0003840: No login from nfs4 client with kernel 2.6.18-164.el5

(0009916)
JohnnyHughes (administrator)
2009-09-16 15:42

One thing to remember is that we are releasing this kernel early, but it is built against the 5.4 tree and not the 5.3 tree, so there may some irregularities until we get the full 5.4 tree released.

We did QA test this kernel against the 5.3 tree, but we did not test that aspect of it.

This may clear up after the entire 5.4 tree is released, please let us know if this works after the 5.4 release.

Since this kernel was also a security release, we wanted to get it out while the rest of the 5.4 tree is in testing.

(0009926)
dijuremo (reporter)
2009-09-17 11:57

This is a major bug on the kernel code for nfs in the 5.4 release kernel from Red Hat. Please take a look at:

https://bugzilla.redhat.com/show_bug.cgi?id=522163 [^]

Hopefully this can be patched for the CentOS 2.6.18-164.el5 prior to release.

If you try to use vi or some other program that uses the O_EXCL flag in open(2), you will see the problem.

The problem only affects the kernel on the Server. So if you have the server kernel patched, the clients can still have the unpatched kernel and things will work correctly.

(0009930)
herrold (administrator)
2009-09-17 17:00

dijuremo

the upstream bug current status is most troubling, and the centos team do not have a RHN account to do the suggested:

------- Comment #21 From Jeff Layton (jlayton@redhat.com) 2009-09-17 08:04:14 EDT (-) [reply] -------

(In reply to comment #19)
> This does not make any sense, RHEL5.5 is months away, and this is a major flaw
> that will prevent anybody from using the kernel in 5.4 as an nfs server. Are
> you not planning to release an updated kernel for 5.4 with the nfs fixes before
> 5.5?

I'm not opposed to seeing this fix ship sooner, but in order for that to happen
someone will need to open a support case and request a more immediate fix. If
you do so, please be sure to reference this BZ so that the support folks know
that this is a known problem and that there is a patch that seems to fix it.

=====================

It seems like a no brainer that they would do this in house, but it is their support operation and bugzilla to run as they wish. If you know someone with a RHN account with support entitlements, ...

As to a local patch in the [base] or [updates] streams -- I cannot see that CentOS would do that as it is too central -- perhaps CentOS Plus if Red Hat does not issue a repaired kernel ...

-- Russ herrold

(0009931)
toracat (developer)
2009-09-17 17:12

>As to a local patch in the [base] or [updates] streams -- I cannot see
>that CentOS would do that as it is too central -- perhaps CentOS Plus
>if Red Hat does not issue a repaired kernel ...

I am building centosplus kernels with the patch as I type this. Also, CentOS used to provide distro kernels with patches from people.centos.org. Maybe this can be done for this bug?

(0009932)
herrold (administrator)
2009-09-17 18:33

toracat

are you reading my mind again?

(0009933)
toracat (developer)
2009-09-17 19:44

Johnny,

If you (==CentOS) decide to offer the patched kernel somewhere, the cplus counterpart SRPM is ready in the usual place. So far, I have done a test-install on a 64-bit box.

(0009934)
dijuremo (reporter)
2009-09-17 20:06

I have asked some people from my campus who have support contracts to open tickets and other people who have reached the bugzilla entry have also opened the support tickets for the same issue, hopefully this will make something happen for the official red hat kernel release for 5.4

(0009952)
toracat (developer)
2009-09-19 01:53
edited on: 2009-09-19 01:56

Not sure if CentOS is going to provide the kernel with the fix. In the meantime, anyone wishing to give the patched centosplus kernel a try can download it from:

http://centos.toracat.org/kernel/centos5/centosplus-testing [^]

The name is kernel-2.6.18-164.bz522163.el5.ayplus.

(0009968)
toracat (developer)
2009-09-22 16:54

I am no longer able to access the upstream bugzilla at:

https://bugzilla.redhat.com/show_bug.cgi?id=522163 [^]

Does anyone know why they have made it private?

(0009969)
dijuremo (reporter)
2009-09-22 17:02

The bugzilla has been replaced by:

https://bugzilla.redhat.com/show_bug.cgi?id=524520 [^]

(0009995)
toracat (developer)
2009-09-30 19:23

A kernel update for 5.4 is out. I have updated the centosplus kernel with the nfsv4 patch accordingly. It's in the same place as before but the name is now:

kernel-2.6.18-164.2.1.el5.ayplus

(0010019)
dijuremo (reporter)
2009-10-02 17:01

Would you be interested in the RH provided Hotfix kernel srpm? If so where would I be able to upload it? It is about 72MB in size...

md5sum kernel-2.6.18-164.3.1.el5.src.rpm
8392f81e16c4e0d72ddcc3f593d449f4 kernel-2.6.18-164.3.1.el5.src.rpm

Our guys with support contracts have received all the files as a hotfix kernel and the release to everyone will follow in the first week of november.

