Resolves: bz2076416
Upstream: Fedora
Conflict: None
commit 523cda8f34
Author: Coiby Xu <coxu@redhat.com>
Date: Fri Nov 25 12:07:25 2022 +0800
Don't run kdump_check_setup_iscsi in a subshell in order to collect needed
network interfaces
Currently, dumping to iSCSI target fails because the global array
(unique_netifs) that stores the network interfaces needed by kdump is
empty. The root cause is change of the array made in a subshell (a child
process) is inaccessible to the parent process. So don't run
kdump_check_setup_iscsi in a subshell.
Fixes: 63c3805c ("Set up kdump network by directly copying NM connection profile to initrd")
Signed-off-by: Coiby Xu <coxu@redhat.com>
Reviewed-by: Pingfan Liu <piliu@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Resolves: bz2076416
Upstream: Fedora
Conflict: None
commit b5577c163a
Author: Coiby Xu <coxu@redhat.com>
Date: Thu Sep 23 15:26:00 2021 +0800
Simplify setup_znet by copying connection profile to initrd
/usr/lib/udev/ccw_init [1] shipped by s390utils extracts the values of
SUBCHANNELS, NETTYPE and LAYER2 from /etc/sysconfig/network-scripts/ifcfg-*
or /etc/NetworkManager/system-connections/*.nmconnection to activate znet
network device. If the connection profile is copied to initrd,
there is no need to set up the "rd.znet" dracut cmdline parameter.
There are two cases addressed by this commit,
1. znet network interface is a slave of bonding/teaming/vlan/bridging
network. The connection profile has been copied to initrd by
kdump_copy_nmconnection_file and it contains the info needed by
ccw_init.
2. znet network interface is a slave of bonding/teaming/vlan/bridging
network. The corresponding ifcfg-*/*.nmconnection file may not contain
info like SUBCHANNELS [2]. In this case, copy the ifcfg-*/*.nmconnection
file that has this info to the kdump initrd. Also to prevent the copied
connection profile from being chosen by NM, set
connection.autoconnect=false for this connection profile.
With this implementation, there is also no need to check if znet is
used beforehand.
Note
1. ccw_init doesn't care if SUBCHANNELS, NETTYPE and LAYER2 comes from
an active NM profile or not. If an inactive NM profile contains this
info, it needs to be copied to the kdump initrd as well.
2. "rd.znet_ifname=$_netdev:${SUBCHANNELS}" is no longer needed needed
because now there is no renaming of s390x network interfaces when
reusing NetworkManager profiles. rd.znet_ifname was introduced in
commit ce0305d ("Add a new option 'rd.znet_ifname' in order to use it
in udev rules") to address the special case of non-persistent
MAC address by renaming a network interface by SUBCHANNELS.
[1] https://src.fedoraproject.org/rpms/s390utils/blob/rawhide/f/ccw_init
[2] https://bugzilla.redhat.com/show_bug.cgi?id=2064708
Signed-off-by: Coiby Xu <coxu@redhat.com>
Reviewed-by: Thomas Haller <thaller@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Resolves: bz2076416
Upstream: Fedora
Conflict: None
commit 568623e69a
Author: Coiby Xu <coxu@redhat.com>
Date: Thu Sep 23 14:25:01 2021 +0800
Address the cases where a NIC has a different name in kdump kernel
A NIC may get a different name in the kdump kernel from 1st kernel
in cases like,
- kernel assigned network interface names are not persistent e.g. [1]
- there is an udev rule to rename the NIC in the 1st kernel but the
kdump initrd may not have that rule e.g. [2]
If NM tries to match a NIC with a connection profile based on NIC name
i.e. connection.interface-name, it will fail the above bases. A simple
solution is to ask NM to match a connection profile by MAC address.
Note we don't need to do this for user-created NICs like vlan, bridge and
bond.
An remaining issue is passing the name of a NIC via the kdumpnic dracut
command line parameter which requires passing ifname=<interface>:<MAC> to
have fixed NIC name. But we can simply drop this requirement. kdumpnic
is needed because kdump needs to get the IP by NIC name and use the IP
to created a dumping folder named "{IP}-{DATE}". We can simply pass the
IP to the kdump kernel directly via a new dracut command line parameter
kdumpip instead. In addition to the benefit of simplifying the code,
there are other three benefits brought by this approach,
- make use of whatever network to transfer the vmcore. Because as long
as we have the network to we don't care which NIC is active.
- if obtained IP in the kdump kernel is different from the one in the
1st kernel. "{IP}-{DATE}" would better tell where the dumped vmcore
comes from.
