| 2014-06-07 14:34:48 |
My Karlsson |
bug |
|
|
added bug |
| 2014-06-07 14:55:46 |
My Karlsson |
summary |
Unable to mount NFS shares |
Long timeout when mounting NFS shares |
|
| 2014-06-07 14:55:46 |
My Karlsson |
description |
Summary:
After upgrading the kernel on Ubuntu 14.04 to 3.13.0-29-generic I found that I was unable to mount NFS shares from other Ubuntu machines.
How to reproduce:
1. Install Ubuntu 14.04 on two machines. A minimal server install should be fine. One will act as a server, the other as a client.
2. Upgrade the kernel on the client machine to at least 3.13.0-27-generic.
3. Install the nfs-kernel-server package on the server.
4. Add a directory to /etc/exports and run service nfs-kernel-server start.
5. Install the nfs-common package on the client.
6. Attempt to mount the shared directory on the client.
Expected result:
The shared directory should be mounted on the client.
Actual result:
The mount command hangs. Further NFS mounts are not possible.
Regression:
I have been able to reproduce the problem on clients running Linux 3.13.0-27-generic and later. The problem is not reproducable on clients running Linux 3.13.0-24-generic. The problem is reproducable no matter which kernel version is used on the server.
Tested client kernel versions:
Linux 3.13.0-29-generic #53-Ubuntu FAIL
Linux 3.13.0-27-generic #50-Ubuntu FAIL
Linux 3.13.0-24-generic #47-Ubuntu OK
Tested server kernel versions:
Linux 3.13.0-29-generic #53-Ubuntu OK
Linux 3.13.0-27-generic #50-Ubuntu OK
Linux 3.13.0-24-generic #47-Ubuntu OK
lsb_release -rd:
Description: Ubuntu 14.04 LTS
Release: 14.04
apt-cache policy linux-image-generic:
linux-image-generic:
Installed: (none)
Candidate: 3.13.0.29.35
Version table:
3.13.0.29.35 0
500 http://se.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
500 http://security.ubuntu.com/ubuntu/ trusty-security/main amd64 Packages
3.13.0.24.28 0
500 http://se.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-29-generic 3.13.0-29.53
ProcVersionSignature: Ubuntu 3.13.0-29.53-generic 3.13.11.2
Uname: Linux 3.13.0-29-generic x86_64
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Jun 7 16:26 seq
crw-rw---- 1 root audio 116, 33 Jun 7 16:26 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: [Errno 2] No such file or directory: 'fuser'
CRDA: Error: [Errno 2] No such file or directory: 'iw'
Date: Sat Jun 7 16:30:02 2014
HibernationDevice: RESUME=UUID=9c13108b-d40a-4881-b563-c477ed2e6804
InstallationDate: Installed on 2014-06-07 (0 days ago)
InstallationMedia: Ubuntu-Server 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
Lsusb:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: QEMU Standard PC (i440FX + PIIX, 1996)
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-29-generic root=UUID=9068010d-8332-47c8-ae62-ccc62ca57290 ro
RelatedPackageVersions:
linux-restricted-modules-3.13.0-29-generic N/A
linux-backports-modules-3.13.0-29-generic N/A
linux-firmware N/A
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/01/2011
dmi.bios.vendor: Bochs
dmi.bios.version: Bochs
dmi.chassis.type: 1
dmi.chassis.vendor: Bochs
dmi.modalias: dmi:bvnBochs:bvrBochs:bd01/01/2011:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-2.0:cvnBochs:ct1:cvr:
dmi.product.name: Standard PC (i440FX + PIIX, 1996)
dmi.product.version: pc-i440fx-2.0
dmi.sys.vendor: QEMU |
Summary:
After upgrading the kernel on Ubuntu 14.04 to 3.13.0-29-generic I found it can take considerable longer time to mount NFS shares.
How to reproduce:
1. Install Ubuntu 14.04 on two machines. A minimal server install should be fine. One will act as a server, the other as a client.
