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mkosi switch to the newer -blockdev qemu option in systemd/mkosi#3557 [1], but
cache=unsafe is an option only -drive supports.
Since the qemu-system_x86-64 man page [2] says this, cache.writeback=on is the
default and mkosi setting the other two options to the values corresponding to
unsafe, it should be fine to drop the cache=unsafe option.
┌─────────────┬─────────────────┬──────────────┬────────────────┐
│ │ cache.writeback │ cache.direct │ cache.no-flush │
├─────────────┼─────────────────┼──────────────┼────────────────┤
│writeback │ on │ off │ off │
├─────────────┼─────────────────┼──────────────┼────────────────┤
│none │ on │ on │ off │
├─────────────┼─────────────────┼──────────────┼────────────────┤
│writethrough │ off │ off │ off │
├─────────────┼─────────────────┼──────────────┼────────────────┤
│directsync │ off │ on │ off │
├─────────────┼─────────────────┼──────────────┼────────────────┤
│unsafe │ on │ off │ on │
└─────────────┴─────────────────┴──────────────┴────────────────┘
[1] https://github.com/systemd/mkosi/pull/3557
[2] https://manpages.ubuntu.com/manpages/noble/en/man1/qemu-system-x86_64.1.html
(cherry picked from commit 759fdb3a35f96906de471b2c6c2bc2864dc25564)
Now that we have mkosi sandbox, meson runs with the mkosi tools tree
mounted (if one is used at all), so we can implement all the qemu feature
checks in meson itself, removing the need for mkosi configure scripts.
(cherry picked from commit ba29de84cf3967ac3b06707348493d5ddc65c7d8)
On CentOS Stream, the qemu binary is /usr/libexec/qemu-kvm so use
that if it's available.
(cherry picked from commit 34da8dd345935d461a62db5787cfbc35e8be2b4b)
We put a timeline of 257 to remove the old bash test runner so since
we're about to release 257, let's remove the old bash test runner in
favor of the meson + mkosi test runner.
This feature has been deprecated since QEMU 5.0 and finally removed in
QEMU 9.1 [0] which now causes issues when running the storage tests on
latest Arch:
------ testcase_long_sysfs_path: BEGIN ------
...
qemu-system-x86_64: -device virtio-blk-pci,drive=drive0,scsi=off,bus=pci_bridge25: Property 'virtio-blk-pci.scsi' not found
E: qemu failed with exit code 1
[0] a271b8d7b2
Using double quotes in f-strings only works from python 3.12 onwards.
Use single quotes to make sure python 3.9 works as well.
Also clean up quotes a little in general.
Trying to use bus pci slot 0 fails on aarch64 so let's use 1 instead.
The error:
"""
qemu-system-aarch64: -device virtio-blk-pci,drive=drive0,scsi=off,bus=pci_bridge25: Unsupported PCI slot 0 for standard hotplug controller. Valid slots are between 1 and 31.
"""
The virtio-scsi driver is available in the KVM/cloud kernel
packages provided by distributions whereas the megasas2 driver is
not. Let's switch to virtio-scsi so we can switch back to the KVM/cloud
kernel packages.
CIs set QEMU and nspawn timeouts by themselves which reflect their needs
and possibilities, so let's respect that value, instead of using one
pre-set value which might or might not work for all of them.
Both Ubuntu CI and CentOS CI set these values themselves.
We used both "qemu" and "QEMU", let's use the lower-case version everywhere
since it's also the name of the binary and the version that people are
most familiar with.
The stuff under test/ is not only for the integeration tests, but also
for various other test-related stuff, so adjust the docs a bit.
Since the TEST-64-UDEV-STORAGE fails are quite frequent now and the root
cause is yet to be discovered, let's add a kludge that attempts to retry
the test up to two more times in case it fails, so we don't
unnecessarily disturb CIs while the issue is being investigated.
Revert this commit once #21819 is sorted out.
Unfortunately, when checking the return/exit code using &&, ||, if,
while, etc., `set -e` is disabled for all nested functions as well,
which leads to incorrectly ignored errors, *sigh*.
Example:
```
set -eu
set -o pipefail
task() {
echo "task init"
echo "this should fail"
false
nonexistentcommand
echo "task end (we shouldn't be here)"
}
if ! task; then
echo >&2 "The task failed"
exit 1
else
echo "The task passed"
fi
```
```
$ bash test.sh
task init
this should fail
test.sh: line 10: nonexistentcommand: command not found
task end (we shouldn't be here)
The task passed
$ echo $?
0
```
But without the `if`, everything works "as expected":
```
set -eu
set -o pipefail
task() {
echo "task init"
echo "this should fail"
false
nonexistentcommand
echo "task end (we shouldn't be here)"
}
task
```
```
$ bash test.sh
task init
this should fail
$ echo $?
1
```
Wonderful.
