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zfs/udev/rules.d/90-zfs.rules.in

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Open pools asynchronously after module load One of the side effects of calling zvol_create_minors() in zvol_init() is that all pools listed in the cache file will be opened. Depending on the state and contents of your pool this operation can take a considerable length of time. Doing this at load time is undesirable because the kernel is holding a global module lock. This prevents other modules from loading and can serialize an otherwise parallel boot process. Doing this after module inititialization also reduces the chances of accidentally introducing a race during module init. To ensure that /dev/zvol/<pool>/<dataset> devices are still automatically created after the module load completes a udev rules has been added. When udev notices that the /dev/zfs device has been create the 'zpool list' command will be run. This then will cause all the pools listed in the zpool.cache file to be opened. Because this process in now driven asynchronously by udev there is the risk of problems in downstream distributions. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Issue #756 Issue #1020 Issue #1234
2013-07-02 18:59:51 +00:00
SUBSYSTEM!="block|misc", GOTO="zfs_end"
Add dracut support To simplify the process of using zfs as your root filesystem a zfs-drucat sub-package has been added. This sub-package adds a zfs dracut module which allows your initramfs to be rebuilt with zfs support. The process for doing this is still complicated but there is clearly interest from the community about getting this working well and documented. This should help lay some of the groundwork. Longer term these changes should be pushed in the upstream dracut package. Once that occurs this subpackage will no longer be required for new systems, however we may want to conditionally build this package in the future for systems running older dracut versions. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
2011-03-17 22:18:13 +00:00
ACTION!="add|change", GOTO="zfs_end"
ENV{ID_FS_TYPE}=="zfs", RUN+="/sbin/modprobe zfs"
ENV{ID_FS_TYPE}=="zfs_member", RUN+="/sbin/modprobe zfs"
Update for Dracut-010 Update Dracut module for Dracut-010 and fix race conditions that caused boot to fail on MP systems. Add support for zfs_force flag and parsing of spl_hostid from kernel command line. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
2011-07-04 17:25:31 +00:00
KERNEL=="null", SYMLINK+="root"
SYMLINK=="null", SYMLINK+="root"
Open pools asynchronously after module load One of the side effects of calling zvol_create_minors() in zvol_init() is that all pools listed in the cache file will be opened. Depending on the state and contents of your pool this operation can take a considerable length of time. Doing this at load time is undesirable because the kernel is holding a global module lock. This prevents other modules from loading and can serialize an otherwise parallel boot process. Doing this after module inititialization also reduces the chances of accidentally introducing a race during module init. To ensure that /dev/zvol/<pool>/<dataset> devices are still automatically created after the module load completes a udev rules has been added. When udev notices that the /dev/zfs device has been create the 'zpool list' command will be run. This then will cause all the pools listed in the zpool.cache file to be opened. Because this process in now driven asynchronously by udev there is the risk of problems in downstream distributions. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Issue #756 Issue #1020 Issue #1234
2013-07-02 18:59:51 +00:00
SUBSYSTEM=="misc", KERNEL=="zfs", RUN+="@sbindir@/zpool list"
Add dracut support To simplify the process of using zfs as your root filesystem a zfs-drucat sub-package has been added. This sub-package adds a zfs dracut module which allows your initramfs to be rebuilt with zfs support. The process for doing this is still complicated but there is clearly interest from the community about getting this working well and documented. This should help lay some of the groundwork. Longer term these changes should be pushed in the upstream dracut package. Once that occurs this subpackage will no longer be required for new systems, however we may want to conditionally build this package in the future for systems running older dracut versions. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
2011-03-17 22:18:13 +00:00
LABEL="zfs_end"