- without passing ifname=<interface>:<MAC> to kdump initrd, the
issue of there are two interfaces with the same MAC address for
Azure Hyper-V NIC SR-IOV [3] is resolved automatically.
[1] https://bugzilla.redhat.com/show_bug.cgi?id=1121778
[2] https://bugzilla.redhat.com/show_bug.cgi?id=810107
[3] https://bugzilla.redhat.com/show_bug.cgi?id=1962421
Signed-off-by: Coiby Xu <coxu@redhat.com>
Reviewed-by: Thomas Haller <thaller@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Resolves: bz2076416
Upstream: Fedora
Conflict: None
commit 586fe410aa
Author: Coiby Xu <coxu@redhat.com>
Date: Thu Sep 9 11:50:00 2021 +0800
Reduce kdump memory consumption by not letting NetworkManager manage unneeded network interfaces
By default, NetworkManger will manage all the network interfaces and
try to set interface IFF_UP to get carrier state. Regardless of whether
the network interface is connected to a cable or not, the NIC driver
will allocate memory resources for e.g. ring buffers when setting IFF_UP.
This could be a waste of memory. For example it's found i40e consumes ~15GB
on a power machine. On this machine, i40e manages four interfaces but only
one interface is valid. This patch use "managed=false" to tell
NetworkManager to not manage network interfaces that are not needed by
kdump by putting 10-kdump-netif_allowlist.conf in the initramfs.
Signed-off-by: Coiby Xu <coxu@redhat.com>
Reviewed-by: Thomas Haller <thaller@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Resolves: bz2076416
Upstream: Fedora
Conflict: None
commit 63c3805c48
Author: Coiby Xu <coxu@redhat.com>
Date: Fri Sep 17 13:02:07 2021 +0800
Set up kdump network by directly copying NM connection profile to initrd
This patch setup kdump network by directly copying NM connection profile(s)
for different network setup including bond, bridge, vlan, and team. For
vlan network, rename phydev to parent_netif to improve code readability.
With the new approach, the related code to build up dracut cmdline
parameter such rd.route, ip and etc can be cleaned up. And there is no
need to setup dns when copying .nmconnection directly to initrd
either. Note the bootdev dracut command line parameter is only used by
dracut's 35network-legacy and network-manager doesn't use it, remove
related code as well.
Note
1. kdump_setup_vlan/bond/... are no longer called in subshells in order
to modify global variables like unique_netifs
2. The original kdump_install_net is renamed to better reflect its
current function
Signed-off-by: Coiby Xu <coxu@redhat.com>
Reviewed-by: Thomas Haller <thaller@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Resolves: bz2076416
Upstream: Fedora
Conflict: None
commit 62355ebe5a
Author: Coiby Xu <coxu@redhat.com>
Date: Fri Sep 23 22:16:49 2022 +0800
Stop dracut 35network-manager from running nm-initrd-generator
kexec-tools depends on dracut's 35network-manager module which will
call nm-initrd-generator. We don't want nm-initrd-generator to generate
connection profiles since we will copy them from 1st kernel to
kdump kernel initramfs. NetworkManager >= 1.35.2 won't generate connection
profiles if there's a connection dir with rd.neednet. For Fedora/RHEL,
this connection dir is /etc/NetworkManager/system-connections. For the
details, please refer to the NetworkManager commit 79885656d3
("initrd: don't add a connection if there's a connection dir with
rd.neednet") [1]. Before the release of NetworkManager >= 1.35.2, we
need to mask /usr/libexec/nm-initrd-generator.
[1] https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/1010
Signed-off-by: Coiby Xu <coxu@redhat.com>
Reviewed-by: Thomas Haller <thaller@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Resolves: bz2076416
Upstream: Fedora
Conflict: None
commit 6b586a9036
Author: Coiby Xu <coxu@redhat.com>
Date: Thu Sep 22 22:08:43 2022 +0800
Apply the timeout configuration of nm-initrd-generator
nm-wait-online-initrd.service installed by dracut's 35-networkmanager
module calls nm-online with "-s" which means it returns immediately when
NetworkManager logs "startup complete" after certain timeouts are
reached. "startup complete" doesn't necessarily network connectivity has
been established. nm-initrd-generator has a set of timeouts that in most
of cases when applied, "startup-complete" means network connectivity has
been established. So apply it when setting up kdump network.
