CRC data failed?

[Francisco Reyes]

Matthew Dillon writes:

It sounds like the filesystem image got corrupted, your best bet is
to wipe it completely (w/ newfs_hammer).
Only a handfull of files seem to have a problem, so for now I will leave as 
it. I guess I could try deleting those files.

 It is possible to recover the data to another filesystem (not in-place) 
if you need the data.
Will do. I will setup another VM. The original data was downloaded over DSL 
and took almost a week to download.

Checking the entire filesystem's CRCs can be done by issuing a 
mirror-read redirected to /dev/null and seeing if any errors pop
up.  This will wind up reading the entire disk and could take some
time depending on the size of the filesystem.
Where can I read about how to do that?

Also, is the crash possibly due to the fact it is in a VM? This is my first 
production test of DragonFly, so I am trying to understand what happened. If 
this was a sever with original data, I would be pretty worried about the 
data.