2. Upgrade the kernel on the client machine to at least 3.13.0-27-generic.
3. Install the nfs-kernel-server package on the server.
4. Add a directory to /etc/exports and run service nfs-kernel-server start.
5. Install the nfs-common package on the client.
6. Attempt to mount the shared directory on the client.
Expected result:
The shared directory should be mounted on the client more or less immediately
Actual result:
The mount command hangs and eventually completes. In this test case it takes 16 seconds consistently. On a production machine where the problem was first discovered the time is considerably longer.
Regression:
I have been able to reproduce the problem on clients running Linux 3.13.0-27-generic and later. The problem is not reproducable on clients running Linux 3.13.0-24-generic. The problem is reproducable no matter which kernel version is used on the server.
Tested client kernel versions:
Linux 3.13.0-29-generic #53-Ubuntu FAIL
Linux 3.13.0-27-generic #50-Ubuntu FAIL
Linux 3.13.0-24-generic #47-Ubuntu OK
Tested server kernel versions:
Linux 3.13.0-29-generic #53-Ubuntu OK
Linux 3.13.0-27-generic #50-Ubuntu OK
Linux 3.13.0-24-generic #47-Ubuntu OK
lsb_release -rd:
Description: Ubuntu 14.04 LTS
Release: 14.04
apt-cache policy linux-image-generic:
linux-image-generic:
Installed: (none)
Candidate: 3.13.0.29.35
Version table:
3.13.0.29.35 0
500 http://se.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
500 http://security.ubuntu.com/ubuntu/ trusty-security/main amd64 Packages
3.13.0.24.28 0
500 http://se.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-29-generic 3.13.0-29.53
ProcVersionSignature: Ubuntu 3.13.0-29.53-generic 3.13.11.2
Uname: Linux 3.13.0-29-generic x86_64
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Jun 7 16:26 seq
crw-rw---- 1 root audio 116, 33 Jun 7 16:26 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: [Errno 2] No such file or directory: 'fuser'
CRDA: Error: [Errno 2] No such file or directory: 'iw'
Date: Sat Jun 7 16:30:02 2014
HibernationDevice: RESUME=UUID=9c13108b-d40a-4881-b563-c477ed2e6804
InstallationDate: Installed on 2014-06-07 (0 days ago)
InstallationMedia: Ubuntu-Server 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
Lsusb:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: QEMU Standard PC (i440FX + PIIX, 1996)
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-29-generic root=UUID=9068010d-8332-47c8-ae62-ccc62ca57290 ro
RelatedPackageVersions:
linux-restricted-modules-3.13.0-29-generic N/A
linux-backports-modules-3.13.0-29-generic N/A
linux-firmware N/A
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/01/2011
dmi.bios.vendor: Bochs
dmi.bios.version: Bochs
dmi.chassis.type: 1
dmi.chassis.vendor: Bochs
dmi.modalias: dmi:bvnBochs:bvrBochs:bd01/01/2011:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-2.0:cvnBochs:ct1:cvr:
dmi.product.name: Standard PC (i440FX + PIIX, 1996)
dmi.product.version: pc-i440fx-2.0
dmi.sys.vendor: QEMU |
|
| 2014-06-07 15:00:10 |
Brad Figg |
linux (Ubuntu): status |
New |
Confirmed |
|
| 2014-06-07 15:05:51 |
My Karlsson |
description |
Summary:
After upgrading the kernel on Ubuntu 14.04 to 3.13.0-29-generic I found it can take considerable longer time to mount NFS shares.
How to reproduce:
1. Install Ubuntu 14.04 on two machines. A minimal server install should be fine. One will act as a server, the other as a client.
2. Upgrade the kernel on the client machine to at least 3.13.0-27-generic.
3. Install the nfs-kernel-server package on the server.
4. Add a directory to /etc/exports and run service nfs-kernel-server start.
5. Install the nfs-common package on the client.
6. Attempt to mount the shared directory on the client.
Expected result:
The shared directory should be mounted on the client more or less immediately
Actual result:
The mount command hangs and eventually completes. In this test case it takes 16 seconds consistently. On a production machine where the problem was first discovered the time is considerably longer.
