There are a couple changes included here. The first is to introduce
a cap on the size the ZED will grow the zevent list to. One million
entries is more than enough for most use cases, and if you are
overflowing that value, the problem needs to be addressed another
way. The value is also tunable, for those who want the limit to be
higher or lower.
The other change is to add a kernel module parameter that allows
snapshot creation/deletion to be exempted from the history logging;
for most workloads, having these things logged is valuable, but for
some workloads it produces large quantities of log spam and isn't
especially helpful.
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Paul Dagnelie <pcd@delphix.com>
Issue #13374Closes#13753
Most notably this fixes the vdev_id(8) non-.Xrs in vdev_id.conf.5
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes#12212
Afterward, git grep ZoL matches:
* README.md: * [ZoL Site](https://zfsonlinux.org)
- Correct
* etc/default/zfs.in:# ZoL userland configuration.
- Changing this would induce a needless upgrade-check,
if the user has modified the configuration;
this can be updated the next time the defaults change
* module/zfs/dmu_send.c: * ZoL < 0.7 does not handle [...]
- Before 0.7 is ZoL, so fair enough
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Issue #11956
These events should currently never be generated.
Also untag _zed_event_add_nvpair() from merge with
zpool_do_events_nvprint() ‒ they serve different purposes (machine,
usually script vs human consumption) and format the output differently
as it stands
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes#11834
And add a note on /why/ ZEDLETs need to be owned by root
Quoth chown(2), Linux man-pages project:
Only a privileged process (Linux: one with the CAP_CHOWN capability)
may change the owner of a file.
Quoth chown(2), FreeBSD:
[EPERM] The operation would change the ownership,
but the effective user ID is not the super-user.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes#11834
There simply isn't a need for one, since the flags the daemon takes
are all short (mostly just toggles) and administrative in nature,
and are therefore better served by the age-old tradition of sourcing an
environment file and preparing the cmdline in the init-specific handler
itself, if needed at all
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes#11834
200ms time-out is relatively long, but if we already hit the cap,
then we'll likely be able to spawn multiple new jobs when we wake up
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes#11807
When a child process is killed waitpid() must be called on the
pid the reap the zombie process.
Update BUGS section to reflect reality by replacing "zedlets
aren't time limited with "zedlets can be interrupted".
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes#11769Closes#11798
This change updates the documentation to refer to the project
as OpenZFS instead ZFS on Linux. Web links have been updated
to refer to https://github.com/openzfs/zfs. The extraneous
zfsonlinux.org web links in the ZED and SPL sources have been
dropped.
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes#11007
* Use all caps for document title.
* Remove section name as it can be inferred from the section number.
* Name "OpenZFS" as the document source.
* Bump modification date.
While here, fixed trailing whitespace reported by igor.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
Closes#10792
This commit adds two features to zed, that macOS desires. The first
is that when you unload the kernel module, zed would enter into a
cpubusy loop calling zfs_events_next() repeatedly. We now look for
ENODEV, returned by kernel, so zed can exit gracefully.
Second feature is -I (idle) (alas -P persist was taken) is for the
deamon to;
1; if started without ZFS kernel module, stick around waiting for it.
2; if kernel module is unloaded, go back to 1.
This is due to daemons in macOS is started by launchctl, and is
expected to stick around.
Currently, the busy loop only exists when errno is ENODEV. This is
to ensure that functionality that upstream expects is not changed.
It did not care about errors before, and it still does not. (with the
exception of ENODEV).
However, it is probably better that all errors
(ERESTART notwithstanding) exits the loop, and the issues complaining
about zed taking all CPU will go away.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Jorgen Lundman <lundman@lundman.net>
Closes#10476
Update the project website links contained in to repository to
reference the secure https://zfsonlinux.org address.
Reviewed-By: Richard Laager <rlaager@wiktel.com>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Garrett Fields <ghfields@gmail.com>
Reviewed-by: Kjeld Schouten <kjeld@schouten-lebbing.nl>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes#9837
Moved subcommand topics into individual manpages. Reordered and
grouped the list of subcommands by topic.
