support quality (Re: dump | restore fails: unknown tape headertype 1853384566)

Peter Schuller peter.schuller at infidyne.com
Thu Mar 26 07:01:34 PDT 2009


> >Yes, but it's for running a dump on a (L)ive FS and just spits out warnings
> >to that effect and has no effect on solving the problem(s).
> 
> Unless the filesystem is very busy, you will get your data backed up. 
> If you have things like databases, I still would not trust 
> snapshots.  

Uh. If backuping up a live database from a snapshot is not
trustworthy, either the snapshot facility is broken or the database is
broken (i.e., not crash-safe to begin with).

That said there are plenty of other reasos to use proper dump tools
(data portability, confirming the ability to actually read all rows
from a table, using a more often exercised code path and perhaps less
likely to have edge case bugs, etc).

-- 
/ Peter Schuller

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