Suggested-by: Thomas Haller <thaller@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Reviewed-by: Thomas Haller <thaller@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Resolves: bz2076416
Upstream: Fedora
Conflict: None
commit 9dfcacf72d
Author: Coiby Xu <coxu@redhat.com>
Date: Thu Sep 8 17:06:19 2022 +0800
Determine whether IPv4 or IPv6 is needed
According to `man nm-online`,
"By default, connections have the ipv4.may-fail and
ipv6.may-fail properties set to yes; this means that
NetworkManager waits for one of the two address families to
complete configuration before considering the connection
activated. If you need a specific address family configured
before network-online.target is reached, set the corresponding
may-fail property to no."
If a NIC has an IPv4 or IPv6 address, set the corresponding may-fail
property to no. Otherwise, dumping vmcore over IPv6 could fail because
only IPv4 network is ready or vice versa.
Also disable IPv6 if only IPv4 is used and vice versa.
Signed-off-by: Coiby Xu <coxu@redhat.com>
Reviewed-by: Thomas Haller <thaller@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Resolves: bz2076416
Upstream: Fedora
Conflict: None
commit d25b1ee31c
Author: Coiby Xu <coxu@redhat.com>
Date: Thu Sep 9 11:35:52 2021 +0800
Add functions to copy NetworkManage connection profiles to the initramfs
Each network interface is manged by a NM connection. Given a list of
network interface names, copy the NetworkManager (NM) connection
profiles i.e. .nmconnection files to the kdump initramfs.
Before copying a connection file, clone it to automatically convert a
legacy ifcfg-*[1] file to a .nmconnection file and for the convenience of
editing the connection profile.
[1] https://fedoraproject.org/wiki/Changes/NetworkManager_keyfile_instead_of_ifcfg_rh
Signed-off-by: Coiby Xu <coxu@redhat.com>
Reviewed-by: Thomas Haller <thaller@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Related: bz2076416
Upstream: Fedora
Conflict: None
commit b7e58619d1
Author: Coiby Xu <coxu@redhat.com>
Date: Mon Sep 13 22:13:44 2021 +0800
Fix error for vlan over team network interface
6f9235887f ("module-setup.sh: enable
vlan on team interface") skips establishing teaming network by mistake.
Although it could use one of slave netifs to establish connection
to transfer vmcore to remote fs, it breaks the implicit assumption of
creating an identical network topology to the 1st kernel.
Fixes: 6f92358 ("module-setup.sh: enable vlan on team interface")
Signed-off-by: Coiby Xu <coxu@redhat.com>
Reviewed-by: Thomas Haller <thaller@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
upstream: fedora
resolves: bz2083475
conflict: Yes, use "grep -q <<< $(cmd)" instead of
"cmd | grep -q", because the latter will
fail with strange reason.
commit f11721077a
Author: Tao Liu <ltao@redhat.com>
Date: Sat Oct 8 15:41:41 2022 +0800
Add dependency of dracut lvmthinpool-monitor module
The 80lvmthinpool-monitor module is needed for monitor and
autoextend the size of thin pool in 2nd kernel. The module was
integrated in dracut version 057.
If lvmthinpool-monitor module is not found, we will print a warning.
Because we don't want to block the kdump process when the thin pool
capacity is enough and no monitor-and-autoextend actually needed.
Signed-off-by: Tao Liu <ltao@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2085347
conflict: yes, small conflict due to patch
"kdumpctl: drop DUMP_TARGET variable" not
backported to rhel9.
commit c743881ae6
Author: Tao Liu <ltao@redhat.com>
Date: Fri Sep 23 18:13:11 2022 +0800
virtiofs support for kexec-tools
This patch add virtiofs support for kexec-tools by introducing a new option
for /etc/kdump.conf:
virtiofs myfs
Where myfs is a variable tag name specified in qemu cmdline
"-device vhost-user-fs-pci,tag=myfs".
The patch covers the following cases:
1) Dumping VM's vmcore to a virtiofs shared directory;
2) When the VM's rootfs is a virtiofs shared directory and dumping the
VM's vmcore to its subdirectory, such as /var/crash;
3) The combination of case 1 & 2: The VM's rootfs is a virtiofs shared
directory and dumping the VM's vmcore to another virtiofs shared
directory.
Case 2 & 3 need dracut >= 057, otherwise VM cannot boot from virtiofs
shared rootfs. But it is not the issue of kexec-tools.
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
Resolves: bz2023165
Upstream: Fedora
Conflict: None
commit a3c1e70fc1c0e4bab4149f617cbd629e89bd5ca0 (HEAD -> main)
Author: Pingfan Liu <piliu@redhat.com>
Date: Wed Dec 8 10:46:38 2021 +0800
ppc64/ppc64le: drop cpu online rule in 40-redhat.rules in kdump initramfs
Onlining secondary cpus breaks kdump completely on KVM on Power hosts
Though we use maxcpus=1 by default but 40-redhat.rules will bring up all
possible cpus by default.