Regression:
I have been able to reproduce the problem on clients running Linux 3.13.0-27-generic and later. The problem is not reproducable on clients running Linux 3.13.0-24-generic. The problem is reproducable no matter which kernel version is used on the server.
Tested client kernel versions:
Linux 3.13.0-29-generic #53-Ubuntu FAIL
Linux 3.13.0-27-generic #50-Ubuntu FAIL
Linux 3.13.0-24-generic #47-Ubuntu OK
Tested server kernel versions:
Linux 3.13.0-29-generic #53-Ubuntu OK
Linux 3.13.0-27-generic #50-Ubuntu OK
Linux 3.13.0-24-generic #47-Ubuntu OK
lsb_release -rd:
Description: Ubuntu 14.04 LTS
Release: 14.04
apt-cache policy linux-image-generic:
linux-image-generic:
Installed: (none)
Candidate: 3.13.0.29.35
Version table:
3.13.0.29.35 0
500 http://se.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
500 http://security.ubuntu.com/ubuntu/ trusty-security/main amd64 Packages
3.13.0.24.28 0
500 http://se.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-29-generic 3.13.0-29.53
ProcVersionSignature: Ubuntu 3.13.0-29.53-generic 3.13.11.2
Uname: Linux 3.13.0-29-generic x86_64
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Jun 7 16:26 seq
crw-rw---- 1 root audio 116, 33 Jun 7 16:26 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: [Errno 2] No such file or directory: 'fuser'
CRDA: Error: [Errno 2] No such file or directory: 'iw'
Date: Sat Jun 7 16:30:02 2014
HibernationDevice: RESUME=UUID=9c13108b-d40a-4881-b563-c477ed2e6804
InstallationDate: Installed on 2014-06-07 (0 days ago)
InstallationMedia: Ubuntu-Server 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
Lsusb:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: QEMU Standard PC (i440FX + PIIX, 1996)
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-29-generic root=UUID=9068010d-8332-47c8-ae62-ccc62ca57290 ro
RelatedPackageVersions:
linux-restricted-modules-3.13.0-29-generic N/A
linux-backports-modules-3.13.0-29-generic N/A
linux-firmware N/A
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/01/2011
dmi.bios.vendor: Bochs
dmi.bios.version: Bochs
dmi.chassis.type: 1
dmi.chassis.vendor: Bochs
dmi.modalias: dmi:bvnBochs:bvrBochs:bd01/01/2011:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-2.0:cvnBochs:ct1:cvr:
dmi.product.name: Standard PC (i440FX + PIIX, 1996)
dmi.product.version: pc-i440fx-2.0
dmi.sys.vendor: QEMU |
Summary:
After upgrading the kernel on Ubuntu 14.04 to 3.13.0-29-generic I found that it can take a considerable longer amount of time to mount NFS shares.
How to reproduce:
1. Install Ubuntu 14.04 on two machines. A minimal server install should be fine. One will act as a server, the other as a client.
2. Upgrade the kernel on the client machine to at least 3.13.0-27-generic.
3. Install the nfs-kernel-server package on the server.
4. Add a directory to /etc/exports and run service nfs-kernel-server start.
5. Install the nfs-common package on the client.
6. Attempt to mount the shared directory on the client.
Expected result:
The shared directory should be mounted on the client more or less immediately.
Actual result:
The mount command hangs and eventually completes. In this test case it takes 16 seconds consistently. On a production machine where the problem was first discovered the time is considerably longer and essentially makes it impossible to mount NFS shares.
Regression:
I have been able to reproduce the problem on clients running Linux 3.13.0-27-generic and later. The problem is not reproducible on clients running Linux 3.13.0-24-generic. The problem is reproducible no matter which kernel version is used on the server.
