Commit Graph

44 Commits

Author SHA1 Message Date
Tao Liu
b494b7f193 bash scripts: reformat with shfmt
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>
2021-11-09 21:42:45 +08:00
Tao Liu
63308480fc bash scripts: declare and assign separately
upstream: fedora
resolves: bz2003832
conflict: none

commit 4f75e16700
Author: Kairui Song <kasong@redhat.com>
Date:   Wed Aug 18 02:04:45 2021 +0800

    bash scripts: declare and assign separately

    Declare and assign separately to avoid masking return values:
    https://github.com/koalaman/shellcheck/wiki/SC2155

    Signed-off-by: Kairui Song <kasong@redhat.com>
    Acked-by: Philipp Rudo <prudo@redhat.com>

Signed-off-by: Tao Liu <ltao@redhat.com>
2021-11-09 21:37:15 +08:00
Tao Liu
f6d6b60a6a bash scripts: fix redundant exit code check
upstream: fedora
resolves: bz2003832
conflict: none

commit a4648fc851
Author: Kairui Song <kasong@redhat.com>
Date:   Wed Sep 8 17:23:16 2021 +0800

    bash scripts: fix redundant exit code check

    As suggested by:
    https://github.com/koalaman/shellcheck/wiki/SC2181

    Signed-off-by: Kairui Song <kasong@redhat.com>
    Acked-by: Philipp Rudo <prudo@redhat.com>

Signed-off-by: Tao Liu <ltao@redhat.com>
2021-11-09 21:35:45 +08:00
Tao Liu
bf4667b866 bash scripts: fix variable quoting issue
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/SC2046
    https://github.com/koalaman/shellcheck/wiki/SC2053
    https://github.com/koalaman/shellcheck/wiki/SC2068
    https://github.com/koalaman/shellcheck/wiki/SC2086
    https://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>
2021-11-09 21:27:55 +08:00
Tao Liu
c373a2c582 Don't use die in dracut-module-setup.sh
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>
2021-11-09 21:22:55 +08:00
Tao Liu
dcb59c30d5 bash scripts: replace '[ ]' with '[[ ]]' for bash scripts
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>
2021-11-09 21:13:59 +08:00
Tao Liu
98e1935293 Don't iterate the whole /sys/devices just to find drm device
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>
2021-11-09 20:48:26 +08:00
Tao Liu
16c2821171 bash scripts: use $(...) notation instead of legacy ...
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>
2021-11-09 20:39:50 +08:00
Tao Liu
67611bba2a bash scripts: always use "read -r"
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>
2021-11-09 20:39:17 +08:00
Tao Liu
d07b20d718 bash scripts: get rid of unnecessary sed calls
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>
2021-11-09 20:39:09 +08:00
Tao Liu
480de7c63d bash scripts: get rid of expr and let
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>
2021-11-09 20:39:02 +08:00
Tao Liu
e07098aa14 bash scripts: remove useless cat
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>
2021-11-09 20:38:55 +08:00
Tao Liu
6d930905d5 dracut-module-setup.sh: remove surrounding $() for subshell
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>
2021-11-03 16:15:26 +08:00
Tao Liu
9abf44a082 dracut-module-setup.sh: make iscsi check fail early if cd failed
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>
2021-11-03 16:15:06 +08:00
Tao Liu
72c3befcb8 dracut-module-setup.sh: fix a loop over ls issue
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>
2021-11-03 16:14:44 +08:00
Tao Liu
057e505536 dracut-module-setup.sh: fix a ambiguous variable reference
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>
2021-11-03 16:14:24 +08:00
Tao Liu
c8faddc4f8 dracut-module-setup.sh: use "*" to expend array as string
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>
2021-11-03 16:14:08 +08:00
Tao Liu
c0cbd45726 dracut-module-setup.sh: fix _bondoptions wrong references
upstream: fedora
resolves: bz2003832
conflict: none

commit 49dd4fcdbb
Author: Kairui Song <kasong@redhat.com>
Date:   Wed Aug 4 15:41:10 2021 +0800

    dracut-module-setup.sh: fix _bondoptions wrong references

    Signed-off-by: Kairui Song <kasong@redhat.com>
    Acked-by: Philipp Rudo <prudo@redhat.com>

Signed-off-by: Tao Liu <ltao@redhat.com>
2021-11-03 16:13:55 +08:00
Tao Liu
3fb4383a9c dracut-module-setup.sh: remove an unused variable
upstream: fedora
resolves: bz2003832
conflict: none

commit ba7aa447b2
Author: Kairui Song <kasong@redhat.com>
Date:   Wed Aug 4 14:29:10 2021 +0800

    dracut-module-setup.sh: remove an unused variable

    Signed-off-by: Kairui Song <kasong@redhat.com>
    Acked-by: Philipp Rudo <prudo@redhat.com>

Signed-off-by: Tao Liu <ltao@redhat.com>
2021-11-03 16:13:40 +08:00
Tao Liu
37b61ee43a dracut-module-setup.sh: rework kdump_get_ip_route_field
upstream: fedora
resolves: bz2003832
conflict: none

commit 46542ccda5
Author: Kairui Song <kasong@redhat.com>
Date:   Wed Aug 4 02:59:43 2021 +0800

    dracut-module-setup.sh: rework kdump_get_ip_route_field

    Avoid duplicated echo / cut / grep call, just use sed.

