zfs/etc/systemd/system/zfs-import-scan.service.in

[Unit]
Description=Import ZFS pools by device scanning
DefaultDependencies=no
Requires=systemd-udev-settle.service
After=systemd-udev-settle.service
After=cryptsetup.target
ConditionPathExists=!@sysconfdir@/zfs/zpool.cache

[Service]
Type=oneshot
RemainAfterExit=yes
ExecStart=/sbin/modprobe zfs && @sbindir@/zpool import -d /dev/disk/by-id -aN
Add systemd unit files for ZFS startup This adds systemd unit files replacing the functionality offered by the SysV init script found in etc/init.d. It has been developed and tested on Fedora 19, Fedora 20 and openSuSE 13.1. Four unit files and one target are offered. zfs-import-cache.service: Import pools from /etc/zfs/zpool.cache. This unit will wait for udev to settle. zfs-import-scan.service: Import pools by scanning /dev/disk/by-id for zvols. This unit will only run if /etc/zfs/zpool.cache is not present. This unit will wait for udev to settle zfs-mount.service: Mount ZFS native filesystems. It contains a dependency to be loaded before local-fs.target. zfs-share.service: Share NFS/SMB filesystems. This unit contains a dependency that will cause it to be restarted whenever the smb or nfs-server unit is restarted, restoring the shares added. zfs.target: This target pulls in the other units in order to start ZFS. It's the only unit that can be enabled/disabled, all other services are static and pulled in by dependencies. It will honour zfs=off and zfs=no options on the kernel command line. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #2108 2014-01-19 14:36:49 +00:00			`[Unit]`
			`Description=Import ZFS pools by device scanning`
			`DefaultDependencies=no`
			`Requires=systemd-udev-settle.service`
			`After=systemd-udev-settle.service`
Import zfs pools after cryptsetup The zfs-import-cache.service and zfs-import-scan.service should should be started after cryptsetup to ensure all LUKS devices have been opened. Signed-off-by: alteriks <alteriks@gmail.com> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #1474 2014-07-26 16:45:15 +00:00			`After=cryptsetup.target`
Add systemd unit files for ZFS startup This adds systemd unit files replacing the functionality offered by the SysV init script found in etc/init.d. It has been developed and tested on Fedora 19, Fedora 20 and openSuSE 13.1. Four unit files and one target are offered. zfs-import-cache.service: Import pools from /etc/zfs/zpool.cache. This unit will wait for udev to settle. zfs-import-scan.service: Import pools by scanning /dev/disk/by-id for zvols. This unit will only run if /etc/zfs/zpool.cache is not present. This unit will wait for udev to settle zfs-mount.service: Mount ZFS native filesystems. It contains a dependency to be loaded before local-fs.target. zfs-share.service: Share NFS/SMB filesystems. This unit contains a dependency that will cause it to be restarted whenever the smb or nfs-server unit is restarted, restoring the shares added. zfs.target: This target pulls in the other units in order to start ZFS. It's the only unit that can be enabled/disabled, all other services are static and pulled in by dependencies. It will honour zfs=off and zfs=no options on the kernel command line. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #2108 2014-01-19 14:36:49 +00:00			`ConditionPathExists=!@sysconfdir@/zfs/zpool.cache`

			`[Service]`
			`Type=oneshot`
			`RemainAfterExit=yes`
Wait in libzfs_init() for the /dev/zfs device While module loading itself is synchronous the creation of the /dev/zfs device is not. This is because /dev/zfs is typically created by a udev rule after the module is registered and presented to user space through sysfs. This small window between module loading and device creation can result in spurious failures of libzfs_init(). This patch closes that race by extending libzfs_init() so it can detect that the modules are loaded and only if required wait for the /dev/zfs device to be created. This allows scripts to reliably use the following shell construct without the need for additional error handling. $ /sbin/modprobe zfs && /sbin/zpool import -a To minimize the potential time waiting in libzfs_init() a strategy similar to adaptive mutexes is employed. The function will busy-wait for up to 10ms based on the expectation that the modules were just loaded and therefore the /dev/zfs will be created imminently. If it takes longer than this it will fall back to polling for up to 10 seconds. This behavior can be customized to some degree by setting the following new environment variables. This functionality is provided for backwards compatibility with existing scripts which depend on the module auto-load behavior. By default module auto-loading is now disabled. * ZFS_MODULE_LOADING="YES\|yes\|ON\|on" - Attempt to load modules. * ZFS_MODULE_TIMEOUT="<seconds>" - Seconds to wait for /dev/zfs The zfs-import-* systemd service files have been updated to call '/sbin/modprobe zfs' so they no longer rely on the legacy auto-loading behavior. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Chris Dunlap <cdunlap@llnl.gov> Signed-off-by: Richard Yao <ryao@gentoo.org> Closes #2556 2015-05-20 21:36:37 +00:00			`ExecStart=/sbin/modprobe zfs && @sbindir@/zpool import -d /dev/disk/by-id -aN`