ext3의 다음버전인 ext4가 나왔죠
커널 버전 2.6.28부터 추가 되었고 ext3와 화위 호환성, 1EB(헉!!)의 파일 시스템과 파일 하나가 16TB까지 지원 그리고 이전에 비해 성능과 신뢰성을 끌어 올렸다고 하네요
[root@localhost ~]# cat /etc/redhat-release
CentOS release 5.5 (Final)
[root@localhost ~]# cat /proc/version
Linux version 2.6.18-194.el5 (mockbuild@builder16.centos.org) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-48)) #1 SMP Fri Apr 2 14:58:35 EDT 2010
CentOS release 5.5 (Final)
[root@localhost ~]# cat /proc/version
Linux version 2.6.18-194.el5 (mockbuild@builder16.centos.org) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-48)) #1 SMP Fri Apr 2 14:58:35 EDT 2010
그런데 CentOS 5.x가 2.6.18 기반이여서 그런지 기본으로 ext4가 기본으로 탑재가 안 되어 있더군요
(CentOS 5.5에 ext4가 없으니 하위버전도 그러겠죠?? 확인 안 해봐서ㅠㅠ)
뭐 CentOS가 Red Hat Enterprise Linux 기반으로 되어 있으니까 Red Hat Enterprise Linux에도 ext4가 기본 탑재 안 되어 있을것 같네요
(한갖 소문에는 Red Hat Enterprise Linux 5.4부터 탑재 한다고 하던데 5.5에 없네요~)
구글에서도 ext2를 버리고 ext4로 갈려고 하고 redhat 계열에서는 점차 ext4로 갈려고 계획 중인가 보더군요
그나저나 redhat 계열의 패키지 관리 프로그램인 yum을 이용해서 쉽게 ext4를 시스템에 적용 시킬 수가 있더군요
아래 같이 하면 ext4를 설치할 수 있을껍니다~
[root@localhost ~]# yum install e4fsprogs
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* addons: centos.mirror.cdnetworks.com
* base: centos.mirror.cdnetworks.com
* extras: centos.mirror.cdnetworks.com
* updates: centos.mirror.cdnetworks.com
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package e4fsprogs.i386 0:1.41.9-3.el5 set to be updated
--> Finished Dependency Resolution
Dependencies Resolved
================================================================================
Package Arch Version Repository Size
================================================================================
Installing:
e4fsprogs i386 1.41.9-3.el5 base 1.1 M
Transaction Summary
================================================================================
Install 1 Package(s)
Upgrade 0 Package(s)
Total download size: 1.1 M
Is this ok [y/N]: y
Downloading Packages:
e4fsprogs-1.41.9-3.el5.i386.rpm | 1.1 MB 00:00
Running rpm_check_debug
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
Installing : e4fsprogs 1/1
Installed:
e4fsprogs.i386 0:1.41.9-3.el5
Complete!
[root@localhost ~]# rpm -ql e4fsprogs
/etc/mke4fs.conf
/sbin/debuge4fs
/sbin/dumpe4fs
/sbin/e4fsck
/sbin/e4image
/sbin/e4label
/sbin/e4undo
/sbin/finde4fs
/sbin/fsck.ext4
/sbin/fsck.ext4dev
/sbin/mke4fs
/sbin/mkfs.ext4
/sbin/mkfs.ext4dev
/sbin/resize4fs
/sbin/tune4fs
/usr/share/doc/e4fsprogs-1.41.9
/usr/share/doc/e4fsprogs-1.41.9/README
/usr/share/doc/e4fsprogs-1.41.9/RELEASE-NOTES
/usr/share/locale/ca/LC_MESSAGES/e4fsprogs.mo
/usr/share/locale/cs/LC_MESSAGES/e4fsprogs.mo
/usr/share/locale/de/LC_MESSAGES/e4fsprogs.mo
/usr/share/locale/es/LC_MESSAGES/e4fsprogs.mo
/usr/share/locale/fr/LC_MESSAGES/e4fsprogs.mo
/usr/share/locale/id/LC_MESSAGES/e4fsprogs.mo
/usr/share/locale/it/LC_MESSAGES/e4fsprogs.mo
/usr/share/locale/nl/LC_MESSAGES/e4fsprogs.mo
/usr/share/locale/pl/LC_MESSAGES/e4fsprogs.mo
/usr/share/locale/sv/LC_MESSAGES/e4fsprogs.mo
/usr/share/locale/tr/LC_MESSAGES/e4fsprogs.mo
/usr/share/locale/vi/LC_MESSAGES/e4fsprogs.mo
/usr/share/locale/zh_CN/LC_MESSAGES/e4fsprogs.mo
/usr/share/man/man5/e4fsck.conf.5.gz
/usr/share/man/man5/mke4fs.conf.5.gz
/usr/share/man/man8/debuge4fs.8.gz
/usr/share/man/man8/dumpe4fs.8.gz
/usr/share/man/man8/e4fsck.8.gz
/usr/share/man/man8/e4image.8.gz
/usr/share/man/man8/e4label.8.gz
/usr/share/man/man8/e4undo.8.gz
/usr/share/man/man8/fsck.ext4.8.gz
/usr/share/man/man8/fsck.ext4dev.8.gz
/usr/share/man/man8/mke4fs.8.gz
/usr/share/man/man8/mkfs.ext4.8.gz
/usr/share/man/man8/mkfs.ext4dev.8.gz
/usr/share/man/man8/resize4fs.8.gz
/usr/share/man/man8/tune4fs.8.gz
