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70 lines
2.7 KiB
Bash
70 lines
2.7 KiB
Bash
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#!/bin/bash
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# Migrate the package database and related directories from the long-time
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# (stupid) directory /var/log to /var/lib/pkgtools.
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#
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# The removed_* directories will remain under /var/log (but moved to
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# /var/log/pkgtools) as they contain log files of previous operations,
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# not anything that's actively used for package management. Also, the
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# removed_* directories can become quite large compared with the database.
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#
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# First, if it's just a case of missing symlinks, make them. Don't make them
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# if the directories exist in /var/log - we'll do a proper migration in that
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# case.
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for directory in packages scripts setup ; do
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if [ ! -L var/log/$directory -a ! -d var/log/$directory ]; then
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if [ -d var/lib/pkgtools/$directory ]; then
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# Make the symlink:
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( cd var/log ; ln -sf ../lib/pkgtools/$directory . )
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fi
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fi
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done
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for directory in removed_packages removed_scripts ; do
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if [ ! -L var/log/$directory -a ! -d var/log/$directory ]; then
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mkdir -p var/log/pkgtools/$directory
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( cd var/log ; ln -sf pkgtools/$directory . )
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fi
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if [ ! -L var/lib/pkgtools/$directory -a ! -d var/lib/pkgtools/$directory ]; then
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mkdir -p var/lib/pkgtools
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( cd var/lib/pkgtools ; ln -sf ../../log/pkgtools/$directory . )
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fi
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done
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# If at this point /var/log/packages is not a symlink, we need to do the
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# migration. We should already have a lock on being the only install script
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# that's currently running, but also get a lock on ldconfig to freeze any
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# other package operations that are happening now until after the migration
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# is complete.
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if [ ! -L var/log/packages ]; then
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if [ ! -d run/lock/pkgtools ]; then
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mkdir -p run/lock/pkgtools
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fi
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( flock 9 || exit 11
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# Don't migrate if tar is running, as there may still be package operations
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# going on in another process:
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while pidof tar 1> /dev/null 2> /dev/null ; do
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sleep 15
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done
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# Just to be a bit safer from race conditions:
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sleep 5
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# First, move the removed_* directories into a pkgtools subdirectory:
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mkdir -p var/log/pkgtools
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for directory in removed_packages removed_scripts ; do
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if [ ! -d var/log/pkgtools/$directory ]; then
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mkdir -p var/log/pkgtools/$directory
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# Move anything found in the old location, then remove it:
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mv var/log/$directory/* var/log/pkgtools/$directory 2> /dev/null
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rm -rf var/log/$directory
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# Make a symlink:
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( cd var/log ; ln -sf pkgtools/$directory . )
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fi
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done
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for directory in packages scripts setup ; do
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mkdir -p var/lib/pkgtools/$directory
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mv var/log/$directory/* var/lib/pkgtools/$directory 2> /dev/null
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rm -rf var/log/$directory
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( cd var/log
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ln -sf ../lib/pkgtools/$directory .
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)
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done
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) 9> run/lock/pkgtools/ldconfig.lock
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fi
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