    Signed-off-by: Kairui Song <kasong@redhat.com>
    Acked-by: Philipp Rudo <prudo@redhat.com>

Signed-off-by: Tao Liu <ltao@redhat.com>
2021-11-03 16:13:28 +08:00
Tao Liu
14205c1d6f kdump-lib.sh: add a config value retrive helper
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>
2021-11-03 16:08:50 +08:00
Tao Liu
67b8dd1cb8 kdump-lib.sh: add a config format and read helper
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>
2021-11-03 16:08:22 +08:00
Coiby Xu
d4de3e9dcc Check the existence of /sys/bus/ccwgroup/devices/*/online beforehand
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>
2021-07-21 17:24:50 +08:00
Kairui Song
96a3fc1ac8 fadump: isolate fadump initramfs image within the default one
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>
2021-07-20 15:43:11 +08:00
Coiby Xu
e45a51c995 fix format issue in find_online_znet_device
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>
2021-06-30 10:26:28 +08:00
Coiby Xu
3b4df2455b check the existence of /sys/bus/ccwgroup/devices before trying to find online network device
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>
2021-06-30 10:10:37 +08:00
Coiby Xu
f0ecf8fef1 Iterate /sys/bus/ccwgroup/devices to tell if we should set up rd.znet
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>
2021-06-08 13:27:04 +08:00
Kairui Song
06aa5b897f Remove the kdump error handler isolation wrapper
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>
2021-06-04 14:29:28 +08:00
Kairui Song
de11ebc0b7 Revert "Always set vm.zone_reclaim_mode = 3 in kdump kernel"
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>
2021-05-18 17:19:10 +08:00
Tao Liu
325662490f Make dracut-squash required for kexec-tools
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>
2021-05-14 14:27:03 +08:00
Coiby Xu
b5c91536c1 Warn the user if network scripts are used
Resolves: bz1919052
Upstream: Fedora
Conflict: None

commit 8178d7a5a1
Author: Coiby Xu <coxu@redhat.com>
Date:   Thu Apr 1 15:32:14 2021 +0800

    Warn the user if network scripts are used

    Signed-off-by: Coiby Xu <coxu@redhat.com>
    Acked-by: Kairui Song <kasong@redhat.com>

Signed-off-by: Coiby Xu <coxu@redhat.com>
2021-05-14 06:14:14 +00:00
Coiby Xu
c23189119b Set up bond cmdline by "nmcli --get-values"
Resolves: bz1919052
Upstream: Fedora
Conflict: None

commit d5f6d38173
Author: Coiby Xu <coxu@redhat.com>
Date:   Thu Apr 1 15:32:13 2021 +0800

    Set up bond cmdline by "nmcli --get-values"

    Now kdumpctl will exit if failing to set up bond cmdline.

    Signed-off-by: Coiby Xu <coxu@redhat.com>
    Acked-by: Kairui Song <kasong@redhat.com>

Signed-off-by: Coiby Xu <coxu@redhat.com>
2021-05-14 06:14:14 +00:00
Coiby Xu
f0694987e8 Set up dns cmdline by parsing "nmcli --get-values"
Resolves: bz1919052
Upstream: Fedora
Conflict: None

commit 6f1badec78
Author: Coiby Xu <coxu@redhat.com>
Date:   Thu Apr 1 15:32:12 2021 +0800

    Set up dns cmdline by parsing "nmcli --get-values"

    Signed-off-by: Coiby Xu <coxu@redhat.com>
    Acked-by: Kairui Song <kasong@redhat.com>

Signed-off-by: Coiby Xu <coxu@redhat.com>
2021-05-14 06:14:14 +00:00
Coiby Xu
d408ec02f0 Set up s390 znet cmdline by "nmcli --get-values"
Resolves: bz1919052
Upstream: Fedora
Conflict: None

commit 8b08b4f17b
Author: Coiby Xu <coxu@redhat.com>
Date:   Thu Apr 1 15:32:11 2021 +0800

    Set up s390 znet cmdline by "nmcli --get-values"

    Now kdumpctl will abort when failing to set up znet.

