Can not extend a JFS file system

UNIX AIX
1

Hi,
I am getting an error message when i try to increase the size of a filesystems
under AIX 4.3.3:

chfs: 0506-932 Can not extend a JFS file system with nbpi = 4096
and frag = 4096 past 134217728 (512 byte blocks).

-> Characteristics Journaled File System

                                                        [Entry Fields]

File system name /u04/db/TRAINING
NEW mount point [/u04/db/TRAINING]
SIZE of file system (in 512-byte blocks) [163840000]
Mount GROUP []
Mount AUTOMATICALLY at system restart? yes +
PERMISSIONS read/write +
Mount OPTIONS [] +
Start Disk Accounting? no +
Fragment Size (bytes) 4096
Number of bytes per inode 4096
Compression algorithm no
Large File Enabled true
Allocation Group Size (MBytes) 64

-->

  • Logical volume NAME nlv_training
    Logical volume TYPE [jfs]
    POSITION on physical volume middle +
    RANGE of physical volumes minimum +
    MAXIMUM NUMBER of PHYSICAL VOLUMES [32]
    to use for allocation
    Allocate each logical partition copy yes +
    on a SEPARATE physical volume?
    RELOCATE the logical volume during yes +
    reorganization?
    Logical volume LABEL [/u04/db/TRAINING]
    MAXIMUM NUMBER of LOGICAL PARTITIONS [4096]
    SCHEDULING POLICY for reading/writing parallel +
    logical partition copies
    PERMISSIONS read/write +
    Enable BAD BLOCK relocation? yes +
    Enable WRITE VERIFY? no +
    Mirror Write Consistency? yes +
2

Hi, Try to unmount the filesystem and run fsck -y against the LV. See if it finds and corrects the corruption to the filesystem. Then ty to increase the size... Hope this helps.

3

I receive the same error after the fsck.

4

Try with the filesystem size 63 GB or little lesser than 64 GB as 64 GB is the max supported size with 4096 nbpi value

Good luck..

5

create a backup, rmfs the filesystem (man rmfs), create a new one with a bigger number of bytes per inode (nbpi), etc and you can increase the size past 64 GB. Then restore the backup taken before.

The error message is pretty obvious and the filesystem parameters can't be changed after creation.

bakunin