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Adding a filesystem.

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# 1  
Old 08-25-2008
Adding a filesystem.
Hi All!
I need to create a new filesystem /u01 , using the existing space and giving 100GB space to /u01.

I can allocate 100Gb from / which is currently 145GB.

Following is the screen shot of my df command.

Code:
[root@localhost ~]# df
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/mapper/VolGroup_ID_18293-LogVol4
                     153624628    449668 145371264   1% /
/dev/sda3             10278336     64824   9691400   1% /boot
none                   4673216         0   4673216   0% /dev/shm
/dev/mapper/VolGroup_ID_18293-LogVol5
                      20384396     77920  19271008   1% /tmp
/dev/mapper/VolGroup_ID_18293-LogVol8
                      50766508   2748568  45439100   6% /usr
/dev/mapper/VolGroup_ID_18293-LogVol7
                      20609660    261064  19301660   2% /var
/dev/mapper/VolGroup_ID_18293-LogVolHome
                      19739316    191408  18545208   2% /home

I googled , but am a little confused on the steps I need to follow.
Can some one please send a link or the steps that I need to follow.

Thanks for all the help!

nua7
# 2  
Old 08-25-2008
As I know to reallocate disk space on your root filesystem using LFM lvextend/lvreduce you will need to boot from emergency CD because filesystem needs to be unmounted first for this operation. As this is root filesystem, it cannot be unmounted.
# 3  
Old 08-25-2008
Thanks a lot! I would be re-installing linux to achieve this.

nua7
# 4  
Old 08-25-2008
I heard something about ext2live patch for ext2, that allows unmounting to be done on them. Not sure about ext3.
# 5  
Old 08-25-2008
Quote:
Originally Posted by FractalizeR
I heard something about ext2live patch for ext2, that allows unmounting to be done on them. Not sure about ext3.
ext3 is just ext2 with journal support. All one needs to do is remove the journal, resize, re-add the journal.
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