Red Hat Bugzilla – Bug 177691
negative dentry caching causes long delay when dentry becomes valid
Last modified: 2007-11-30 17:07:09 EST
This is the same problem on RHEL 3 as the following RHEL 4 BZ:
175687 â autofs doesn't attempt to remount failed mount points
Negative dentrys are created when someone references a non-existent dentry. The
problem is that these persist for 60 seconds, so access to the dentry is blocked
even if it becomes valid during this time. This is a regression in U3/U7. The
proposed fix is to simply remove negative dentry caching from U3/U7. We plan to
consider adding it back in in a later update.
ACKed on rhkernel-list for U3 and U7. Accepted for inclusion in same by PM.
*** This bug has been marked as a duplicate of 177573 ***
A fix for this problem has just been committed to the RHEL3 U7
patch pool this evening (in kernel version 2.4.21-39.EL).
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.