    Signed-off-by: Coiby Xu <coxu@redhat.com>
    Acked-by: Kairui Song <kasong@redhat.com>

Signed-off-by: Coiby Xu <coxu@redhat.com>
2021-05-14 06:14:14 +00:00
Coiby Xu
69c605f392 rd.route should use the name from kdump_setup_ifname
Resolves: bz1950932
Upstream: Fedora
Conflict: None

commit 8a33ffffbc
Author: Coiby Xu <coxu@redhat.com>
Date:   Thu May 6 09:20:27 2021 +0800

    rd.route should use the name from kdump_setup_ifname

    This fixes bz1854037 which happens because kexec-tools generates rd.route for
    eth0 instead of for kdump-eth0,
     1. "rd.route=168.63.129.16:10.0.0.1:eth0 rd.route=169.254.169.254:10.0.0.1:eth0" is passed to the dracut cmdline by kexec-tools
     2. In the 2rd kernel, dracut/modules.d/35network-manager/nm-config.sh calls
        /usr/libexec/nm-initrd-generator to generate two .nmconnection files
        based on the dracut cmdline, i.e. kdump-eth0.nmconnection and eth0.nmconnection,
        - /run/NetworkManager/system-connections/kdump-eth0.nmconnection
            [connection]
            id=kdump-eth0
            uuid=3ef53b1b-3908-437e-a15f-cf1f3ea2678b
            type=ethernet
            autoconnect-retries=1
            interface-name=kdump-eth0
            multi-connect=1
            permissions=
            wait-device-timeout=60000
            [ethernet]
            mac-address-blacklist=
            [ipv4]
            address1=10.0.0.4/24,10.0.0.1
            dhcp-timeout=90
            dns=168.63.129.16;
            dns-search=
            may-fail=false
            method=manual
            [ipv6]
            addr-gen-mode=eui64
            dhcp-timeout=90
            dns-search=
            method=disabled
            [proxy]

        - /run/NetworkManager/system-connections/eth0.nmconnection
            [connection]
            id=eth0
            uuid=f224dc22-2891-4d7b-8f66-745029df4b53
            type=ethernet
            autoconnect-retries=1
            interface-name=eth0
            multi-connect=1
            permissions=
            [ethernet]
            mac-address-blacklist=
            [ipv4]
            dhcp-timeout=90
            dns=168.63.129.16;
            dns-search=
            method=auto
            route1=168.63.129.16/32,10.0.0.1
            route2=169.254.169.254/32,10.0.0.1
            [ipv6]
            addr-gen-mode=eui64
            dhcp-timeout=90
            dns-search=
            method=auto
            [proxy]

     3. Since there's eth0.nmconnection, NetworkManager will try to get an IP for eth0 regardless of the fact it's a slave NIC and time out
        ```
        $ ip link show
        2: kdump-eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000
           link/ether 00:0d:3a:11:86:8b brd ff:ff:ff:ff:ff:ff
        3: eth0: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc mq master kdump-eth0 state UP mode DEFAULT group default qlen 1000
        ```

    Reported-by: Huijing Hei <hhei@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>
2021-05-13 15:37:30 +08:00
Coiby Xu
6a8e087180 get kdump ifname once in kdump_install_net
Resolves: bz1950932
Upstream: Fedora
Conflict: None

commit 97ee5dc64c
Author: Coiby Xu <coxu@redhat.com>
Date:   Thu May 6 09:20:26 2021 +0800

    get kdump ifname once in kdump_install_net

    Signed-off-by: Coiby Xu <coxu@redhat.com>
    Acked-by: Kairui Song <kasong@redhat.com>

Signed-off-by: Coiby Xu <coxu@redhat.com>
2021-05-13 15:36:46 +08:00
Coiby Xu
54611cd628 Implement IP netmask calculation to replace "ipcalc -m"
Resolves: bz1947347
Upstream: Fedora
Conflict: None

commit 1ca1b71780
Author: Coiby Xu <coxu@redhat.com>
Date:   Thu Apr 8 11:44:26 2021 +0800

    Implement IP netmask calculation to replace "ipcalc -m"

    Recently, dracut-network drops depedency on dhcp-client which requires
    ipcalc. Thus the dependency chain
    "kexec-tools -> dracut-network -> dhcp-client -> ipcalc"
    is broken. When NIC is configured to a static IP, kexec-tools depended
    on "ipcalc -m" to get netmask. This commit implements the shell
    equivalent of "ipcalc -m".

