Showing posts with label crfs in aix. Show all posts
Showing posts with label crfs in aix. Show all posts

Wednesday 2 June 2021

AIX LVM : File System Commands List

This post describes that few AIX LVM Volume Group Commands. Below are the list.

Lists all filesystems in the /etc/filesystems entry.
 # lsfs                                                          
                                                     
List all filesystems with detailed info.
 # lsfs -q

To list all filesystems (default).
 # lsfs -a

To specify the output in list format.
 # lsfs -l

To specify the output in column format.
 # lsfs -c  

To lists all jfs filesystems.                                                    
 # lsfs -v jfs                                                

To lists all jfs2 filesystems.
 # lsfs -v jfs2

Creates FS /testfs of type jfs in VG testvg of blocksize 64465.
 # crfs -v jfs -g testvg -a size=64465 -m /testfs

Create FS /testfs of type jfs on device /dev/lv00.
 # crfs -v jfs -d /dev/lv00 -m /testfs

Create a Filesystem /test of type jfs2 on VG testvg with 10G size.
crfs -v jfs2 -g testvg -m /test -A yes -a size=10G -p rw

Create a Filesystem /test of type jfs2 on LV testlv(Not required to specify size here)
crfs -v jfs2 -d testlv -m /test -A yes -p rw

To change size of FS /si to 24576 x 512 bytes blocks (12 MB).
 # chfs -a size=24576 /si

To add 24576 x 512 byte blocks to FS /si.
 # chfs -a size=+24576 /si

To decrease the filesystem size in AIX.
 # chfs -asize=-500M /file/system

To change the mount point from /si to /bi
 # chfs -m /si /bi

To auto mount the filesystem si.
 # chfs -A /si

To Remove account attribute of /si. ( from /etc/filesystems file).
 # chfs -d account /si

To mount the 2nd copy of mirrored filesystem oracle to /backup in read-only mode.
 # chfs -a splitcopy=/backup -a copy=2 /oracle

To delete filesystem /testfs and associated LV.
 # rmfs /testfs

To deletes FS /testfs its mount point and associated LV.
 # rmfs -r /testfs

To defragment the file system /sifs.
 # defragfs /sifs

Display the current defrag status of the file system.
 # defragfs -q /sifs

To fsck the filesystem associated to /dev/lv00 assuming response "yes"
 # fsck  -y n /dev/lv00

To restore superblock from backup superblock
fsck -p /dev/lv00
 

Previous posts we were discussed commands list for physical volumes AIX LVM Physical Volume Commands
AIX Volume Group Commands 
AIX LVM Volume Group Commands
AIX Logical Volume commands AIX Logical Volume Commands

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