Thus before we get the kernel fix and the systemd rule fix let's remove
the cpu rule in 40-redhat.rules for ppc64/ppc64le kdump initramfs.
This is back ported from RHEL, and original credit goes to Dave Young
<dyoung@redhat.com>
Signed-off-by: Pingfan Liu <piliu@redhat.com>
Signed-off-by: Pingfan Liu <piliu@redhat.com>
upstream: fedora
resolves: bz2003832
conflict: none
commit 6936fbc1b2
Author: Coiby Xu <coxu@redhat.com>
Date: Mon Nov 1 14:13:16 2021 +0800
fix broken extra_bins when installing multiple binaries
When there more than one binaries, quoting "$val" would make
dracut-install treat multiple binaries as one binary. Take
"extra_bins /usr/sbin/ping /usr/sbin/ip" as an example, the
following error would occur when building initrd,
dracut-install: ERROR: installing '/usr/sbin/ping /usr/sbin/ip'
dracut: FAILED: /usr/lib/dracut/dracut-install -D /var/tmp/dracut.ODrioZ/initramfs -a /usr/sbin/ping /usr/sbin/ip
Fix it by not quoting the variable and bypassing SC2086 shellcheck.
Fixes: commit 86538ca6e2
("bash scripts: fix variable quoting issue")
Acked-by: Tao Liu <ltao@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict: none
commit 58d3e6db3a
Author: Kairui Song <kasong@redhat.com>
Date: Wed Sep 8 15:20:42 2021 +0800
kdump-lib.sh: rework nmcli related functions
This fixes word splitting issue with nmcli args. Current kexec-tools
scripts won't call nmcli with correct arguments when there are space in
network interface name.
nmcli expects multiple parameters, but get_nmcli_value_by_field only
accepts two params and depends on shell word splitting to split the
_nm_show_cmd into multiple params, which is very fragile.
So switch the param order, simplified this function and now multiple
params can be used properly.
And get_nmcli_connection_show_cmd_by_ifname returns multiple
nmcli params in a single variable, it depend on shell word splitting to
split the words when calling nmcli. But this is very fragile and break
easily when there are any special character in the connection path.
This function is only introduced to get and cache the nmcli command
which contains the "connection name".
Actually only cache the "connection path" is enough. Callers should
just call get_nmcli_connection_apath_by_ifname to cache the path, and
a new helper get_nmcli_field_by_conpath is introduced here to get value
from nmcli. This way "connection path" can contain any character.
Also get rid of another nmcli_cmd usage in
get_nmcli_connection_apath_by_ifname which stores multiple params in a
single bash variable separated by space.
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict: none
commit b1c794a2cf
Author: Kairui Song <kasong@redhat.com>
Date: Tue Sep 14 03:00:48 2021 +0800
dracut-kdump.sh: Use stat instead of ls to get vmcore size
ls output is fragile, so use stat instead.
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict: none
commit e7118d1de8
Author: Kairui Song <kasong@redhat.com>
Date: Mon Aug 2 00:50:22 2021 +0800
Merge kdump-error-handler.sh into kdump.sh
kdump-error-handler.sh does nothing except calling three functions,
it can be easily merged into kdump.sh by using a parameter to run the
error handling routine.
kdump-lib-initramfs.sh was created to hold the three shared functions
and related code, so by merging these two files, kdump-lib-initramfs.sh
can be simplified by a lot.
Following up commits will clean up kdump-lib-initramfs.sh.
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict: none
commit a5faa052d4
Author: Kairui Song <kasong@redhat.com>
Date: Tue Sep 14 03:25:46 2021 +0800
kdump-lib-initramfs.sh: prepare to be a POSIX compatible lib
Move all functions needed in the second kernel from kdump-lib.sh
to kdump-lib-initramfs.sh, and update shebang headers.
Now, kdump-lib-initramfs.sh is an independent lib script, no longer
depend on kdump-lib.sh, and kdump-lib.sh is no longer needed for
the second kernel.
In later commits, functions in kdump-lib-initramfs.sh will be reworked
to be POSIX compatible, kdump-lib.sh will contain bash only functions.
POSIX shell have very limited features, eg. `local` keyword doesn't
exist in POSIX but we rely on that heavily. So kdump-lib.sh will
use bash syntax and contain the most complex helper and codes.
kdump-lib-initramfs.sh will contain the minimum set of helpers,
and be shared by both the first and second kernel.
