rpms/kexec-tools
7
0
Fork 0
Code Issues Pull Requests Releases Activity
Unnamed repository
182 Commits 9 Branches 65 Tags 6.5 MiB
Shell 91.1%
Roff 8.9%
96dc819c25
Go to file
Tao Liu 96dc819c25 Set zstd as the default compression method for kdump initrd 
resolves: bz1896698
upstream: fedora
conflict: none

commit 0311f6e25b
Author: Tao Liu <ltao@redhat.com>
Date:   Wed Jan 5 17:42:12 2022 +0800

    Set zstd as the default compression method for kdump initrd

    zstd has better compression ratio and time consumption balance.
    When no customized compression method specified in kdump.conf,
    we will use zstd as the default compression method.

    **The test method:

    I installed kexec-tools with and without the patch, executing the following
    command for 4 times, and calculate the averange time:

    $ rm -f /boot/initramfs-*kdump.img && time kdumpctl rebuild && \
      ls -ail /boot/initramfs-*kdump.img

    **The test result:

    Bare metal x86_64 machine:
            dracut with squash module
             zlib     lzo      xz       lz4        zstd
    real     10.6282  11.0398  11.395   8.6424    10.1676
    user      9.8932  11.9072  14.2304  2.8286     8.6468
    sys       3.523    3.4626   3.6028  3.5        3.4942
    size of
    kdump.img 30575616 31419392 27102208 36666368 29236224

            dracut without squash module
            zlib      lzo      xz       lz4        zstd
    real     9.509    19.4876  11.6724  9.0338    10.267
    user    10.6028   14.516   17.8662  4.0476     9.0936
    sys      2.942     2.9184   3.0662  2.9232     3.0662
    size of
    kdump.img 19247949 19958120 14505056 21112544 17007764

    PowerVM hosted ppc64le VM:
            dracut with squash module | dracut without sqaush module
             zlib        zstd         |  zlib          zstd
    real     10.6742     10.7572      |   9.7676       10.5722
    user     18.754      19.8338      |  20.7932       13.179
    sys       1.8358      1.864       |   1.637         1.663
                                      |
    size of                           |
    kdump.img 36917248   35467264     |  21441323      19007108

    **discussion

    zstd has a better compression ratio and time consumption balance.

    Acked-by: Coiby Xu <coxu@redhat.com>
    Signed-off-by: Tao Liu <ltao@redhat.com>