Moved concepts overview to `zpoolconcepts.8` and the long list of
available pool properties to `zpoolprops.8`.
Internal cross-references copied from `zpool.8` needed to be
converted to `.Xr` external references to new subcommand manual
pages.
Move `autotrim` into lexical order, autotrim tacked onto the end
of a list. Now it is in alphabetical order.
Clarify attach/detach description. Description was too specific to
command syntax. Overview clarifies reason for attaching or detaching
a device.
Clarify replace description, don't refer to subcommand arguments.
Clarify split command description, say what split actually does and
why you'd want to do it.
Clarify description of upgrade, and simplify the zpool.8 wording of
the zpool-upgrade(8) description.
Clarify description of import, detail what zpool-import(8) actually
does.
Add appropriate SEE ALSO sections. Divided zpool subcommand manual
pages need their own SEE ALSO sections. Also modified fsck.zfs.8
to point directly to zfs-scrub.8 and zed.8.in to include a direct
reference to zfs-events.8
Reviewed-by: Matt Ahrens <matt@delphix.com>
Reviewed-by: Kjeld Schouten <kjeld@schouten-lebbing.nl>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ross Williams <ross@ross-williams.net>
Closes#9564
zpool and zed place scripts in subdirectories of libexecdir. Some
distributions locate architecture independent scripts in other locations
(e.g. Debian). To avoid these paths getting out of sync, centralize the
definitions.
Build zfs-test's default.cfg by Makefile. Use the new directory
logic building tests/zfs-tests/include/default.cfg.in.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Antonio Russo <antonio.e.russo@gmail.com>
Closes#7597
* Add a zed script to kick off a scrub after a resilver. The script is
disabled by default.
* Add a optional $PATH (-P) option to zed to allow it to use a custom
$PATH for its zedlets. This is needed when you're running zed under
the ZTS in a local workspace.
* Update test scripts to not copy in all-debug.sh and all-syslog.sh by
default. They can be optionally copied in as part of zed_setup().
These scripts slow down zed considerably under heavy events loads and
can cause events to be dropped or their delivery delayed. This was
causing some sporadic failures in the 'fault' tests.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes#4662Closes#7086
This commit updates the copyright boilerplate within the ZED subtree.
The instructions for appending a contributor copyright line have
been removed. Manually maintaining copyright notices in this
manner is error-prone, imprecise at a file-scope granularity, and
oftentimes inaccurate. These lines can become a pernicious source of
merge conflicts. A commit log is better suited to maintaining this
information. Consequently, a line has been added to the boilerplate
to refer to the git commit log for authoritative copyright attribution.
To account for the scenario where a file may become separated from
the codebase and commit history (i.e., it is copied somewhere else),
a line has been added to identify the file's origin.
http://softwarefreedom.org/resources/2012/ManagingCopyrightInformation.html
Signed-off-by: Chris Dunlap <cdunlap@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes#3384
The executables invoked by the ZED in response to a given zevent
have been generically referred to as "scripts". By convention,
these scripts have aimed to be /bin/sh compatible for reasons of
portability and comprehensibility. However, the ZED only requires
they be executable and (ideally) capable of reading environment
variables. As such, these scripts are now referred to as ZEDLETs
(ZFS Event Daemon Linkage for Executable Tasks).
Signed-off-by: Chris Dunlap <cdunlap@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes#2735
zed monitors ZFS events. When a zevent is posted, zed will run any
scripts that have been enabled for the corresponding zevent class.
Multiple scripts may be invoked for a given zevent. The zevent
nvpairs are passed to the scripts as environment variables.
Events are processed synchronously by the single thread, and there is
no maximum timeout for script execution. Consequently, a misbehaving
script can delay (or forever block) the processing of subsequent
zevents. Plans are to address this in future commits.
Initial scripts have been developed to log events to syslog
and send email in response to checksum/data/io errors and
resilver.finish/scrub.finish events. By default, email will only
be sent if the ZED_EMAIL variable is configured in zed.rc (which is
serving as a config file of sorts until a proper configuration file
is implemented).
Signed-off-by: Chris Dunlap <cdunlap@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #2
