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List:       linux-btrfs
Subject:    Re: Number of hard links limit
From:       Oystein Viggen <oysteivi () tihlde ! org>
Date:       2010-08-02 22:22:14
Message-ID: 0362zshcyx.fsf () msgid ! viggen ! net
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* [Roberto Ragusa] 

> That means it would not work for my backup server.
> At 4 backups per day, failure for filenames with 45 characters after just
> one year.

IIRC, the limit on hard links is per directory.  That is, if you put
each hard link into its own directory, there's basically no limit to the
amount of hard links you can make to one file.

Thus, many generations of backup with BackupPC shouldn't trigger the
problem, as each generation is stored in its own directory tree.  The
problem appears when your source data has many identical files in the
same directory, since these would be deduplicated as hard links to the
same file in the backup pool.

Øystein
-- 
This message was generated by a horde of attack elephants armed with PRNGs.

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