When using Storage=none there is no point in collecting all the
information just to throw them away. After this change journald
consumes a lot less CPU time when only forwarding messages.
The addition of .DELETE_ON_ERROR will lead to the removal of the
test-suite.log in case of a test failure. Mark the rule as PRECIOUS
to keep that file around.
$ systemctl --user status hoohoo
hoohoo.service
Loaded: loaded (/home/zbyszek/.config/systemd/user/hoohoo.service; static)
Active: inactive (dead)
start condition failed at Tue 2013-06-25 18:08:42 EDT; 1s ago
ConditionPathExists=/tmp/hoo was not met
Full information is exported over D-Bus:
[(condition, trigger, negate, param, state),...]
where state is one of "failed" (<0), "untested" (0), "OK" (>0).
I've decided to use 0 for "untested", because it might be useful to
differentiate different types of failure later on, without breaking
compatibility.
systemctl shows the failing condition, if there was a non-trigger
failing condition, or says "none of the trigger conditions were met",
because there're often many trigger conditions, and they must all
fail for the condition to fail, so printing them all would consume
a lot of space, and bring unnecessary attention to something that is
quite low-level.
Instead of :-0, :1, :5, etc., use -0, 1 or +1, 5, etc. For BOOT_ID+OFFSET,
use BOOT_ID+offset or BOOT_ID-offset (either + or - is required).
Also make error handling a bit more robust and verbose.
Modify the man page to describe the most common case (-b) first,
and the second most common case (-b -1) second.
"not-found" is a recently added load state and was previously just a
special case of "error". Since it also indicates a load error we should
also highlight it red, the same way as "error" was treated before.
Based on a patch by Kay Sievers.
When a dead device nodes is tagged with "uaccess" using the static_node mechanism,
it's ACL's are managed by logind in the same way as "live" device nodes.
This allows in particular /dev/snd/{seq,timer} to cause modules to be loaded
on-demand when accessed by a non-privileged user.
Based on a patch by Kay Sievers.
A tag is exported at boot as a symlinks to the device node in the folder
/run/udev/static_node-tags/<tagname>/, if the device node exists.
These tags are cleaned up by udevadm info --cleanup-db, but are otherwise
never removed.
If you have a ASCII only terminal, there is no way to set the charmap to
ANSI_X3.4-1968, other than using LC_CTYPE=C.
We don't want to assume a UTF-8 capable terminal in this case and only
do so, if LANG, LC_ALL and LC_CTYPE are unset.
A few asserts are replaced with 'return -EINVAL'. I think that
assert should not be used to check argument in public functions.
Fields in struct sd_journal are rearranged to make it less
swiss-cheesy.
Jan: test-tables fails on my system. The one it's failing on is:
syscall: 222 → (null) → -1
... and indeed, our own tables should not have holes, but syscall
tables certainly might.
The list and descriptions of valid output options was difficult to read,
so break up the long block of text into discrete man page list items to
improve readability.
Hi,
I redid the boot ID look up to use enumerate_unique.
This is quite fast if the cache is warm but painfully slow if
it isn't. It has a slight chance of returning the wrong order if
realtime clock jumps around.
This one has to do n searches for every boot ID there is plus
a sort, so it depends heavily on cache hotness. This is in contrast
to the other way of look-up through filtering by a MESSAGE_ID,
which only needs about 1 seek + whatever amount of relative IDs
you want to walk.
I also have a linked-list + (in-place) mergesort version of this
patch, which has pretty much the same runtime. But since this one
is using libc sorting and armortized allocation, I prefer this
one.
To summarize: The MESSAGE_ID way is a *lot* faster but can be
incomplete due to rotation, while the enumerate+sort will find
every boot ID out there but will be painfully slow for large
journals and cold caches.
You choose :P
Jan
In a User-Mode Linux session:
$ systemd-detect-virt
none
Although it is possible to reliably detect virtualization:
$ cat /proc/cpuinfo
processor : 0
vendor_id : User Mode Linux
model name : UML
mode : skas
host : Linux kytes 3.11.0-rc1-00009-ge5fd680 (...)
bogomips : 7007.43
So, grep for the string "\nvendor_id\t: User Mode Linux\n" in
/proc/cpuinfo, and say "uml" when asked.
Kay Sievers