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* Based on the init scripts included with Debian GNU/Linux, then take code
from the already existing ones, trying to merge them into one set of
scripts that will work for 'everyone' for better maintainability.
* Add configurable variables to control the workings of the init scripts:
* ZFS_INITRD_PRE_MOUNTROOT_SLEEP
Set a sleep time before we load the module (used primarily by initrd
scripts to allow for slower media (such as USB devices etc) to be
availible before we load the zfs module).
* ZFS_INITRD_POST_MODPROBE_SLEEP
Set a timed sleep in the initrd to after the load of the zfs module.
* ZFS_INITRD_ADDITIONAL_DATASETS
To allow for mounting additional datasets in the initrd. Primarily used
in initrd scripts to allow for when filesystem needed to boot (such as
/usr, /opt, /var etc) isn't directly under the root dataset.
* ZFS_POOL_EXCEPTIONS
Exclude pools from being imported (in the initrd and/or init scripts).
* ZFS_DKMS_ENABLE_DEBUG, ZFS_DKMS_ENABLE_DEBUG_DMU_TX, ZFS_DKMS_DISABLE_STRIP
Set to control how dkms should build the dkms packages.
* ZPOOL_IMPORT_PATH
Set path(s) where "zpool import" should import pools from.
This was previously the job of "USE_DISK_BY_ID" (which is still used
for backwards compatibility) but was renamed to allow for better
control of import path(s).
* If old USE_DISK_BY_ID is set, but not new ZPOOL_IMPORT_PATH, then we
set ZPOOL_IMPORT_PATH to sane defaults just to be on the safe side.
* ZED_ARGS
To allow for local options to zed without having to change the init script.
* The import function, do_import(), imports pools by name instead of '-a'
for better control of pools to import and from where.
* If USE_DISK_BY_ID is set (for backwards compatibility), but isn't 'yes'
then ignore it.
* If pool(s) isn't found with a simple "zpool import" (seen it happen),
try looking for them in /dev/disk/by-id (if it exists). Any duplicates
(pools found with both commands) is filtered out.
* IF we have found extra pool(s) this way, we must force USE_DISK_BY_ID
so that the first, simple "zpool import $pool" is able to find it.
* Fallback on importing the pool using the cache file (if it exists) only
if 'simple' import (either with ZPOOL_IMPORT_PATH or the 'built in'
defaults) didn't work.
* The export function, do_export(), will export all pools imported, EXCEPT
the root pool (if there is one).
* ZED script from the Debian GNU/Linux packages added.
* Refreshed ZED init script from behlendorf@5e7a660 to be portable so it
may be used on both LSB and Redhat style systems.
* If there is no pool(s) imported and zed successfully shut down, we will
unload the zfs modules.
* The function library file for the ZoL init script is installed as
/etc/init.d/zfs-functions.
* The four init scripts, the /etc/{defaults,sysconfig,conf.d}/zfs config file
as well as the common function library is tagged as '%config(noreplace)' in
the rpm rules file to make sure they are not replaced automatically if locally
modifed.
* Pitfals and workarounds:
* If we're running from init, remove stale /etc/dfs/sharetab before importing
pools in the zfs-import init script.
* On Debian GNU/Linux, there's a 'sendsigs' script that will kill basically
everything quite early in the shutdown phase and zed is/should be stopped
much later than that. We don't want zed to be among the ones killed, so add
the zed pid to list of pids for 'sendsigs' to ignore.
* CentOS uses echo_success() and echo_failure() to print out status of
command. These in turn uses "echo -n \0xx[etc]" to move cursor and choose
colour etc. This doesn't work with the modified IFS variable we need to
use in zfs-import for some reason, so work around that when we define
zfs_log_{end,failure}_msg() for RedHat and derivative distributions.
* All scripts passes ShellCheck (with one false positive in do_mount()).
