帮助将RHEL5.1升级到CentOS 5.1

Question

我试图遵循从MigrationGuide (修改以反映我正在处理的非当前版本)的步骤，从RHEL5.1迁移到CentOS 5.1。我使用了以下命令：

# rpm -e --nodeps redhat-release-notes redhat-release yum-rhn-plugin redhat-logos
# rpm -ivh http://vault.centos.org/5.1/os/x86_64/CentOS/centos-release-5-1.0.el5.centos.1.x86_64.rpm http://vault.centos.org/5.1/os/x86_64/CentOS/centos-release-notes-5.1.0-2.x86_64.rpm
# yum update

这在yum update步骤中失败，错误声称e2fsprogs和内核之间存在冲突。我在下面列出了一个更详细的错误。

# yum -d7 upgrade kernel
Loading "installonlyn" plugin
Running "config" handler for "installonlyn" plugin
Yum Version: 3.0.1
COMMAND: yum -d7 
Installroot: /
Ext Commands:

   kernel
Setting up Upgrade Process
Setting up repositories
Reading repository metadata in from local files
Setting up Package Sacks
Reading Local RPMDB
Building updates object
Resolving Dependencies
1248192166.57
--> Populating transaction set with selected packages. Please wait.
Member: kernel.x86_64 0-2.6.18-128.2.1.el5 - u
kernel - 2.6.18-128.2.1.el5.x86_64 converted to install
Adding Package kernel - 2.6.18-128.2.1.el5.x86_64 in mode i
---> Package kernel.x86_64 0:2.6.18-128.2.1.el5 set to be installed
--> Running transaction check
# of Deps = 1

Dep Number: 1/1

--> Processing Conflict: kernel conflicts e2fsprogs < 1.37-4
TSINFO: Updating e2fsprogs - 1.39-20.el5.x86_64 to resolve conflict.
miss = 0
conf = 0
CheckDeps = 1
--> Restarting Dependency Resolution with new changes.
---> Loop Number: 2
Restarting Loop
--> Populating transaction set with selected packages. Please wait.
Member: kernel.x86_64 0-2.6.18-128.2.1.el5 - i
Member: e2fsprogs.x86_64 0-1.39-20.el5 - u
Adding Package e2fsprogs - 1.39-20.el5.x86_64 in mode u
---> Package e2fsprogs.x86_64 0:1.39-20.el5 set to be updated
--> Running transaction check
# of Deps = 3

Dep Number: 1/3

--> Processing Conflict: kernel conflicts e2fsprogs < 1.37-4
Error: No Package Matching kernel.x86_64

Answer 1

检查系统中是否存在32位版本(i386、i586、i686)，并在不需要时删除它。

Answer 2

正如HD说的，在较早版本的yum中有一个已知的bug，如果有两个或更多的冲突，单个包yum将修复第一个包，然后抛出第二个包(在这里，.i?86和.x86_64各有一个冲突)。

你可以用5.4得到一个测试版的yum，或者删除其中一个拱门.或者手动更新e2fsprogs (因此没有冲突)。