xfsdump questions
Hello!
Is xfsdump an ancient relic or something recommended to new users (I have never seen anyone recommending it)? I gave it a try and found the incremental backups to be really fast!
How are incremental backups implemented? I saw that my inventory file is really small. Does it use some internal xfs metadata to detect changes? Is it resilient against all kinda renames and changing timestamps etc that a user might do? (I've previously used a backup system that broke when doing stuff like that)
Is it possible to backup (and restore) ctimes?
I read that the incremental backups are limited to a depth of 10. Are they intended to be used in a binary tree like fashion?
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Stevie Trujillo
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Quoted 5 lines · Stevie Trujillo
Hello!
Is xfsdump an ancient relic or something recommended to new users (I have never seen anyone recommending it)? I gave it a try and found the incremental backups to be really fast!
Still supported, still works, still used in production by lots of people.
Quoted 5 lines
How are incremental backups implemented? I saw that my inventory file is really small. Does it use some internal xfs metadata to detect changes? Is it resilient against all kinda renames and changing timestamps etc that a user might do? (I've previously used a backup system that broke when doing stuff like that)
It should detect renames and changing timestamps, etc. without any problems.
Quoted 1 line
Is it possible to backup (and restore) ctimes?
No.
Quoted 2 lines
I read that the incremental backups are limited to a depth of 10. Are they intended to be used in a binary tree like fashion?
In theory. Not sure anyone actually uses incremental dumps like that though, so you'd need to do a bunch of testing before deploying such a solution.
Cheers,
Dave.
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Dave Chinner [email protected] _______________________________________________ xfs mailing list [email protected] http://oss.sgi.com/mailman/listinfo/xfs
Thank you very much for your help!
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Stevie Trujillo
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