Tested client kernel versions:
Linux 3.13.0-29-generic #53-Ubuntu FAIL
Linux 3.13.0-27-generic #50-Ubuntu FAIL
Linux 3.13.0-24-generic #47-Ubuntu OK
Tested server kernel versions:
Linux 3.13.0-29-generic #53-Ubuntu OK
Linux 3.13.0-27-generic #50-Ubuntu OK
Linux 3.13.0-24-generic #47-Ubuntu OK
lsb_release -rd:
Description: Ubuntu 14.04 LTS
Release: 14.04
apt-cache policy linux-image-generic:
linux-image-generic:
Installed: (none)
Candidate: 3.13.0.29.35
Version table:
3.13.0.29.35 0
500 http://se.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
500 http://security.ubuntu.com/ubuntu/ trusty-security/main amd64 Packages
3.13.0.24.28 0
500 http://se.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-29-generic 3.13.0-29.53
ProcVersionSignature: Ubuntu 3.13.0-29.53-generic 3.13.11.2
Uname: Linux 3.13.0-29-generic x86_64
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Jun 7 16:26 seq
crw-rw---- 1 root audio 116, 33 Jun 7 16:26 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: [Errno 2] No such file or directory: 'fuser'
CRDA: Error: [Errno 2] No such file or directory: 'iw'
Date: Sat Jun 7 16:30:02 2014
HibernationDevice: RESUME=UUID=9c13108b-d40a-4881-b563-c477ed2e6804
InstallationDate: Installed on 2014-06-07 (0 days ago)
InstallationMedia: Ubuntu-Server 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
Lsusb:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: QEMU Standard PC (i440FX + PIIX, 1996)
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-29-generic root=UUID=9068010d-8332-47c8-ae62-ccc62ca57290 ro
RelatedPackageVersions:
linux-restricted-modules-3.13.0-29-generic N/A
linux-backports-modules-3.13.0-29-generic N/A
linux-firmware N/A
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/01/2011
dmi.bios.vendor: Bochs
dmi.bios.version: Bochs
dmi.chassis.type: 1
dmi.chassis.vendor: Bochs
dmi.modalias: dmi:bvnBochs:bvrBochs:bd01/01/2011:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-2.0:cvnBochs:ct1:cvr:
dmi.product.name: Standard PC (i440FX + PIIX, 1996)
dmi.product.version: pc-i440fx-2.0
dmi.sys.vendor: QEMU |
|
| 2014-06-07 15:11:25 |
My Karlsson |
description |
Summary:
After upgrading the kernel on Ubuntu 14.04 to 3.13.0-29-generic I found that it can take a considerable longer amount of time to mount NFS shares.
How to reproduce:
1. Install Ubuntu 14.04 on two machines. A minimal server install should be fine. One will act as a server, the other as a client.
2. Upgrade the kernel on the client machine to at least 3.13.0-27-generic.
3. Install the nfs-kernel-server package on the server.
4. Add a directory to /etc/exports and run service nfs-kernel-server start.
5. Install the nfs-common package on the client.
6. Attempt to mount the shared directory on the client.
Expected result:
The shared directory should be mounted on the client more or less immediately.
Actual result:
The mount command hangs and eventually completes. In this test case it takes 16 seconds consistently. On a production machine where the problem was first discovered the time is considerably longer and essentially makes it impossible to mount NFS shares.
Regression:
I have been able to reproduce the problem on clients running Linux 3.13.0-27-generic and later. The problem is not reproducible on clients running Linux 3.13.0-24-generic. The problem is reproducible no matter which kernel version is used on the server.
