[BUG][cryo] Create file on restart ?

[sukadev at us.ibm.com]

Serge E. Hallyn [serue at us.ibm.com] wrote:
| Quoting sukadev at us.ibm.com (sukadev at us.ibm.com):
| > Serge E. Hallyn [serue at us.ibm.com] wrote:
| > | Quoting sukadev at us.ibm.com (sukadev at us.ibm.com):
| > | > 
| > | > cryo does not (cannot ?) recreate files if the application created
| > | 
| > | I think that's for the best.
| > | 
| > | Don't you?
| > 
| > I can understand that configuration or data files should exist, but
| > not sure about temporary or log files that an application created
| > upon start-up and expects to be present. Should the admin find
| > out about them and create them by hand before restart ?
| 
| I think the admin should have set the destination environment such that
| the task is restarted in the same network fs in the same directory, with
| no files having been deleted.

or new files created ? For instance if the application was checkpointed
before it created a temporary file with O_EXCL flag, that temporary
file must not exist when restarting ?

| 
| Am I wrong?

So we take a snapshot of the FS and checkpoint the application. Do they
need to be atomic ? 

Eitherway, I withdraw the bug :-)