Signed-off-by: Turbo Fredriksson turbo@bayour.com
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed by: Richard Yao <ryao@gentoo.org>
Reviewed by: Chris Dunlap <cdunlap@llnl.gov>
Closes #2974
Closes #2107
83 lines
3.0 KiB
Plaintext
83 lines
3.0 KiB
Plaintext
# ZoL userland configuration.
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# Run `zfs mount -a` during system start?
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ZFS_MOUNT='yes'
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# Run `zfs unmount -a` during system stop?
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ZFS_UNMOUNT='yes'
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# Run `zfs share -a` during system start?
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# nb: The shareiscsi, sharenfs, and sharesmb dataset properties.
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ZFS_SHARE='yes'
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# Run `zfs unshare -a` during system stop?
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ZFS_UNSHARE='yes'
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# Specify specific path(s) to look for device nodes and/or links for the
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# pool import(s). See zpool(8) for more information about this variable.
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# It supersedes the old USE_DISK_BY_ID which indicated that it would only
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# try '/dev/disk/by-id'.
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# The old variable will still work in the code, but is deprecated.
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#ZPOOL_IMPORT_PATH="/dev/disk/by-vdev:/dev/disk/by-id"
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# Should the datasets be mounted verbosely?
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# A mount counter will be used when mounting if set to 'yes'.
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VERBOSE_MOUNT='no'
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# Should we allow overlay mounts?
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# This is standard in Linux, but not ZFS which comes from Solaris where this
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# is not allowed).
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DO_OVERLAY_MOUNTS='no'
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# Any additional option to the 'zfs mount' command line?
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# Include '-o' for each option wanted.
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MOUNT_EXTRA_OPTIONS=""
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# Build kernel modules with the --enable-debug switch?
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# Only applicable for Debian GNU/Linux {dkms,initramfs}.
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ZFS_DKMS_ENABLE_DEBUG='no'
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# Build kernel modules with the --enable-debug-dmu-tx switch?
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# Only applicable for Debian GNU/Linux {dkms,initramfs}.
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ZFS_DKMS_ENABLE_DEBUG_DMU_TX='no'
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# Keep debugging symbols in kernel modules?
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# Only applicable for Debian GNU/Linux {dkms,initramfs}.
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ZFS_DKMS_DISABLE_STRIP='no'
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# Wait for this many seconds in the initrd pre_mountroot?
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# This delays startup and should be '0' on most systems.
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# Only applicable for Debian GNU/Linux {dkms,initramfs}.
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ZFS_INITRD_PRE_MOUNTROOT_SLEEP='0'
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# Wait for this many seconds in the initrd mountroot?
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# This delays startup and should be '0' on most systems. This might help on
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# systems which have their ZFS root on a USB disk that takes just a little
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# longer to be available
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# Only applicable for Debian GNU/Linux {dkms,initramfs}.
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ZFS_INITRD_POST_MODPROBE_SLEEP='0'
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# List of additional datasets to mount after the root dataset is mounted?
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#
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# The init script will use the mountpoint specified in the 'mountpoint'
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# property value in the dataset to determine where it should be mounted.
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#
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# This is a space separated list, and will be mounted in the order specified,
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# so if one filesystem depends on a previous mountpoint, make sure to put
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# them in the right order.
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#
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# It is not necessary to add filesystems below the root fs here. It is
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# taken care of by the initrd script automatically. These are only for
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# additional filesystems needed. Such as /opt, /usr/local which is not
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# located under the root fs.
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# Example: If root FS is 'rpool/ROOT/rootfs', this would make sense.
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#ZFS_INITRD_ADDITIONAL_DATASETS="rpool/ROOT/usr rpool/ROOT/var"
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# List of pools that should NOT be imported at boot?
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# This is a space separated list.
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#ZFS_POOL_EXCEPTIONS="test2"
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# Optional arguments for the ZFS Event Daemon (ZED).
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# See zed(8) for more information on available options.
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#ZED_ARGS="-M"
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