#Docker fsync failed docker read driver#
#Docker fsync failed docker read download#

To make it permanent, I created a systemd drop-in: This was on Debian Jessie and docker running as a systemd service/unit. # /usr/bin/dockerd -D -storage-driver=overlay

#Docker fsync failed docker read driver#

I fixed it by ensuring the storage driver was 'overlay': I got the 'There are no more loopback devices available' error, which stopped dockerd from running. I've read that it could be because I have not enough space disk, I think it's not that, any idea ?ДЇilesystem blocs de 1K Used Available Used Mounted on prior storage driver 'devicemapper' failed: devicemapper: Error running deviceCreate (CreatePool) dm_task_run failed Then I have installed docker-engine.x86_64, and when starting the docker daemon, I get the following errors :ДEBU Error retrieving the next available loopback: open /dev/loop-control: no such deviceД®RRO **There are no more loopback devices available.**Д®RRO prior storage driver 'devicemapper' failed: loopback attach failedДEBU Cleaning up old mountid : start.ДЇATA Error starting daemon: error initializing graphdriver: loopback attach failedДЄfter manually add the loop module which control loop device with this command :

#Docker fsync failed docker read download#

* Drop back to detecting it the long way.CentOs 7 : Docker -d вЂњError running deviceCreate (CreatePool)вЂќ I'm building some CentOS vm with vmware, with no acces to internet, so I've download and made local repositories, including this one libselinux-2.2.1 on F20 doesn't seem to have this code. Looking at libselinux-2.0.94, I think it's seeing selinuxfs listed in /proc/filesystems and assuming SELinux is enabled because of this. It appears to be simply a directory on the root filesystem (/selinux/booleans exists as an empty dir). selinux exists within the container, but nothing is actually mounted there. Another difference - on Fedora, getenforce returns 'Disabled' but on EL6 it prints: Libselinux-utils-2.0.94-5.3.el6_4.1.x86_64Д¬alling is_selinux_enabled() on Fedora is returning 0, while on EL6 it's returning 1. These packages are installed inside the EL6 container: sys is correctly read-only as you expected, but it seems useradd's still doing SELinux stuff then. > mounted as read/only, this will tell useradd NOT to try to do any SELinux > SELinux sees the container as being disabled since /sys/fs/selinux is Sysfs on /sys type sysfs (ro,seclabel,relatime) Sysfs on /sys type sysfs (rw,seclabel,nosuid,nodev,noexec,relatime) > sysfs on /sys type sysfs (ro,relatime,seclabel) > id: -context (-Z) works only on an SELinux-enabled kernel > If you do id -Z, does it complain inside the container? > The problem is inside the container it sees SELinux as being enabled, which

(In reply to Daniel Walsh from comment #5) в””в”Ђ997 /usr/bin/docker -d -selinux-enabled Loaded: loaded (/etc/systemd/system/rvice enabled)ДЄctive: active (running) since Fri 09:52:25 EDT 4s ago

# cp /usr/lib/systemd/system/rvice /etc/systemd/system/Дescription=Docker Application Container EngineД®xecStart=/usr/bin/docker -d -selinux-enabledДrvice - Docker Application Container Engine * second, add `-selinux-enabled` as described at

I reproduced using two docker service configs: When selinux is enabled (permissive), the bug is always reproducible. When selinux=disabled, i cannot reproduce the bug. Write(2, 'useradd: failure while writing c'., 54useradd: failure while writing changes to /etc/passwd Open('/proc/self/task/30/attr/fscreate', O_RDWR) = -1 EROFS (Read-only file system) Open('/proc/self/task/30/attr/fscreate', O_RDONLY) = 9

docker run -t centos /usr/sbin/useradd test Version-Release number of selected component (if applicable):Дў. The Fedora 20 host has SELinux enforcing, and the same issue occurs when set to permissive. 'centos' is the official CentOS 6 image (0b443ba03958). Useradd: failure while writing changes to /etc/passwd $ docker run -t centos /usr/sbin/useradd test Between docker-io-0.10.0-2.fc20 and docker-io-0.11.1-1.fc20, the following has started failing: