Difference between revisions of "Rollback"
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| − | = Configuring the System to save rollback information = | + | = RPM rollbacks = |
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| + | == Configuring the System to save rollback information == | ||
1. Configure yum to save rollback information. | 1. Configure yum to save rollback information. | ||
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to /etc/rpm/macros. | to /etc/rpm/macros. | ||
| − | = Using rollbacks = | + | == Using rollbacks == |
Back out an updates, which you can do with either rollback, or oldpackages | Back out an updates, which you can do with either rollback, or oldpackages | ||
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rpm -Uhv --rollback '9:00 am' | rpm -Uhv --rollback '9:00 am' | ||
| + | |||
rpm -Uhv --rollback '4 hours ago' | rpm -Uhv --rollback '4 hours ago' | ||
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rpm -Uhv --rollback 'december 25'. | rpm -Uhv --rollback 'december 25'. | ||
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Keep in mind this will only let you rollback what can be rolled back. Some OS updates are not reversible, for example, if you did an upgrade of mysql that changed your tables you would not be able to roll back this way. | Keep in mind this will only let you rollback what can be rolled back. Some OS updates are not reversible, for example, if you did an upgrade of mysql that changed your tables you would not be able to roll back this way. | ||
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| + | = Yum Rollbacks = | ||
| + | |||
| + | Yum has a command "downgrade" that can be used to downgrade or rollback and installation or upgrade. "downgrade" is very easy to use if the package does not have any dependencies which effect the downgrade. | ||
| + | |||
| + | To rollback a single package, use this command: | ||
| + | |||
| + | |||
| + | yum downgrade package | ||
| + | |||
| + | "yum downgrade" does not resolve dependencies automatically, which means if you have dependencies, you will have to do this manually. Example: | ||
| + | |||
| + | |||
| + | yum downgrade foo | ||
| + | |||
| + | Setting up Downgrade Process | ||
| + | Resolving Dependencies | ||
| + | --> Running transaction check | ||
| + | ---> Package foo.i686 0:1.1.11-1.fc13 set to be downgraded | ||
| + | ---> Package foo.i686 0:1.1.11-1.fc14 set to be erased | ||
| + | Error: Package: foo-devel-3.6.23-1.fc14.i686 (@rawhide/12) | ||
| + | Requires: foo = 1.1.11-1.fc14 | ||
| + | Removing: foo-1.1.11-1.fc14.i686 (@rawhide/12) | ||
| + | foo = 1.1.11-1.fc14 | ||
| + | Downgraded By: foo-1.1.11-1.fc13.i686 (fedora) | ||
| + | foo = 1.1.11-1.fc13 | ||
| + | You could try using --skip-broken to work around the problem | ||
| + | |||
| + | The "foo" package depends on foo-devel package, so both foo-devel and foo have to be downgraded: | ||
| + | |||
| + | yum downgrade foo foo-devel | ||
Latest revision as of 15:35, 19 March 2011
Contents |
[edit] RPM rollbacks
[edit] Configuring the System to save rollback information
1. Configure yum to save rollback information.
Add the line
tsflags=repackage*
to /etc/yum.conf.
2. Configure command-line rpm to save rollback information:
Add the line:
%_repackage_all_erasures 1
to /etc/rpm/macros.
[edit] Using rollbacks
Back out an updates, which you can do with either rollback, or oldpackages
Method 1:
To rollback to a previous state, perform an rpm update with the --rollback option followed by a date/time specifier.
Examples:
rpm -Uhv --rollback '9:00 am'
rpm -Uhv --rollback '4 hours ago'
rpm -Uhv --rollback 'december 25'.
Method 2:
Use the "oldpackage" option to manually force a specific RPM:
rpm -Uvh --oldpackage foo-1-1.i386.rpm
Keep in mind this will only let you rollback what can be rolled back. Some OS updates are not reversible, for example, if you did an upgrade of mysql that changed your tables you would not be able to roll back this way.
[edit] Yum Rollbacks
Yum has a command "downgrade" that can be used to downgrade or rollback and installation or upgrade. "downgrade" is very easy to use if the package does not have any dependencies which effect the downgrade.
To rollback a single package, use this command:
yum downgrade package
"yum downgrade" does not resolve dependencies automatically, which means if you have dependencies, you will have to do this manually. Example:
yum downgrade foo Setting up Downgrade Process Resolving Dependencies --> Running transaction check ---> Package foo.i686 0:1.1.11-1.fc13 set to be downgraded ---> Package foo.i686 0:1.1.11-1.fc14 set to be erased Error: Package: foo-devel-3.6.23-1.fc14.i686 (@rawhide/12) Requires: foo = 1.1.11-1.fc14 Removing: foo-1.1.11-1.fc14.i686 (@rawhide/12) foo = 1.1.11-1.fc14 Downgraded By: foo-1.1.11-1.fc13.i686 (fedora) foo = 1.1.11-1.fc13 You could try using --skip-broken to work around the problem
The "foo" package depends on foo-devel package, so both foo-devel and foo have to be downgraded:
yum downgrade foo foo-devel
