Skip to content

Nimbus user tools can fail when var/ and services/ are on different partitions #65

labisso opened this Issue Jul 5, 2011 · 0 comments

2 participants

Nimbus member
labisso commented Jul 5, 2011

One known instance of this is in nimbus-edit-user when the gridmap file is edited. It first creates a modified copy of the gridmap in a tempfile (in $NIMBUS_HOME/var/) then deletes the existing file and uses os.rename() to move the new one in place. This fails if the source and destination are not on the same partition:

WARNING! user not found in /O=Auto/OU=FermiCloudNimbus/
Traceback (most recent call last):
 File "/opt/nimbus/libexec/", line 251, in <module>
   rc = main()
 File "/opt/nimbus/libexec/", line 242, in main
   edit_user(o, db)
 File "/opt/nimbus/libexec/", line 219, in edit_user
 File "/opt/nimbus/libexec/", line 144, in remove_gridmap
   os.rename(new_name, gmf)
OSError: [Errno 18] Invalid cross-device link

More importantly, this failure leaves the installation without a gridmap. Because there could be other failures, we should avoid deleting the gridmap and instead move the modified copy over top of it. I think shutil.move() will accomplish this (as well as allow cross-partition move).

I expect the same bug is in the other user tools as they also edit a gridmap. We should also check the group-authz file writing for this bug.

@buzztroll buzztroll added a commit that referenced this issue Jul 12, 2011
@buzztroll buzztroll patch for GH-65 374bb2e
@buzztroll buzztroll closed this Jul 13, 2011
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Something went wrong with that request. Please try again.