Tested client kernel versions:
Linux 3.13.0-29-generic #53-Ubuntu FAIL
Linux 3.13.0-27-generic #50-Ubuntu FAIL
Linux 3.13.0-24-generic #47-Ubuntu OK
Tested server kernel versions:
Linux 3.13.0-29-generic #53-Ubuntu OK
Linux 3.13.0-27-generic #50-Ubuntu OK
Linux 3.13.0-24-generic #47-Ubuntu OK
lsb_release -rd:
Description: Ubuntu 14.04 LTS
Release: 14.04
apt-cache policy linux-image-generic:
linux-image-generic:
Installed: (none)
Candidate: 3.13.0.29.35
Version table:
3.13.0.29.35 0
500 http://se.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
500 http://security.ubuntu.com/ubuntu/ trusty-security/main amd64 Packages
3.13.0.24.28 0
500 http://se.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-29-generic 3.13.0-29.53
ProcVersionSignature: Ubuntu 3.13.0-29.53-generic 3.13.11.2
Uname: Linux 3.13.0-29-generic x86_64
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Jun 7 16:26 seq
crw-rw---- 1 root audio 116, 33 Jun 7 16:26 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: [Errno 2] No such file or directory: 'fuser'
CRDA: Error: [Errno 2] No such file or directory: 'iw'
Date: Sat Jun 7 16:30:02 2014
HibernationDevice: RESUME=UUID=9c13108b-d40a-4881-b563-c477ed2e6804
InstallationDate: Installed on 2014-06-07 (0 days ago)
InstallationMedia: Ubuntu-Server 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
Lsusb:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: QEMU Standard PC (i440FX + PIIX, 1996)
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-29-generic root=UUID=9068010d-8332-47c8-ae62-ccc62ca57290 ro
RelatedPackageVersions:
linux-restricted-modules-3.13.0-29-generic N/A
linux-backports-modules-3.13.0-29-generic N/A
linux-firmware N/A
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/01/2011
dmi.bios.vendor: Bochs
dmi.bios.version: Bochs
dmi.chassis.type: 1
dmi.chassis.vendor: Bochs
dmi.modalias: dmi:bvnBochs:bvrBochs:bd01/01/2011:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-2.0:cvnBochs:ct1:cvr:
dmi.product.name: Standard PC (i440FX + PIIX, 1996)
dmi.product.version: pc-i440fx-2.0
dmi.sys.vendor: QEMU |
Summary:
After upgrading the kernel on Ubuntu 14.04 to 3.13.0-29-generic I found that it can take a considerably longer amount of time to mount NFS shares.
How to reproduce:
1. Install Ubuntu 14.04 on two machines. A minimal server install should be fine. One will act as a server, the other as a client.
2. Upgrade the kernel on the client machine to at least 3.13.0-27-generic.
3. Install the nfs-kernel-server package on the server.
4. Add a directory to /etc/exports and run service nfs-kernel-server start.
5. Install the nfs-common package on the client.
6. Attempt to mount the shared directory on the client.
Expected result:
The shared directory should be mounted on the client more or less immediately.
Actual result:
The mount command hangs and eventually completes. In this test case it takes 16 seconds consistently. On a production machine where the problem was first discovered the time is considerably longer and essentially makes it impossible to mount NFS shares.
Regression:
I have been able to reproduce the problem on clients running Linux 3.13.0-27-generic and later. The problem is not reproducible on clients running Linux 3.13.0-24-generic. The problem is reproducible no matter which kernel version is used on the server.
Tested client kernel versions:
Linux 3.13.0-29-generic #53-Ubuntu FAIL
Linux 3.13.0-27-generic #50-Ubuntu FAIL
Linux 3.13.0-24-generic #47-Ubuntu OK
Tested server kernel versions:
Linux 3.13.0-29-generic #53-Ubuntu OK
Linux 3.13.0-27-generic #50-Ubuntu OK
Linux 3.13.0-24-generic #47-Ubuntu OK
lsb_release -rd:
Description: Ubuntu 14.04 LTS
Release: 14.04
apt-cache policy linux-image-generic:
linux-image-generic:
Installed: (none)
Candidate: 3.13.0.29.35
Version table:
3.13.0.29.35 0
500 http://se.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
500 http://security.ubuntu.com/ubuntu/ trusty-security/main amd64 Packages
3.13.0.24.28 0
500 http://se.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-29-generic 3.13.0-29.53
