cogcritter (3614357) writes "In June of 2009, the dump/restore utilities version 0.4b42 for Linux's ext3 filesystem were released. This was the last version where incremental dumps could actually be used. A bug introduced in 0.4b43, one year later, causes restore to fail when processing an incremental backup unless, basically, no directory deletions occurred since the level 0 part of the backup set was taken.
The bug is certainly present in Debian Wheezy, and comments in Debian's defect tracking system suggest that the bug has permeated out into other distros as well.
How can Linux's backup/restore tools for its popular ext2/ext3 filesystem be broken for 3+ years, and nobody seems to care? Does nobody take backups? Or do they not use incremental backups? How many people are going to find themselves scrambling when they next NEED to restore a filesystem, and find themselves in possession of long-broken tools?
Just in case this article is where some hapless sysadmin ends up, the workaround is to go to dump.sf.net, go to the files section, pull down the 0.4b42 version and build it for yourself. For me, I think going forward I'm going to switch to filesystem mirroring using rsync."
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