which file system will be mounted in single user mode

[subrata biswal]

which file system will be mounted in single user mode.
In LVM maintenance mode which file system will be mount,and how i read this
How i will extend root file system.

[Torsten. · Accepted solution]

You CANNOT extend the root fs, not even in maintenance or single user mode (because it must be continuous) - consider to backup/restore with ignite!

[vishnu.khandare]

Hi Subrata,

U cannot extend the file system in single user mode,
Two option are there,
1) Regular backup and restore after extending mount point.
2) If u have Online JFS u can extend the mount point online, run time.

Hope U know steps of both.

Don't forget to assign points


Regards
Vishnu Khandare

[subrata biswal]

I am not asking in single user mode for root file system extension.
i am asking in multiusermode how i should extend my root volume.

what command i can use in lvm maintenance mode which file should be mounted.

[Pete Randall]

Read Torsten's answer again - you can NOT extend the root file system no matter what mode you are in.


Pete

[Doug O'Leary]

Hey;

Maintenance mode is appropriately named: it's designed to get you to a command prompt where you can repair your OS volume group. To directly answer your question, / and /stand should be the only filesystesm mounted.

As Torsten mentioned, you cannot extend the root filesystem as it has to be contiguous - unless you're so incredibly lucky as to have the requiesite number of free extents available contiguous with the existing extents.

If you're that lucky, you need to be playing the lottery not mucking about w/LVM.

The first question to answer when looking to extend the root filesystem is why do you need to? / should be a fairly static filesystem once the OS is installed. If files are being written there or are growing in there, you should find out what they are and either move them to their correct filesystems or generate a new one and mount it where those files are being written.

You can find the files that have been written in the last seven days by:

find / -xdev -type f -mtime -7 -print

If you decide to increase / anyway, the correct method is to create make_net_recovery image of the box and rebuild it from that image. One of the first steps in that process is to identify filesystem sizes.

HTH;

Doug

[Torsten.]

Maybe its better to repeat the answer ...





You

CANNOT

extend the root fs, not even in maintenance or single user mode (because it must be continuous) - consider to backup/restore with ignite!





.

[subrata biswal]

Still you are not getting my question
In INIT 3 can it possible to extend root file system .

Second question

In lvm maintenance mode which file system will be mounted.hpux-lm command only used.any other command how i can maintenance in lvm mode.

[Torsten.]

Maybe you don't get the answer ... you cannot extend the root filesystem in any mode.

(if you are very experienced in using LVM and you have LVM mirrored disks and online jfs there is a (complicated) way to do this, but I don't recommend this at all!)


Use ignite!


In maintenance and single user mode only / and /stand are accessible.

[subrata biswal]

can i get any book related about lvm. for me that is very urgent,because for my office work it is required.

and another question
what is the difference between 11.0,11.11,11.31
Any book can i get?

[Pete Randall]

>Still you are not getting my question
>In INIT 3 can it possible to extend root file system .

Still you are not getting the answer -
NO YOU CANNOT EXTEND THE ROOT FILE SYSTEM, REGARDLES OF THE MODE OR INIT LEVEL ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
NO
NO
NO
NO


PETE

[Torsten.]

11.0,11.11,11.23,11.31 are different versions of HP-UX; anything below 11.11 is not supported anymore.
There are a lot of differences and a lot of documentation at HP's BSC website.

[Pete Randall]

LVM documentation is available here:

http://h20000.www2.hp.com/bizsupport/TechSupport/DocumentIndex.jsp?lang=en&cc=us&taskId=101&prodClassId=10008&contentType=SupportManual&docIndexId=64255&prodTypeId=18964&prodSeriesId=4296010


Pete

[S. Ney]

Here are some older threads about the root filesystem being close to full. Some of these may be of use. There are some commands you can run to look for large files, old files etc. You may be able to free some space however as the others have suggested use ignite to resize / if it is too small.

http://forums13.itrc.hp.com/service/forums/questionanswer.do?admit=109447627+1226431394242+28353475&threadId=1170522

http://forums13.itrc.hp.com/service/forums/questionanswer.do?admit=109447627+1288114565419+28353475&threadId=1275669

http://forums13.itrc.hp.com/service/forums/questionanswer.do?admit=109447627+1226431914491+28353475&threadId=1196040

[Steven E. Protter]

Shalom,

The only way to extend root fs is to do an ignite backup, boot the system and use the ignite restore interface to restore to a larger root disk.

Bottom line though is there should not be any real files other than configuration in root fs.

You should identify the files taking up space and eliminate or move them.

Only root fs is mounted in single user mode.

mount -a or individual mounts are possible for local disks.

SEP

[Fraga]

Well, u can't extend this fs, btw.. this can help you.

do Backup with ignite (FULL)
Use the root disk with your backup....

[Torsten.]

As said before, its possible - but the important question is:

Why you think you need to extend this LVOL?

[subrata biswal]

For interview they are asking and for that i ve t try in office.

IN lvm maintaince mode which file system should be mount,how you can you read the file system.

[Torsten.]

This question is already answered above.

[Pete Randall]

I think, technically, that no file systems would be mounted in LVM maintenance mode. Booting in lvm maint means that you boot from a disk without using the LVM structures on that disk. The system uses a standard offset to locate the root file system, but it (technically) doesn't mount it. You can use LVM commands to fix whatever LVM problems you are experiencing and then attempt to reboot normally.


Pete

[Torsten.]

Correct, the system uses the infomation stored in the disks LIF area to access /stand, swap and root directly without activating vg00, this is also the reason why all of them must be continuous.

[subrata biswal]

ok i got my answer