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict:
function load_kdump_kernel_key() not exist in rhel9,
so related patch hunk is removed.
commit 0e4b66b1ab
Author: Kairui Song <kasong@redhat.com>
Date: Tue Sep 14 02:25:40 2021 +0800
bash scripts: reformat with shfmt
This is a batch update done with:
shfmt -s -w mkfadumprd mkdumprd kdumpctl *-module-setup.sh
Clean up code style and reduce code base size, no behaviour change.
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict:
function remove_kdump_kernel_key() not presented in rhel9,
so related patch hunk are removed.
commit 86538ca6e2
Author: Kairui Song <kasong@redhat.com>
Date: Wed Sep 8 17:21:41 2021 +0800
bash scripts: fix variable quoting issue
Fixed quoting issues found by shellcheck, no feature
change. This should fix many errors when there is space
in any shell variables, eg. dump target's name/path/id.
False positives are marked with "# shellcheck disable=SCXXXX", for
example, args are expected to split so it should not be quoted.
And replaced some `cut -d ' ' -fX` with `awk '{print $X}'` since cut
is fragile, and doesn't work well with any quoted strings that have
redundant space.
Following quoting related issues are fixed (check the link
for example code and what could go wrong):
https://github.com/koalaman/shellcheck/wiki/SC2046https://github.com/koalaman/shellcheck/wiki/SC2053https://github.com/koalaman/shellcheck/wiki/SC2068https://github.com/koalaman/shellcheck/wiki/SC2086https://github.com/koalaman/shellcheck/wiki/SC2206
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict: none
commit 8b4b7bf808
Author: Coiby Xu <coxu@redhat.com>
Date: Fri Mar 26 10:22:09 2021 +0800
Don't use die in dracut-module-setup.sh
die (in dracut-lib.sh) is supposed to be used in the initramfs environment.
Signed-off-by: Coiby Xu <coxu@redhat.com>
Acked-by: Kairui Song <kasong@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict:
function load_kdump_kernel_key() not presented in rhel9,
so related patch hunk are removed.
commit 70978c00e5
Author: Kairui Song <kasong@redhat.com>
Date: Wed Sep 8 17:20:51 2021 +0800
bash scripts: replace '[ ]' with '[[ ]]' for bash scripts
kdumpctl, mkdumprd, *-module-setup.sh only target bash, since they
only run in first kernel and depend on dracut, and dracut depends
on bash. So use '[[ ]]' to replace '[ ]'.
This is a batch update done with following command:
`sed -i -e 's/\(\s\)\[\s\([^]]*\)\s\]/\1\[\[\ \2 \]\]/g' kdumpctl, mkdumprd, *-module-setup.sh`
and replaced [ ... -a ... ] with [[ ... ]] && [[ ... ]] manually.
See https://tldp.org/LDP/abs/html/testconstructs.html for more details
on '[[ ]]', it's more versatile, safer, and slightly faster than '[ ]'.
This will also help shfmt to clean up the code in later commits.
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict: none
commit c6021648f1
Author: Kairui Song <kasong@redhat.com>
Date: Fri Mar 19 18:21:11 2021 +0800
Don't iterate the whole /sys/devices just to find drm device
On some large systems, /sys/devices is huge and it's not a wise idea to
iterate it. `find` may cause tremendous contention on the kernfs_mutex
when there are already stress on /sys, and it will perform very very
poorly.
Simply check if drm class presents should be good enough.
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Pingfan Liu <piliu@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict: none
commit 54cc5c44be
Author: Kairui Song <kasong@redhat.com>
Date: Wed Sep 8 01:48:52 2021 +0800
bash scripts: use $(...) notation instead of legacy `...`
This is a batch update done with following command:
`sed -i -e 's/`\([^`]*\)`/\$(\1)/g' mkfadumprd mkdumprd \
kdumpctl dracut-module-setup.sh dracut-fadump-module-setup.sh \
dracut-early-kdump-module-setup.sh`
And manually converted some corner cases. This fixes
all related issues detected by shellcheck.
Make it easier to do clean up in later commits.
