Why do you say fssnap has the same problem?

If it write locks the file system, it is only for a matter of seconds, as I 
recall.

Years ago, I used it on a daily basis to do ufsdumps of large fs'es.

Mark

On Jan 30, 2011, at 5:41 PM, Torrey McMahon wrote:

> On 1/30/2011 5:26 PM, Joerg Schilling wrote:
>> Richard Elling<richard.ell...@gmail.com>  wrote:
>> 
>>> ufsdump is the problem, not ufsrestore. If you ufsdump an active
>>> file system, there is no guarantee you can ufsrestore it. The only way
>>> to guarantee this is to keep the file system quiesced during the entire
>>> ufsdump.  Needless to say, this renders ufsdump useless for backup
>>> when the file system also needs to accommodate writes.
>> This is why there is a ufs snapshot utility.
> 
> You'll have the same problem. fssnap_ufs(1M) write locks the file system when 
> you run the lock command. See the notes section of the man page.
> 
> http://download.oracle.com/docs/cd/E19253-01/816-5166/6mbb1kq1p/index.html#Notes
> 
> 
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