[Pvfs2-developers] I/O statemachines adaption for migration ?

[Murali Vilayannur]

Hi Julian,

> The client could store an array of error messages for all dfiles and make a
> tmp copy of the dfiles, thus at a restart the server could fetch the new
> dfiles and then for each ENOENT entry compare old with new dfile and if they
> are equal then the dfile is deleted thus the I/O invalid. Thus the client is
> able to figure out if the file is migrated and the ENOENT is a result of the
> migration or if the file is invalid.

Could you rephrase the above? I dont think I understand what it means..

> > Perhaps, you could have an entry in the old
> > server's dfile handle that explicitly says that this handle has been
> > migrated?
> That might be possible, however if it works without adding another keyval or
> whatever I would prefer that solution.

Oh Ok, I see.
Thanks,
Murali