Check following link for reasons to switch to the new syntax:
https://github.com/koalaman/shellcheck/wiki/SC2006
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict: none
commit a416930706
Author: Kairui Song <kasong@redhat.com>
Date: Wed Aug 4 15:50:30 2021 +0800
bash scripts: always use "read -r"
This helps to strip spaces and avoid mangling backslashes:
https://github.com/koalaman/shellcheck/wiki/SC2162
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict: none
commit fdfad3102e
Author: Kairui Song <kasong@redhat.com>
Date: Wed Aug 4 15:46:27 2021 +0800
bash scripts: get rid of unnecessary sed calls
Use bash builtin string substitution instead, as suggested by:
https://github.com/koalaman/shellcheck/wiki/SC2001
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict: none
commit c4d85142be
Author: Kairui Song <kasong@redhat.com>
Date: Wed Aug 4 15:18:59 2021 +0800
bash scripts: get rid of expr and let
As suggested by:
https://github.com/koalaman/shellcheck/wiki/SC2219
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict:
load_kdump_kernel_key() didn't present in rhel9,
so removed the patch for it.
commit 6d45257cc1
Author: Kairui Song <kasong@redhat.com>
Date: Wed Aug 4 15:14:00 2021 +0800
bash scripts: remove useless cat
Some `cat` calls are useless, remove them to make it cleaner.
See: https://github.com/koalaman/shellcheck/wiki/SC2002
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict: none
commit 3b0157197b
Author: Kairui Song <kasong@redhat.com>
Date: Wed Sep 8 15:15:44 2021 +0800
dracut-module-setup.sh: remove surrounding $() for subshell
Some functions are executed in subshell to avoid variable environment
pollution. But the surrounding $() is not needed, and it may lead to
executing output which is unexpected here.
See: https://github.com/koalaman/shellcheck/wiki/SC2091
Signed-off-by: Kairui Song <kasong@redhat.com>
Suggested-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict: none
commit 67e559a6b9
Author: Kairui Song <kasong@redhat.com>
Date: Wed Aug 4 16:29:55 2021 +0800
dracut-module-setup.sh: make iscsi check fail early if cd failed
As suggested by:
https://github.com/koalaman/shellcheck/wiki/SC2164
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict: none
commit 3b2fa982bb
Author: Kairui Song <kasong@redhat.com>
Date: Wed Aug 4 16:16:44 2021 +0800
dracut-module-setup.sh: fix a loop over ls issue
Iterating over ls output is fragile:
https://github.com/koalaman/shellcheck/wiki/SC2045
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict: none
commit dfe7555323
Author: Kairui Song <kasong@redhat.com>
Date: Wed Aug 4 15:51:34 2021 +0800
dracut-module-setup.sh: fix a ambiguous variable reference
Wrap the variable with {...}, else it may get interpreted as array due
to the '[' char next to it.
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict: none
commit da3ad9cbda
Author: Kairui Song <kasong@redhat.com>
Date: Wed Aug 4 15:47:43 2021 +0800
dracut-module-setup.sh: use "*" to expend array as string
As suggested by:
https://github.com/koalaman/shellcheck/wiki/SC2199
The array is not quoted here but implicitly concatenate still happens,
could be harmless but shellcheck complains about it so fix it.
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict: none
commit 09ccf88405
Author: Kairui Song <kasong@redhat.com>
Date: Mon Aug 16 23:25:14 2021 +0800
kdump-lib.sh: add a config value retrive helper
Add a helper kdump_get_conf_val to replace get_option_value.
It can help cover more corner cases in the code, like when there are
multiple spaces in config file, config value separated by a tab,
heading spaces, or trailing comments.
And this uses "sed group command" and "sed hold buffer", make it much
faster than previous `grep <config> | tail -1`.
This helper is supposed to provide a universal way for kexec-tools
scripts to read in config value. Currently, different scripts are
reading the config in many different fragile ways.
For example, following codes are found in kexec-tools script code base:
1. grep ^force_rebuild $KDUMP_CONFIG_FILE
echo $_force_rebuild | cut -d' ' -f2
2. grep ^kdump_post $KDUMP_CONFIG_FILE | cut -d\ -f2
3. awk '/^sshkey/ {print $2}' $conf_file
4. grep ^path $KDUMP_CONFIG_FILE | cut -d' ' -f2-
1, 2, and 4 will fail if the space is replaced by, e.g. a tab
1 and 2 might fail if there are multiple spaces between config name
and config value:
"kdump_post /var/crash/scripts/kdump-post.sh"
A space will be read instead of config value.
1, 2, 3 will fail if there are space in file path, like:
"kdump_post /var/crash/scripts dir/kdump-post.sh"
4 will fail if there are trailing comments:
"path /var/crash # some comment here"
And all will fail if there are heading space,
" path /var/crash"
And all will most likely cause problems if the config file contains
the same option more than once.
And all of them are slower than the new sed call. Old get_option_value
is also very slow and doesn't handle heading space.