(0010020)
toracat (developer)
2009-10-02 17:04

Is it distributable (can be made public) ?

(0010021)
dijuremo (reporter)
2009-10-02 17:11

Hmmm that is a very good question, I think that it being a src.rpm it would fall between the lines of the GPL, wouldn't it? Isn't that how you guys compile all the CentOS stuff?

(0010022)
dijuremo (reporter)
2009-10-02 17:16

rpm -qip kernel-2.6.18-164.3.1.el5.src.rpm
Name : kernel Relocations: (not relocatable)
Version : 2.6.18 Vendor: Red Hat, Inc.
Release : 164.3.1.el5 Build Date: Thu 01 Oct 2009 04:15:42 AM EDT
Install Date: (not installed) Build Host: ppc-004.build.bos.redhat.com
Group : System Environment/Kernel Source RPM: (none)
Size : 0 License: GPLv2
Signature : (none)
Packager : Red Hat, Inc. <http://bugzilla.redhat.com/bugzilla> [^]
URL : http://www.kernel.org/ [^]
Summary : The Linux kernel (the core of the Linux operating system)
Description :
The kernel package contains the Linux kernel (vmlinuz), the core of any
Linux operating system. The kernel handles the basic functions
of the operating system: memory allocation, process allocation, device
input and output, etc.

(0010023)
toracat (developer)
2009-10-02 17:57

Well, the patch itself is publicly available and it's fairly trivial for anyone to apply it to the current kernel. In that sense, whether that hotfix is distributable may not be relevant because CentOS devs can build the patched kernel if they so wish. It's rather a question of whether or not they have the time and resources at this moment.

(0010226)
toracat (developer)
2009-10-31 19:11

The patch referenced in this bug tracker is now in the centosplus kernel 2.6.18-164.2.1.el5.centos.plus.

Notes
(0009916) JohnnyHughes (administrator) 2009-09-16 15:42	One thing to remember is that we are releasing this kernel early, but it is built against the 5.4 tree and not the 5.3 tree, so there may some irregularities until we get the full 5.4 tree released. We did QA test this kernel against the 5.3 tree, but we did not test that aspect of it. This may clear up after the entire 5.4 tree is released, please let us know if this works after the 5.4 release. Since this kernel was also a security release, we wanted to get it out while the rest of the 5.4 tree is in testing.

(0009926) dijuremo (reporter) 2009-09-17 11:57	This is a major bug on the kernel code for nfs in the 5.4 release kernel from Red Hat. Please take a look at: https://bugzilla.redhat.com/show_bug.cgi?id=522163 [^] Hopefully this can be patched for the CentOS 2.6.18-164.el5 prior to release. If you try to use vi or some other program that uses the O_EXCL flag in open(2), you will see the problem. The problem only affects the kernel on the Server. So if you have the server kernel patched, the clients can still have the unpatched kernel and things will work correctly.

(0009930) herrold (administrator) 2009-09-17 17:00	dijuremo the upstream bug current status is most troubling, and the centos team do not have a RHN account to do the suggested: ------- Comment #21 From Jeff Layton (jlayton@redhat.com) 2009-09-17 08:04:14 EDT (-) [reply] ------- (In reply to comment #19) > This does not make any sense, RHEL5.5 is months away, and this is a major flaw > that will prevent anybody from using the kernel in 5.4 as an nfs server. Are > you not planning to release an updated kernel for 5.4 with the nfs fixes before > 5.5? I'm not opposed to seeing this fix ship sooner, but in order for that to happen someone will need to open a support case and request a more immediate fix. If you do so, please be sure to reference this BZ so that the support folks know that this is a known problem and that there is a patch that seems to fix it. ===================== It seems like a no brainer that they would do this in house, but it is their support operation and bugzilla to run as they wish. If you know someone with a RHN account with support entitlements, ... As to a local patch in the [base] or [updates] streams -- I cannot see that CentOS would do that as it is too central -- perhaps CentOS Plus if Red Hat does not issue a repaired kernel ... -- Russ herrold

(0009931) toracat (developer) 2009-09-17 17:12	>As to a local patch in the [base] or [updates] streams -- I cannot see >that CentOS would do that as it is too central -- perhaps CentOS Plus >if Red Hat does not issue a repaired kernel ... I am building centosplus kernels with the patch as I type this. Also, CentOS used to provide distro kernels with patches from people.centos.org. Maybe this can be done for this bug?

(0009932) herrold (administrator) 2009-09-17 18:33	toracat are you reading my mind again?

(0009933) toracat (developer) 2009-09-17 19:44	Johnny, If you (==CentOS) decide to offer the patched kernel somewhere, the cplus counterpart SRPM is ready in the usual place. So far, I have done a test-install on a 64-bit box.