    The following test code shows cal_netmask_by_prefix is consistent with
    "ipcalc -m",

        #!/bin/bash
        . dracut-module-setup.sh

        for i in {0..128}; do
            mask_expected=$(ipcalc -m fe::/$i| cut -d"=" -f2)
            mask_actual=$(cal_netmask_by_prefix $i "-6")
            if [[ "$mask_expected" != "$mask_actual" ]]; then
                echo "prefix="$i, "expected="$mask_expected, "acutal="$mask_actual
                exit
            fi
        done

        echo "IPv6 tests passed"

        for i in {0..32}; do
            mask_expected=$(ipcalc -m 8.8.8.8/$i| cut -d"=" -f2)
            mask_actual=$(cal_netmask_by_prefix $i "")
            if [[ "$mask_expected" != "$mask_actual" ]]; then
                echo "prefix="$i, "expected="$mask_expected, "acutal="$mask_actual
                exit
            fi
        done

        echo "IPv4 tests passed"

        i=-2
        res=$(cal_netmask_by_prefix "$i" "")
        if [[ $? -ne 1 ]]; then
            echo "cal_netmask_by_prefix should exit when prefix<0"
            exit
        fi

        res=$(cal_netmask_by_prefix "$i" "")
        if [[ $? -ne 1 ]]; then
            echo "cal_netmask_by_prefix should exit when prefix<0"
            exit
        fi

        i=33
        $(cal_netmask_by_prefix $i "")
        if [[ $? -ne 1 ]]; then
            echo "cal_netmask_by_prefix should exit when prefix>32 for IPv4"
            exit
        fi

        i=129
        $(cal_netmask_by_prefix $i "-6")
        if [[ $? -ne 1 ]]; then
            echo "cal_netmask_by_prefix should exit when prefix>128 for IPv4"
            exit
        fi

        echo "Bad prefixes tests passed"

        echo "All tests passed"

    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>
2021-05-11 06:38:58 +00:00
Tao Liu
3371584d02 Fix incorrect permissions on kdump dmesg file
Resolves: rhbz#1938165
Upstream: fedora
Conflict: none

commit 91c802ff52
Author: Tao Liu <ltao@redhat.com>
Date:   Thu Mar 18 16:52:46 2021 +0800

    Fix incorrect permissions on kdump dmesg file

    Also known as CVE-2021-20269. The kdump dmesg log files(kexec-dmesg.log,
    vmcore-dmesg.txt) are generated by shell redirection, which take the
    default umask value, making the files readable for group and others.

    This patch chmod these files, making them only accessible to owner.

    Signed-off-by: Tao Liu <ltao@redhat.com>
    Acked-by: Kairui Song <kasong@redhat.com>

Signed-off-by: Tao Liu <ltao@redhat.com>
2021-04-20 16:29:24 +08:00
DistroBaker
624a6443ca Merged update from upstream sources
This is an automated DistroBaker update from upstream sources.
If you do not know what this is about or would like to opt out,
contact the OSCI team.

Source: https://src.fedoraproject.org/rpms/kexec-tools.git#33108ef524ff033295711f888ce2c67d457951aa
2021-01-22 08:12:00 +00:00
DistroBaker
7d0122bd5d Merged update from upstream sources
This is an automated DistroBaker update from upstream sources.
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contact the OSCI team.

Source: https://src.fedoraproject.org/rpms/kexec-tools.git#7cb4be80cdaaf85b7dcbdf8f15b113192159026b
2020-12-23 10:00:07 +00:00
DistroBaker
a1014067b4 Merged update from upstream sources
This is an automated DistroBaker update from upstream sources.
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contact the OSCI team.

Source: https://src.fedoraproject.org/rpms/kexec-tools.git#d5e39c9f7b721b80d2aa1afa85c38754a5be074e
2020-11-30 11:50:38 +00:00
DistroBaker
17a51515f0 Merged update from upstream sources
This is an automated DistroBaker update from upstream sources.
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contact the OSCI team.

Source: https://src.fedoraproject.org/rpms/kexec-tools.git#4f492cf73ea11ff74f5b062e18fcea45cb5e7eeb
2020-11-20 12:35:49 +00:00
DistroBaker
5cac7c3f96 Merged update from upstream sources
This is an automated DistroBaker update from upstream sources.
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contact the OSCI team.

Source: https://src.fedoraproject.org/rpms/kexec-tools.git#bfd06661e81465d077bac435c90b4082134adf19
2020-11-05 05:34:29 +00:00
Petr Šabata
f5bf4978d8 RHEL 9.0.0 Alpha bootstrap
The content of this branch was automatically imported from Fedora ELN
with the following as its source:
https://src.fedoraproject.org/rpms/kexec-tools#041ba89902961b5490a7143d9596dc00d732cba0
2020-10-15 14:45:57 +02:00