Although we never claim to support heading space or tailing comments
before, it's harmless to be more robust on config reading, and many
conf files in /etc support heading spaces. And have a faster and
safer config reading helper makes it easier to clean up the code.
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict: none
commit a0282ab22c
Author: Kairui Song <kasong@redhat.com>
Date: Tue Aug 3 19:49:51 2021 +0800
kdump-lib.sh: add a config format and read helper
Add a helper `kdump_read_conf` to replace read_strip_comments.
`kdump_read_conf` does a few more things:
- remove trailing spaces.
- format the content, remove duplicated spaces between name and value.
- read from KDUMP_CONFIG_FILE (/etc/kdump.conf) directly, avoid pasting
"/etc/kdump.conf" path everywhere in the code.
- check if config file exists, just in case.
Also unify the environmental variable, now KDUMP_CONFIG_FILE stands for
the default config location.
This helps avoid some shell pitfalls about spaces when reading config.
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
Resolves: bz1982474
Upstream: Fedora
Conflict: None
commit b2bbb54d89
Author: Coiby Xu <coxu@redhat.com>
Date: Thu Jul 15 09:18:33 2021 +0800
Check the existence of /sys/bus/ccwgroup/devices/*/online beforehand
On s390x KVM machines, the following errors would show when building kdump
initramfs that dumps vmcore to a remote target,
$ kdumpctl rebuild
/usr/lib/dracut/modules.d/99kdumpbase/module-setup.sh: line 475: /sys/bus/ccwgroup/devices/online: No such file or directory
/usr/lib/dracut/modules.d/99kdumpbase/module-setup.sh: line 476: [: -ne: unary operator expected
This happens because s390x KVM machines use virtual network and
/sys/bus/ccwgroup/devices/ exists but is empty. Fix it by check
the existence of file "/sys/bus/ccwgroup/devices/*/online".
Fixes: commit 7d47251568
("Iterate /sys/bus/ccwgroup/devices to tell if we should set up rd.znet")
BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1982474
Reported-by: Jie Li <jieli@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Acked-by: Kairui Song <kasong@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Resolves: bz1924115
Conflict: None
Upstream: Fedora
commit fa9201b240 (devel)
Author: Hari Bathini <hbathini@linux.ibm.com>
Date: Wed Jun 23 20:06:48 2021 +0530
fadump: isolate fadump initramfs image within the default one
In case of fadump, the initramfs image has to be built to boot into
the production environment as well as to offload the active crash dump
to the specified dump target (for boot after crash). As the same image
would be used for both boot scenarios, it could not be built optimally
while accommodating both cases.
Use --include to include the initramfs image built for offloading
active crash dump to the specified dump target. Also, introduce a new
out-of-tree dracut module (99zz-fadumpinit) that installs a customized
init program while moving the default /init to /init.dracut. This
customized init program is leveraged to isolate fadump image within
the default initramfs image by kicking off default boot process
(exec /init.dracut) for regular boot scenario and activating fadump
initramfs image, if the system is booting after a crash.
If squash is available, ensure default initramfs image is also built
with squash module to reduce memory consumption in capture kernel.
Signed-off-by: Hari Bathini <hbathini@linux.ibm.com>
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Kairui Song <kasong@redhat.com>
Signed-off-by: Kairui Song <kasong@redhat.com>
Related: bz1977543
Upstream: Fedora
Conflict: None
commit ad6f60d70d
Author: Coiby Xu <coxu@redhat.com>
Date: Mon Jun 28 18:37:11 2021 +0800
fix format issue in find_online_znet_device
Change spaces to tab to fix alignment issue.
Fixes: commit 7d47251568
("Iterate /sys/bus/ccwgroup/devices to tell if we should set up rd.znet")
Signed-off-by: Coiby Xu <coxu@redhat.com>
Acked-by: Kairui Song <kasong@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Resolves: bz1977543
Upstream: Fedora
Conflict: None
commit 03f9b91351
Author: Coiby Xu <coxu@redhat.com>
Date: Mon Jun 28 18:37:10 2021 +0800
check the existence of /sys/bus/ccwgroup/devices before trying to find online network device
/sys/bus/ccwgroup/devices doesn't exist for non-s390x machines which leads to
the warning "find: '/sys/bus/ccwgroup/devices': No such file or directory".
This warning can be eliminated by checking the existence of
"/sys/bus/ccwgroup/devices" beforehand.