(0009934) dijuremo (reporter) 2009-09-17 20:06	I have asked some people from my campus who have support contracts to open tickets and other people who have reached the bugzilla entry have also opened the support tickets for the same issue, hopefully this will make something happen for the official red hat kernel release for 5.4

(0009952) toracat (developer) 2009-09-19 01:53 edited on: 2009-09-19 01:56	Not sure if CentOS is going to provide the kernel with the fix. In the meantime, anyone wishing to give the patched centosplus kernel a try can download it from: http://centos.toracat.org/kernel/centos5/centosplus-testing [^] The name is kernel-2.6.18-164.bz522163.el5.ayplus.

(0009968) toracat (developer) 2009-09-22 16:54	I am no longer able to access the upstream bugzilla at: https://bugzilla.redhat.com/show_bug.cgi?id=522163 [^] Does anyone know why they have made it private?

(0009969) dijuremo (reporter) 2009-09-22 17:02	The bugzilla has been replaced by: https://bugzilla.redhat.com/show_bug.cgi?id=524520 [^]

(0009995) toracat (developer) 2009-09-30 19:23	A kernel update for 5.4 is out. I have updated the centosplus kernel with the nfsv4 patch accordingly. It's in the same place as before but the name is now: kernel-2.6.18-164.2.1.el5.ayplus

(0010019) dijuremo (reporter) 2009-10-02 17:01	Would you be interested in the RH provided Hotfix kernel srpm? If so where would I be able to upload it? It is about 72MB in size... md5sum kernel-2.6.18-164.3.1.el5.src.rpm 8392f81e16c4e0d72ddcc3f593d449f4 kernel-2.6.18-164.3.1.el5.src.rpm Our guys with support contracts have received all the files as a hotfix kernel and the release to everyone will follow in the first week of november.

(0010020) toracat (developer) 2009-10-02 17:04	Is it distributable (can be made public) ?

(0010021) dijuremo (reporter) 2009-10-02 17:11	Hmmm that is a very good question, I think that it being a src.rpm it would fall between the lines of the GPL, wouldn't it? Isn't that how you guys compile all the CentOS stuff?

(0010022) dijuremo (reporter) 2009-10-02 17:16	rpm -qip kernel-2.6.18-164.3.1.el5.src.rpm Name : kernel Relocations: (not relocatable) Version : 2.6.18 Vendor: Red Hat, Inc. Release : 164.3.1.el5 Build Date: Thu 01 Oct 2009 04:15:42 AM EDT Install Date: (not installed) Build Host: ppc-004.build.bos.redhat.com Group : System Environment/Kernel Source RPM: (none) Size : 0 License: GPLv2 Signature : (none) Packager : Red Hat, Inc. <http://bugzilla.redhat.com/bugzilla> [^] URL : http://www.kernel.org/ [^] Summary : The Linux kernel (the core of the Linux operating system) Description : The kernel package contains the Linux kernel (vmlinuz), the core of any Linux operating system. The kernel handles the basic functions of the operating system: memory allocation, process allocation, device input and output, etc.

(0010023) toracat (developer) 2009-10-02 17:57	Well, the patch itself is publicly available and it's fairly trivial for anyone to apply it to the current kernel. In that sense, whether that hotfix is distributable may not be relevant because CentOS devs can build the patched kernel if they so wish. It's rather a question of whether or not they have the time and resources at this moment.

(0010226) toracat (developer) 2009-10-31 19:11	The patch referenced in this bug tracker is now in the centosplus kernel 2.6.18-164.2.1.el5.centos.plus.

Issue History
Date Modified	Username	Field	Change
2009-09-16 14:39	daily-planet	New Issue
2009-09-16 15:42	JohnnyHughes	Note Added: 0009916
2009-09-17 11:57	dijuremo	Note Added: 0009926
2009-09-17 17:00	herrold	Note Added: 0009930
2009-09-17 17:12	toracat	Note Added: 0009931
2009-09-17 18:33	herrold	Note Added: 0009932
2009-09-17 19:44	toracat	Note Added: 0009933
2009-09-17 20:06	dijuremo	Note Added: 0009934
2009-09-19 01:53	toracat	Note Added: 0009952
2009-09-19 01:56	toracat	Note Edited: 0009952
2009-09-22 16:54	toracat	Note Added: 0009968
2009-09-22 17:02	dijuremo	Note Added: 0009969
2009-09-30 19:23	toracat	Note Added: 0009995
2009-10-02 17:01	dijuremo	Note Added: 0010019
2009-10-02 17:04	toracat	Note Added: 0010020
2009-10-02 17:11	dijuremo	Note Added: 0010021
2009-10-02 17:16	dijuremo	Note Added: 0010022
2009-10-02 17:57	toracat	Note Added: 0010023
2009-10-31 19:11	toracat	Note Added: 0010226

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