[LVM] CentOS Disk LVM - xfs

1. Logical Volume 생성 및 확인

krcsdi4:~ # lvcreate -L 1g -n XFS-DATA vg01

Logical volume "XFS-DATA" created

krcsdi4:~ # ll /dev/mapper/vg01-XFS-DATA

total 0 brw-r----- 1 root disk 253, 2 Oct 27 18:05 vg01-XFS-DATA

 

2. xfs filesystem 생성

krcsdi4:~ # mkfs.xfs /dev/mapper/vg01-XFS-DATA

meta-data=/dev/mapper/vg01-XFS-DATA isize=256 agcount=4, agsize=65536 blks

= sectsz=512 attr=2

data = bsize=4096 blocks=262144, imaxpct=25

= sunit=0 swidth=0 blks

naming =version 2 bsize=4096 ascii-ci=0

log =internal log bsize=4096 blocks=2560, version=2

= sectsz=512 sunit=0 blks, lazy-count=1

realtime =none extsz=4096 blocks=0, rtextents=0

 

3. Mount Point 생성

krcsdi4:~ # mkdir /XFS

 

4. Mount 실시

krcsdi4:~ # mount /dev/mapper/vg01-XFS-DATA /XFS

 

5. Mount 확인

krcsdi4:~ # df /XFS

Filesystem 1K-blocks Used Available Use% Mounted on

/dev/mapper/vg01-XFS-DATA 1038336 4256 1034080 1% /XFS

 

6. Logical Volume 확장(1GB --> 2GB)

krcsdi4:~ # lvextend -L +1g /dev/mapper/vg01-XFS-DATA

Extending logical volume XFS-DATA to 2.00 GB

Logical volume XFS-DATA successfully resized

 

7. XFS File System 확장 

krcsdi4:~ # xfs_growfs /XFS

meta-data=/dev/mapper/vg01-XFS-DATA isize=256 agcount=4, agsize=65536 blks

= sectsz=512 attr=2

data = bsize=4096 blocks=262144, imaxpct=25

= sunit=0 swidth=0 blks

naming =version 2 bsize=4096 ascii-ci=0

log =internal bsize=4096 blocks=2560, version=2

= sectsz=512 sunit=0 blks, lazy-count=1

realtime =none extsz=4096 blocks=0, rtextents=0

data blocks changed from 262144 to 524288

 

8. XFS 확장 확인

krcsdi4:~ # df /XFS

Filesystem 1K-blocks Used Available Use% Mounted on

/dev/mapper/vg01-XFS-DATA 2086912 4384 2082528 1% /XFS

krcsdi4:~ #

 

Table E.1. Reference Table for ext4 and XFS Commands

Task	ext4	XFS
Creating a file system	mkfs.ext4	mkfs.xfs
Mounting a file system	mount	mount
Resizing a file system	resize2fs	xfs_growfs [a]
Repairing a file system	e2fsck	xfs_repair
Changing the label on a file system	e2label	xfs_admin -L
Reporting on disk space and file usage	quota	quota
Debugging a file system	debugfs	xfs_db
Saving critical file system metadata to a file	e2image	xfs_metadump
[a] The size of XFS file systems cannot be reduced; the command is used only to increase the size.