ProcVersionSignature: Ubuntu 3.13.0-29.53-generic 3.13.11.2
Uname: Linux 3.13.0-29-generic x86_64
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Jun 7 16:26 seq
crw-rw---- 1 root audio 116, 33 Jun 7 16:26 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: [Errno 2] No such file or directory: 'fuser'
CRDA: Error: [Errno 2] No such file or directory: 'iw'
Date: Sat Jun 7 16:30:02 2014
HibernationDevice: RESUME=UUID=9c13108b-d40a-4881-b563-c477ed2e6804
InstallationDate: Installed on 2014-06-07 (0 days ago)
InstallationMedia: Ubuntu-Server 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
Lsusb:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: QEMU Standard PC (i440FX + PIIX, 1996)
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-29-generic root=UUID=9068010d-8332-47c8-ae62-ccc62ca57290 ro
RelatedPackageVersions:
linux-restricted-modules-3.13.0-29-generic N/A
linux-backports-modules-3.13.0-29-generic N/A
linux-firmware N/A
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/01/2011
dmi.bios.vendor: Bochs
dmi.bios.version: Bochs
dmi.chassis.type: 1
dmi.chassis.vendor: Bochs
dmi.modalias: dmi:bvnBochs:bvrBochs:bd01/01/2011:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-2.0:cvnBochs:ct1:cvr:
dmi.product.name: Standard PC (i440FX + PIIX, 1996)
dmi.product.version: pc-i440fx-2.0
dmi.sys.vendor: QEMU |
|
| 2014-06-07 17:01:42 |
My Karlsson |
summary |
Long timeout when mounting NFS shares |
Long delay when mounting NFS shares |
|
| 2014-06-12 10:24:11 |
My Karlsson |
tags |
amd64 apport-bug trusty |
amd64 apport-bug kernel nfs regression-update trusty |
|
| 2014-06-13 21:03:14 |
Joseph Salisbury |
tags |
amd64 apport-bug kernel nfs regression-update trusty |
amd64 apport-bug kernel nfs performing-bisect regression-update trusty |
|
| 2014-06-13 21:05:32 |
Joseph Salisbury |
linux (Ubuntu): importance |
Undecided |
Medium |
|
| 2014-06-27 09:00:15 |
bigbrovar |
bug |
|
|
added subscriber bigbrovar |
| 2014-07-16 14:23:52 |
Stefan Bader |
bug |
|
|
added subscriber Stefan Bader |
| 2014-08-13 15:52:13 |
Bruno |
bug watch added |
|
https://bugzilla.redhat.com/show_bug.cgi?id=1001934 |
|
| 2014-08-14 12:44:25 |
Stefan Bader |
nominated for series |
|
Ubuntu Trusty |
|
| 2014-08-14 12:44:25 |
Stefan Bader |
bug task added |
|
linux (Ubuntu Trusty) |
|
| 2014-08-14 12:45:05 |
Stefan Bader |
linux (Ubuntu Trusty): importance |
Undecided |
Medium |
|
| 2014-08-14 12:45:05 |
Stefan Bader |
linux (Ubuntu Trusty): status |
New |
Triaged |
|
| 2014-08-14 12:45:05 |
Stefan Bader |
linux (Ubuntu Trusty): assignee |
|
Stefan Bader (smb) |
|
| 2014-08-14 12:45:21 |
Stefan Bader |
linux (Ubuntu): status |
Confirmed |
Fix Released |
|
| 2014-08-14 12:51:20 |
Stefan Bader |
description |
Summary:
After upgrading the kernel on Ubuntu 14.04 to 3.13.0-29-generic I found that it can take a considerably longer amount of time to mount NFS shares.
How to reproduce:
1. Install Ubuntu 14.04 on two machines. A minimal server install should be fine. One will act as a server, the other as a client.
2. Upgrade the kernel on the client machine to at least 3.13.0-27-generic.
3. Install the nfs-kernel-server package on the server.
4. Add a directory to /etc/exports and run service nfs-kernel-server start.
5. Install the nfs-common package on the client.
6. Attempt to mount the shared directory on the client.
Expected result:
The shared directory should be mounted on the client more or less immediately.
Actual result:
The mount command hangs and eventually completes. In this test case it takes 16 seconds consistently. On a production machine where the problem was first discovered the time is considerably longer and essentially makes it impossible to mount NFS shares.
Regression:
I have been able to reproduce the problem on clients running Linux 3.13.0-27-generic and later. The problem is not reproducible on clients running Linux 3.13.0-24-generic. The problem is reproducible no matter which kernel version is used on the server.
