problem with extending a file system size

[praveen..]

Hi,
i have online JFS but version is B.11.11

root@server:[/root]# swlist -l product | grep JFS
JFS B.11.11 The Base VxFS File System
OnlineJFS B.11.11 Online features of the VxFS File System
PHKL_24026 1.0 JFS Filesystem swap corruption
PHKL_28512 1.0 Fix for POSIX_AIO in JFS3.3
PHKL_29115 1.0 JFS Direct I/O cumulative patch
PHKL_30366 1.0 JFS3.3;ACL patch
root@server:[/root]# uname -a
HP-UX server B.11.11 U 9000/800 4290461787 unlimited-user license


i need to extend a file system size,
can i do it without unmounting that file system?

should i use only these two commands:
#lvextend -L 20480 /dev/vg00/lvol9
#fsadm -F vxfs -b 20480M /opt/oracle

please suggest

[Victor BERRIDGE]

Hi,

You could of couse use SAM for this...

Now in command line, yes you use the two commands:
#lvextend -L 20480 /dev/vg00/lvol9
#fsadm -F vxfs -b 20480000 /opt/oracle

But enlighten me, why so big for /opt/oracle in vg00?

All the best
Victor

[Victor BERRIDGE]

Hi,

You could of couse use SAM for this...

Now in command line, yes you use the two commands:
#lvextend -L 20480 /dev/vg00/lvol9
#fsadm -b 20480000 /opt/oracle

But enlighten me, why so big for /opt/oracle in vg00?

All the best
Victor

[A. Clay Stephenson]

You are close,

lvextend -L 20480
would correspond to a -b argument for fsadm of 20971520.

This can be done while the filesystem is mounted and applications are running as long as this is actually a vxfs filesystem. That's the one point that you did not make certain. You need to execute "fstyp /dev/vg00/lvol9".

Finally, I would not install Oracle in vg00. vg00 should be used for the OS and HP supplied executables and very little else.

[Josiah Henline]

I believe you need to know the number of bytes / sector. You can get this from a disk info. It should be 512.

1MB = 1024bytes * 1024bytes = 1048576
1048576bytes * 20480Mbytes = 21474836480bytes
21474836480bytes / 512bytes per sector = 41943040 sectors.

fsadm -F vxfs -b 41943040 /dev/vg00/lvol9

[Josiah Henline]

From the man page:
-b newsize Resize the file system to newsize sectors.


Online JFS will allow you to extend the file system while it is mounted.

[Patrick Wallek]

Actually the '-b' option to fsadm will accept the size in MB as long as you add a 'm' or 'M' to the end of the size.

# fsadm -b 20480m /opt/oracle

is perfectly valid, but undocumented in the man page, syntax.

[praveen..]

i checked with fstyp command and found that this is vxfs file systems.

so can i run these two commands for extending the size without unmounting the file systems.

#lvextend -L 20480 /dev/vg00/lvol9
#fsadm -F vxfs -b 20480M /opt/oracle

[Darrel Louis · Accepted solution]

Praveen,

Yes it's oke to perform as you suggested

Darrel

[praveen..]

#lvextend -L 20480 /dev/vg00/lvol9
#fsadm -F vxfs -b 20480M /opt/oracle

it works