Red Hat Bugzilla – Bug 252400
RHEL4 U5: ia64 machine hang when DB starts using rac/nfs/hugepages
Last modified: 2013-08-05 21:43:38 EDT
Description of problem:
A startup of a database using RAC/NFS/Hugepages on ia64
will result in a machine deadlock.
Version-Release number of selected component (if applicable):
Everytime, but removing any of the 3 (RAC/NFS/Hugepages) and
the problem won't reproduce.
Steps to Reproduce:
Create a RAC DB on nfs storage, and allocate hugepages
for the SGA.
The sysrq-p data shows the following process on-CPU:
[<a000000200ab5010>] nfs_free_user_pages+0xd0/0x120 [nfs]
[<a000000200ab55a0>] nfs_direct_complete+0x40/0x140 [nfs]
[<a000000200ab5900>] nfs_direct_write_result+0x140/0x160 [nfs]
[<a000000200a77b20>] nfs_writeback_done+0x2e0/0x420 [nfs]
[<a000000200a7fa60>] nfs3_write_done+0xc0/0x100 [nfs]
[<a0000002007d91b0>] __rpc_execute+0x770/0xb40 [sunrpc]
[<a0000002007d9630>] __rpc_schedule+0xb0/0x240 [sunrpc]
[<a0000002007da5b0>] rpciod+0x2d0/0x9a0 [sunrpc]
The sysrq-t data shows a waiting D state oracle process
oracle D a000000100590c60 0 19029 1 19031 19027
[<a000000200ab54b0>] nfs_direct_wait+0x3f0/0x4a0 [nfs]
[<a000000200ab70a0>] nfs_file_direct_write+0xa00/0xee0 nfs]
[<a000000200a5b870>] nfs_file_write+0x1d0/0x2a0 [nfs]
Expect the server not to deadlock.
Customer Name: Mercado Libre
Oracle TAR: 5700008.993
Oracle Bug: 5520420
Redhat Issue Tracker: 123181
mainline fix info
Created attachment 161399 [details]
I reviewed the patch, it should be included in rhel 4.6 kernel
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release. Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products. This request is not yet committed for inclusion in an Update
This request was previously evaluated by Red Hat Product Management
for inclusion in the current Red Hat Enterprise Linux release, but
Red Hat was unable to resolve it in time. This request will be
reviewed for a future Red Hat Enterprise Linux release.
The patch has been posted, change status to post.., if the re-post is necessary
for the future release, please just let me know.
committed in stream U7 build 68.4. A test kernel with this patch is available
Hi Guys, I´m the customer (Mercadolibre), We are not migrating to RH4 cause
this bug, how can we do to have this patch released? Thanks
We just incorporated this patch into the RHEL 4.7 beta. Can you please download
the beta from RHN, test the patch and report your results here? Thank you!
Thanks , When 4.7 will be official? cause we have a migration from RH3 to RH4
stopped waiting for this patch? Do you think could we have this patch ported to
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 therefore 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.
RHEL 4.7 GA is now on RHN, which includes this patch.