Tested client kernel versions:
Linux 3.13.0-29-generic #53-Ubuntu FAIL
Linux 3.13.0-27-generic #50-Ubuntu FAIL
Linux 3.13.0-24-generic #47-Ubuntu OK
Tested server kernel versions:
Linux 3.13.0-29-generic #53-Ubuntu OK
Linux 3.13.0-27-generic #50-Ubuntu OK
Linux 3.13.0-24-generic #47-Ubuntu OK
lsb_release -rd:
Description: Ubuntu 14.04 LTS
Release: 14.04
apt-cache policy linux-image-generic:
linux-image-generic:
Installed: (none)
Candidate: 3.13.0.29.35
Version table:
3.13.0.29.35 0
500 http://se.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
500 http://security.ubuntu.com/ubuntu/ trusty-security/main amd64 Packages
3.13.0.24.28 0
500 http://se.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-29-generic 3.13.0-29.53
ProcVersionSignature: Ubuntu 3.13.0-29.53-generic 3.13.11.2
Uname: Linux 3.13.0-29-generic x86_64
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Jun 7 16:26 seq
crw-rw---- 1 root audio 116, 33 Jun 7 16:26 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: [Errno 2] No such file or directory: 'fuser'
CRDA: Error: [Errno 2] No such file or directory: 'iw'
Date: Sat Jun 7 16:30:02 2014
HibernationDevice: RESUME=UUID=9c13108b-d40a-4881-b563-c477ed2e6804
InstallationDate: Installed on 2014-06-07 (0 days ago)
InstallationMedia: Ubuntu-Server 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
Lsusb:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: QEMU Standard PC (i440FX + PIIX, 1996)
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-29-generic root=UUID=9068010d-8332-47c8-ae62-ccc62ca57290 ro
RelatedPackageVersions:
linux-restricted-modules-3.13.0-29-generic N/A
linux-backports-modules-3.13.0-29-generic N/A
linux-firmware N/A
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/01/2011
dmi.bios.vendor: Bochs
dmi.bios.version: Bochs
dmi.chassis.type: 1
dmi.chassis.vendor: Bochs
dmi.modalias: dmi:bvnBochs:bvrBochs:bd01/01/2011:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-2.0:cvnBochs:ct1:cvr:
dmi.product.name: Standard PC (i440FX + PIIX, 1996)
dmi.product.version: pc-i440fx-2.0
dmi.sys.vendor: QEMU |
SRU justification:
Impact: Kernel 3.13 shows a 16s delay when mounting NFS shares without using gssd (kerberos authentication) because it does not detect whether gssd is running at all or not.
Fix: This was fixed upstream in 3.14 by having gssd create a dummy pipe which is used as an indication of it running. Cherry-picking 3 patches from upstream gets rid of the delay.
Testcase: Trying to mount a NFS share with unix authentication will be delayed by 16s when not forcing NFSv3 protocol (using -onfsvers=3 with the mount command). After applying the patches the delay is gone.
---
Summary:
After upgrading the kernel on Ubuntu 14.04 to 3.13.0-29-generic I found that it can take a considerably longer amount of time to mount NFS shares.
How to reproduce:
1. Install Ubuntu 14.04 on two machines. A minimal server install should be fine. One will act as a server, the other as a client.
2. Upgrade the kernel on the client machine to at least 3.13.0-27-generic.
3. Install the nfs-kernel-server package on the server.
4. Add a directory to /etc/exports and run service nfs-kernel-server start.
5. Install the nfs-common package on the client.
6. Attempt to mount the shared directory on the client.
Expected result:
The shared directory should be mounted on the client more or less immediately.
Actual result:
The mount command hangs and eventually completes. In this test case it takes 16 seconds consistently. On a production machine where the problem was first discovered the time is considerably longer and essentially makes it impossible to mount NFS shares.
Regression:
I have been able to reproduce the problem on clients running Linux 3.13.0-27-generic and later. The problem is not reproducible on clients running Linux 3.13.0-24-generic. The problem is reproducible no matter which kernel version is used on the server.
