.
If NFS, you can already export/mount between HP and Sun with no problem. If you
want to share to/from a Windows platform, you'll need to either run an NFS tool
on the Windows server, or run an SMB tool (like Samba) on the Unix platform
(recommended).
If you want to move the hardware around, you should be ok between HP and Sun,
but you'll likely find it impossible between HP and Windows.

MrNeil

[Jason Luginbuhl_1]

Richard,

HPUX 10.20 also allows the Veritas filesystem VxFS. Sometimes it is referred to
as JFS for (Journaled Files System). When creating a filesystem from the
command line you can toggle between hfs and vxfs with the -F flag. For example:
# newfs -F vxfs /dev/vg00/rlvol9

SAM also allows this. When creating a new filesystem in SAM, you can select the
"Modify File System Defaults" and then change the FS Type from HFS to VxFS.

To make it so that SAM will default to JFS and so that a newfs or mkfs command
without a -F will default to vxfs rather than hfs, you can edit the following
file:
# vi /etc/default/fs
LOCAL=vxfs