This command prints
RTNETLINK answers: Network is unreachable
to stderr if IP is not assigned yet, but that's the thing we are
checking for, so there's no point in showing the message.
We can drastically improve boot times on some machines, or BM or VM
shapes, if we send DHCP requests in parallel on all interfaces
Add ip=single-dhcp as a kernel boot parameter, to send DHCP requests in
parallel on all interfaces. Thus, DHCP on each interface is overlapped
thereby reducing boot times for multiple interface machines.
This can help reduce the boot time by 1 minute per interface.
In addition, we may also save another 40 secs delay per interface, if
the link on which we try to send DHCP is in DOWN state. This can be
reduced by giving the following kernel command line parameter while
booting - rd.net.timeout.carrier=<timeout>.
Added manpage for ip=single-dhcp with the caveat that it does not
apply to Network Manager or SUSE wicked.
Signed-off-by: Anjali Kulkarni <anjali.k.kulkarni@oracle.com>
suppress redundant calls to network setup
combine code for "no ip option directed at our interface" and
"No ip lines default to dhcp"
correct evaluation of return code for creating did-setup files
fix application of "load_ipv6" call to ipv6 setup only
Reference: bsc#1173402
The original behavior of $env{INTERFACE} was undocumented and changed in
the recent udev versions, breaking the ability to bring up networking
reliably. Switching to $name directive should fix this issue.
Related links:
- systemd/systemd#12700 (udev PR)
- systemd/systemd#12291 (related udev issue)
- systemd/systemd#14935 (this issue, udev side)
- #732 (this issue, dracut side)
Fixes: #732
Previously, we were doing `setup_net` from `ifup` for any setup that
wasn't DHCP, since those are already taken care of by `dhclient-script`.
The issue is that the case-statement we use to detect this doesn't catch
options like `ip=dhcp,dhcp6`.
Fix this by reworking the logic here to just check if a
`setup_net_$netif.sh` hook exists. If so, then we know that `setup_net`
will be called for this interface later.
This was causing issues in RHCOS which now ships with `ip=dhcp,dhcp6` to
support IPv6 environments[1]. The code here would make us do `setup_net`
pre-emptively which IIUC would then cause the initqueue to finish
earlier even if we had more udev netif events to process.
[1] https://github.com/coreos/coreos-assembler/pull/1067
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1803926
Otherwise we won't retry dhclient again on that interface. In
FCOS/RHCOS, we want to bake in `ip=dhcp,dhcp6` so we automatically try
getting a DHCPv6 lease if DHCPv4 failed.
Related: https://bugzilla.redhat.com/show_bug.cgi?id=1793591
This is a simple trick to honor RFC 3442:
If the DHCP server returns both a Classless Static Routes option and
a Router option, the DHCP client MUST ignore the Router option.
Signed-off-by: Jacob Wen <jian.w.wen@oracle.com>
since we handle the retries explicitly via rd.net.dhcp.retry
Without -1 if user sets ip=dhcp6 and there is no dhcp on the network,
dhclient seems to wait indefinitely, ignoring rd.net.timeout.dhcp
For the shell scripts, new environment variables were introduced.
dracutsysrootdir is the root directory, file existence checks use it.
DRACUT_LDCONFIG can override ldconfig with a different one that works
on the sysroot with foreign binaries.
DRACUT_LDD can override ldd with a different one that works
with foreign binaries.
DRACUT_TESTBIN can override /bin/sh. A cross-compiled sysroot
may use symlinks that are valid only when running on the target
so a real file must be provided that exist in the sysroot.
DRACUT_INSTALL now supports debugging dracut-install in itself
when run by dracut but without debugging the dracut scripts.
E.g. DRACUT_INSTALL="valgrind dracut-install or
DRACUT_INSTALL="dracut-install --debug".
DRACUT_COMPRESS_BZIP2, DRACUT_COMPRESS_LBZIP2, DRACUT_COMPRESS_LZMA,
DRACUT_COMPRESS_XZ, DRACUT_COMPRESS_GZIP, DRACUT_COMPRESS_PIGZ,
DRACUT_COMPRESS_LZOP, DRACUT_COMPRESS_ZSTD, DRACUT_COMPRESS_LZ4,
DRACUT_COMPRESS_CAT: All of the compression utilities may be
overridden, to support the native binaries in non-standard places.
DRACUT_ARCH overrides "uname -m".
SYSTEMD_VERSION overrides "systemd --version".
The dracut-install utility was overhauled to support sysroot via
a new option -r and fixes for clang-analyze. It supports
cross-compiler-ldd from
https://gist.github.com/jerome-pouiller/c403786c1394f53f44a3b61214489e6f
DRACUT_INSTALL_PATH was introduced so dracut-install can work with
a different PATH. In a cross-compiled environment (e.g. Yocto), PATH
points to natively built binaries that are not in the host's /bin,
/usr/bin, etc. dracut-install still needs plain /bin and /usr/bin
that are relative to the cross-compiled sysroot.
The hashmap pool allocate_tile/deallocate_tile code was removed
because clang-analyze showed errors in it. hashmap_copy was removed
because it wasn't used and clang-analyze showed errors in it.
DRACUT_INSTALL_LOG_TARGET and DRACUT_INSTALL_LOG_LEVEL were
introduced so dracut-install can use different settings from
DRACUT_LOG_TARGET and DRACUT_LOG_LEVEL.
Signed-off-by: Böszörményi Zoltán <zboszor@pr.hu>
Commmit 8a33e52e2f94 assumes that dracut's work is done if a root device
is found. This holds usually for booting computers, but it may be wrong
for other environments.
Only short-cut the waiting if $netroot is also set.
Fixes: 8a33e52e2f94 ("network: stop waiting for interfaces if root device is present")
References: bsc#1152006
David Tardon