Tested client kernel versions:
Linux 3.13.0-29-generic #53-Ubuntu FAIL
Linux 3.13.0-27-generic #50-Ubuntu FAIL
Linux 3.13.0-24-generic #47-Ubuntu OK
Tested server kernel versions:
Linux 3.13.0-29-generic #53-Ubuntu OK
Linux 3.13.0-27-generic #50-Ubuntu OK
Linux 3.13.0-24-generic #47-Ubuntu OK
lsb_release -rd:
Description: Ubuntu 14.04 LTS
Release: 14.04
apt-cache policy linux-image-generic:
linux-image-generic:
Installed: (none)
Candidate: 3.13.0.29.35
Version table:
3.13.0.29.35 0
500 http://se.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
500 http://security.ubuntu.com/ubuntu/ trusty-security/main amd64 Packages
3.13.0.24.28 0
500 http://se.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-29-generic 3.13.0-29.53
ProcVersionSignature: Ubuntu 3.13.0-29.53-generic 3.13.11.2
Uname: Linux 3.13.0-29-generic x86_64
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Jun 7 16:26 seq
crw-rw---- 1 root audio 116, 33 Jun 7 16:26 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: [Errno 2] No such file or directory: 'fuser'
CRDA: Error: [Errno 2] No such file or directory: 'iw'
Date: Sat Jun 7 16:30:02 2014
HibernationDevice: RESUME=UUID=9c13108b-d40a-4881-b563-c477ed2e6804
InstallationDate: Installed on 2014-06-07 (0 days ago)
InstallationMedia: Ubuntu-Server 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
Lsusb:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: QEMU Standard PC (i440FX + PIIX, 1996)
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-29-generic root=UUID=9068010d-8332-47c8-ae62-ccc62ca57290 ro
RelatedPackageVersions:
linux-restricted-modules-3.13.0-29-generic N/A
linux-backports-modules-3.13.0-29-generic N/A
linux-firmware N/A
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/01/2011
dmi.bios.vendor: Bochs
dmi.bios.version: Bochs
dmi.chassis.type: 1
dmi.chassis.vendor: Bochs
dmi.modalias: dmi:bvnBochs:bvrBochs:bd01/01/2011:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-2.0:cvnBochs:ct1:cvr:
dmi.product.name: Standard PC (i440FX + PIIX, 1996)
dmi.product.version: pc-i440fx-2.0
dmi.sys.vendor: QEMU |
|
| 2014-08-14 13:52:14 |
Tim Gardner |
nominated for series |
|
Ubuntu Utopic |
|
| 2014-08-14 13:52:14 |
Tim Gardner |
bug task added |
|
linux (Ubuntu Utopic) |
|
| 2014-08-14 13:52:27 |
Tim Gardner |
linux (Ubuntu Trusty): status |
Triaged |
Fix Committed |
|
| 2014-08-19 15:32:34 |
Launchpad Janitor |
branch linked |
|
lp:ubuntu/precise-proposed/linux-lts-trusty |
|
| 2014-08-19 20:50:10 |
Brad Figg |
tags |
amd64 apport-bug kernel nfs performing-bisect regression-update trusty |
amd64 apport-bug kernel nfs performing-bisect regression-update trusty verification-needed-trusty |
|
| 2014-08-19 21:14:26 |
Launchpad Janitor |
branch linked |
|
lp:ubuntu/trusty-proposed/linux-keystone |
|
| 2014-08-20 09:14:01 |
Bruno |
tags |
amd64 apport-bug kernel nfs performing-bisect regression-update trusty verification-needed-trusty |
amd64 apport-bug kernel nfs performing-bisect regression-update trusty verification-done-trusty |
|
| 2014-08-28 22:33:07 |
Launchpad Janitor |
linux (Ubuntu Trusty): status |
Fix Committed |
Fix Released |
|
| 2014-08-28 22:33:07 |
Launchpad Janitor |
cve linked |
|
2014-0155 |
|
| 2014-08-28 22:33:07 |
Launchpad Janitor |
cve linked |
|
2014-4508 |
|
| 2014-08-28 23:30:39 |
Launchpad Janitor |
branch linked |
|
lp:ubuntu/precise-security/linux-lts-trusty |
|