Signed-off-by: Tao Liu <ltao@redhat.com>
2022-01-06 14:36:29 +08:00
tests Merged update from upstream sources 2020-11-20 12:35:49 +00:00
.editorconfig kdump-lib-initramfs.sh: prepare to be a POSIX compatible lib 2021-11-09 21:45:15 +08:00
.gitignore RHEL 9.0.0 Alpha bootstrap 2020-10-15 14:45:57 +02:00
60-kdump.install Write to /var/lib/kdump if $KDUMP_BOOTDIR not writable 2021-06-23 09:34:40 +08:00
92-crashkernel.install reset kernel crashkernel for the special case where the kernel is updated right after kexec-tools 2022-01-06 03:55:25 +00:00
98-kexec.rules RHEL 9.0.0 Alpha bootstrap 2020-10-15 14:45:57 +02:00
98-kexec.rules.ppc64 Stop reloading kdump service on CPU hotplug event for FADump 2021-05-14 14:27:03 +08:00
crashkernel-howto.txt update crashkernel-howto 2022-01-06 03:55:25 +00:00
dracut-early-kdump-module-setup.sh dracut-early-kdump-module-setup.sh: install xargs and kdump-lib-initramfs.sh 2022-01-06 14:31:33 +08:00
dracut-early-kdump.sh dracut-early-kdump.sh: make it POSIX compatible 2021-11-10 10:27:00 +08:00
dracut-fadump-init-fadump.sh fadump-init: clean up mount points properly 2021-07-20 15:43:43 +08:00
dracut-fadump-module-setup.sh fadump: isolate fadump initramfs image within the default one 2021-07-20 15:43:11 +08:00
dracut-kdump-capture.service RHEL 9.0.0 Alpha bootstrap 2020-10-15 14:45:57 +02:00
dracut-kdump-emergency.service Merge kdump-error-handler.sh into kdump.sh 2021-11-09 21:45:31 +08:00
dracut-kdump-emergency.target RHEL 9.0.0 Alpha bootstrap 2020-10-15 14:45:57 +02:00
dracut-kdump.sh Add header comment for POSIX compliant scripts 2021-11-10 10:26:54 +08:00
dracut-module-setup.sh ppc64/ppc64le: drop cpu online rule in 40-redhat.rules in kdump initramfs 2021-12-29 11:21:42 +08:00
dracut-monitor_dd_progress RHEL 9.0.0 Alpha bootstrap 2020-10-15 14:45:57 +02:00
early-kdump-howto.txt RHEL 9.0.0 Alpha bootstrap 2020-10-15 14:45:57 +02:00
fadump-howto.txt fadump: improve fadump-howto.txt about remote dump target setup 2021-12-08 08:59:31 +08:00
gating.yaml Add gating.yaml to RHEL-9 kexec-tools 2021-06-08 20:03:41 +08:00
kdump-dep-generator.sh Merged update from upstream sources 2021-01-22 08:12:00 +00:00
kdump-in-cluster-environment.txt RHEL 9.0.0 Alpha bootstrap 2020-10-15 14:45:57 +02:00
kdump-lib-initramfs.sh Add header comment for POSIX compliant scripts 2021-11-10 10:26:54 +08:00
kdump-lib.sh Set zstd as the default compression method for kdump initrd 2022-01-06 14:36:29 +08:00
kdump-logger.sh Add header comment for POSIX compliant scripts 2021-11-10 10:26:54 +08:00
kdump-migrate-action.sh kdump/ppc64: rebuild initramfs image after migration 2021-12-03 18:13:09 +08:00
kdump-restart.sh kdump/ppc64: rebuild initramfs image after migration 2021-12-03 18:13:09 +08:00
kdump-udev-throttler RHEL 9.0.0 Alpha bootstrap 2020-10-15 14:45:57 +02:00
kdump.conf introduce the auto_reset_crashkernel option to kdump.conf 2022-01-06 03:55:25 +00:00
kdump.conf.5 introduce the auto_reset_crashkernel option to kdump.conf 2022-01-06 03:55:25 +00:00
kdump.service Merged update from upstream sources 2020-11-05 05:34:29 +00:00
kdump.sysconfig Disable CMA in kdump 2nd kernel 2021-05-14 14:27:03 +08:00
kdump.sysconfig.aarch64 kdump.sysconfig: make kexec_file_load as default option on arm64 2021-11-12 05:58:48 +00:00
kdump.sysconfig.i386 Disable CMA in kdump 2nd kernel 2021-05-14 14:27:03 +08:00
kdump.sysconfig.ppc64 Disable CMA in kdump 2nd kernel 2021-05-14 14:27:03 +08:00
kdump.sysconfig.ppc64le kdump.sysconfig: make kexec_file_load as default option on ppc64le 2021-11-12 09:47:42 +08:00
kdump.sysconfig.s390x kdump.sysconfig.s390: Remove "prot_virt" from kdump kernel cmdline 2021-07-20 17:27:12 +02:00
kdump.sysconfig.x86_64 Revert "Revert "x86_64: enable the kexec file load by default"" 2021-07-14 09:21:57 +08:00
kdumpctl set up kernel crashkernel for osbuild in kernel hook 2022-01-06 03:55:25 +00:00
kdumpctl.8 rewrite reset_crashkernel to support fadump and to used by RPM scriptlet 2022-01-06 03:55:25 +00:00
kexec-kdump-howto.txt Document/kexec-kdump-howto.txt: improve notes for kdump_pre and kdump_post scripts 2021-12-07 20:02:41 +08:00
kexec-tools-2.0.22-makedumpfile-check-for-invalid-physical-address-proc-kcore-when-making-ELF-dumpfile.patch check for invalid physical address of /proc/kcore when making ELF dumpfile 2021-06-29 13:14:08 +08:00
kexec-tools-2.0.22-makedumpfile-Increase-SECTION_MAP_LAST_BIT-to-5.patch Increase SECTION_MAP_LAST_BIT to 5 2021-06-28 22:05:35 +08:00
kexec-tools.spec Set zstd as the default compression method for kdump initrd 2022-01-06 14:36:29 +08:00
live-image-kdump-howto.txt RHEL 9.0.0 Alpha bootstrap 2020-10-15 14:45:57 +02:00
mkdumprd Set zstd as the default compression method for kdump initrd 2022-01-06 14:36:29 +08:00
mkdumprd.8 Merged update from upstream sources 2020-12-23 10:00:07 +00:00
mkfadumprd Set zstd as the default compression method for kdump initrd 2022-01-06 14:36:29 +08:00
README RHEL 9.0.0 Alpha bootstrap 2020-10-15 14:45:57 +02:00
sources Release 2.0.23-3 2021-12-08 09:13:27 +08:00
supported-kdump-targets.txt Update supported-kdump-targets.txt 2021-11-26 13:38:12 +08:00
zanata-notes.txt RHEL 9.0.0 Alpha bootstrap 2020-10-15 14:45:57 +02:00

README 

Adding a patch to kexec-tools
=============================
There is a mailing list kexec@lists.fedoraproject.org where all the dicussion
related to fedora kexec-tools happen. All the patches are posted there for
inclusion and committed to kexec-tools after review.

So if you want your patches to be included in fedora kexec-tools package,
post these to kexec@lists.fedoraproject.org.

One can subscribe to list and browse through archives here.

https://admin.fedoraproject.org/mailman/listinfo/kexec