Fixes: commit 7d47251568
("Iterate /sys/bus/ccwgroup/devices to tell if we should set up rd.znet")
Reported-by: Ruowen Qin <ruqin@redhat.com>
BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1974618
Signed-off-by: Coiby Xu <coxu@redhat.com>
Acked-by: Kairui Song <kasong@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Resolves: bz1941905
Upstream: Fedora
Conflict: None
commit 7d47251568
Author: Coiby Xu <coxu@redhat.com>
Date: Mon Jun 7 07:26:03 2021 +0800
Iterate /sys/bus/ccwgroup/devices to tell if we should set up rd.znet
This patch fixes bz1941106 and bz1941905 which passed empty rd.znet to the
kernel command line in the following cases,
- The IBM (Z15) KVM guest uses virtio for all devices including network
device, so there is no znet device for IBM KVM guest. So we can't
assume a s390x machine always has a znet device.
- When a bridged network is used, kexec-tools tries to obtain the znet
configuration from the ifcfg script of the bridged network rather than
from the ifcfg script of znet device.
We can iterate /sys/bus/ccwgroup/devices to tell if there if there is
a znet network device. By getting an ifname from znet, we can also avoid
mistaking the slave netdev as a znet network device in a bridged network
or bonded network.
Note: This patch also assumes there is only one znet device as commit
7148c0a30d ("add s390x netdev setup")
which greatly simplifies the code. According to IBM [1], there could be
more than znet devices for a z/VM system and a z/VM system may have a
non-znet network device like ConnectX. Since kdump_setup_znet was
introduced in 2012 and so far there is no known customer complaint that
invalidates this assumption I think it's safe to assume an IBM z/VM
system only has one znet device. Besides, there is no z/VM system found
on beaker to test the alternative scenarios.
[1] https://bugzilla.redhat.com/show_bug.cgi?id=1941905#c13
Signed-off-by: Coiby Xu <coxu@redhat.com>
Acked-by: Kairui Song <kasong@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Resolves: bz1901024
Upstream: Fedora
Conflict: None
commit a2306346bc
Author: Kairui Song <kasong@redhat.com>
Date: Mon Apr 26 17:09:56 2021 +0800
Remove the kdump error handler isolation wrapper
The wrapper is introduced in commit 002337c, according to the commit
message, the only usage of the wrapper is when dracut-initqueue calls
"systemctl start emergency" directly. In that case, emergency
is started, but not in a isolation mode, which means dracut-initqueue
is still running. On the other hand, emergency will call
"systemctl start dracut-initqueue" again when default action is dump_to_rootfs.
systemd would block on the last dracut-initqueue, waiting for the first
instance to exit, which leaves us hang.
In previous commit we added initqueue status detect in dump_to_rootfs,
so now even without the wrapper, it will not hang.
And actually, previously, with the wrapper, emergency might still hang
for like 30s. When dracut called emergency service because initqueue
timed out, dump_to_rootfs will try start initqueue again and timeout
again. Now with the wrapper removed, we can avoid these two kinds of
hangs, bacause without the isolation we can detect initqueue service
status correctly in such case.
Also remove the invalid header comments in service file, the service
is not part of systemd code. And sync the service spec with dracut.
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Kairui Song <kasong@redhat.com>
Resolves: bz1896247
Upstream: fedora
Conflict: none
commit ee160bf04d
Author: Kairui Song <kasong@redhat.com>
Date: Mon Apr 19 23:00:10 2021 +0800
Revert "Always set vm.zone_reclaim_mode = 3 in kdump kernel"
This reverts commit 5633e83318.
vm.zone_reclaim_mode may cause trashing on some machines. And after
second thought, vm.zone_reclaim_mode is barely helpful for machines
with high mem stress, so just revert it.
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Pingfan Liu <piliu@redhat.com>
Signed-off-by: Kairui Song <kasong@redhat.com>
Resolves: bz1947928
Upstream: fedora
Conflict: none
commit 475e33030b
Author: Tao Liu <ltao@redhat.com>
Date: Sun Apr 25 17:05:42 2021 +0800
Make dracut-squash required for kexec-tools
This patch reverts commit "Make dracut-squash a weak dep".
Although kexec-tools can work without dracut-squash, it is essential
for kdump to run properly in cases [1][2] where minimal amount of memory
consumption is expected. Thus dracut-squash is needed for it.
[1] https://lists.fedoraproject.org/archives/list/kexec@lists.fedoraproject.org/message/SJX7CW3WLOYSFI2YJKGTUGDBWSCMZXVZ/
[2] https://www.spinics.net/lists/systemd-devel/msg05864.html
Signed-off-by: Tao Liu <ltao@redhat.com>
Acked-by: Kairui Song <kasong@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
Coiby Xu
Tao Liu
Pingfan Liu
Kairui Song