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I am hitting the rate limit on a busy system with low resources, and
it stalls the boot process which is Very Bad (TM).
(cherry picked from commit 24a4542cfa)
Included in the backport because it's a workaround for an issue introduced
in v249.
(s) is just ugly with a vibe of DOS. In most cases just using the normal plural
form is more natural and gramatically correct.
There are some log_debug() statements left, and texts in foreign licenses or
headers. Those are not touched on purpose.
Previously, we'd iterate an entry array from start to end every time
we added an entry offset to it. To speed up this operation, we cache
the last entry array in the chain and how many items it contains.
This allows the addition of an entry to the chain to be done in
constant time instead of linear time as we don't have to iterate
the entire chain anymore every time we add an entry.
To do this, we move EntryItem out of journal-def.h and turn it into
a host only struct in native endian mode so we can still use it to
ship the necessary info around.
Aside from that, the changes are pretty simple, we introduce some
extra functions to access the right field depending on the mode and
convert all the other code to use those functions instead of
accessing the raw fields.
We also drop the unused entry item hash field in compact mode. We
already stopped doing anything with this field a while ago, now we
actually drop it from the format in compact mode.
We also add an environment variable $SYSTEMD_JOURNAL_COMPACT that
can be used to disable compact mode if needed (similar to
$SYSTEMD_JOURNAL_KEYED_HASH).
This adds a new flag in preparation for incompatible journal changes
which will be gated behind this flag. The max file size of journal
files in compact mode is limited to 4 GiB.
The text made it sound like breaking ABI in libsystemd is allowed with good reasons.
In fact, we plan never to do this, so make the language stronger.
Also remind people about distro forums for reporting bugs. Those are probably a
better place than systemd-devel for new users.
Also, add some missing articles and apostrophes, fix URLs, remove repeated phrases,
etc.
If mkosi.kernel/ exists, the mkosi script will try to build a kernel
image from it. We use the architecture defconfig as a base and add
our own extra configuration on top.
We also add some extra tooling to the build image required to build
the kernel and include some documentation in HACKING.md on how to
use this new feature.
To avoid the kernel sources from being copied into the build or
final image (which we don't want because it takes a while), we put
the mkosi.kernel/ directory in .gitignore and use
"SourceFileTransfer=mount" so that the sources are still accessible
in the build image.
The linked filter gives an up-to-date list of pull requests that need review.
(Yes, there's too many.) We used to set 'needs-review' label, but that is
not available to non-members, and also every pull requests which is not labeled
'reviewed/needs-rework'/'ci-fails/needs-rework'/'needs-rebase' can and should
be reviewed.
If this is merged, I'll drop the 'needs-review' label.
In 53c26db4da the meaning of $BOOT was
redefined. I think that's quite problematic, since the concept is
implemented in code and interface of bootctl. Thus, I think we should
stick to the original definition, which is: "where to *place* boot menu
entries" (as opposed to "where to *read* boot menu entries from").
The aforementioned change was done to address two things afaiu:
1. it focussed on a $BOOT as the single place to put boot entries in,
instead of mentioning that both ESP and $BOOT are expected to be
the source
2. it mentioned the /loader/ dir (as location for boot loader resources)
itself as part of the spec, which however only really makes sense in
the ESP. /loader/entries/ otoh makes sense in either the ESP or
$BOOT.
With this rework I try to address these two issues differently:
1. I intend to make clear the $BOOT is the "primary" place to put stuff
in, and is what should be mounted to /boot/.
2. The ESP (if different from $BOOT) is listed as "secondary" source to
read from, and is what should be mounted to /efi/. NB we now make the
distinction between "where to put" (which is single partition) and
"where to read from".
3. This drops any reference of the /loader/ dir witout the /entries/
suffix. Only the full /loader/entries/ dir (and its companion file
/loader/entries.srel) are now mentioned. Thus isolated /loader/
directory hence becomes irrelevant in the spec, and the fact that
sd-boot maintains some files there (and only in the ESP) is kept out
of the spec, because it is irrelevant to other boot loaders.
4. It puts back the suggestion to mount $BOOT to /boot/ and the ESP to
/efi/ (and suggests adding a symlink or bind mount if both are the
same partition). Why? Because the dirs are semantically unrelated:
it's OK and common to have and ESP but no $BOOT, hence putting ESP
inside of a useless, non-existing "ghost" dir /boot/ makes little
sense. More importantly though, because these partitions are
typically backed by VFAT we want to maintain them as an autofs, with
a short idle delay, so that the file systems are unmounted (and thus
fully clean) at almost all times. This doesn't work if they are
nested within each other, as the establishment of the inner autofs
would pin the outer one, making the excercise useless. Now I don't
think the spec should mention autofs (since that is an implementation
detail), but it should arrange things so that this specific, very
efficient, safe and robust implementation can be implemented.
The net result should be easy from an OS perspective:
1. *Put* boot loader entries in /boot/, always.
2. *Read* boot loader entries from both /boot/ and /efi/ -- if these are distinct.
3. The only things we define in the spec are /loader/entries/*.conf and
/EFI/Linux/*.efi in these two partitions (well, and the companion
file /loader/entries.srel
4. /efi/ and /boot/ because not nested can be autofs.
5. bootctl code and interface (in particular --esp-path= and
--boot-path=) match the spec again. `bootctl -x` and `bootctl -p`
will now print the path to $BOOT and ESP again, matching the concepts
in the spec again.
From the sd-boot perspective things are equally easy:
1. Read boot enrties from ESP and XBOOTLDR.
2. Maintain boot loader config/other resources in ESP only.
And that's it.
Fixes: #24247
In all other cases we have the older variant before the newer. And since we
generate some documentation tables from the header, this order is also visible
for users. Let's restore the order. This commit does
4565246911 in a slightly different fashion.
This documents that explicit `Before=`/`After=` dependencies can be
used to selectively override implicit ordering coming from default
dependencies. That allows for more granular control compared to the
already documented `DefaultDependencies=no` option.
The alternative approach came up in a discussion around the ordering
of `boot-complete.target`, so this also adds an explicit suggestion
in that direction to the "Automatic Boot Assessment" documentation.
Ref: https://lists.freedesktop.org/archives/systemd-devel/2022-September/048330.html
- Extra memory because ASAN needs it
- The environment variables to make the sanitizers more useful
- LD_PRELOAD because the ASAN DSO needs to be the first in the list
- The sanitizer library packages
- Disable syscall filters because they interfere with ASAN
- Disable systemd-hwdb-update because it's super slow when systemd-hwdb
is built with sanitizers
- Take the value for meson's b_sanitize option from the SANITIZERS
environment variable
