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Kairui Song e9e6a2c745 kdumpctl: Add kdumpctl estimate 
Add a rough esitimation support, currently, following memory usage are
checked by this sub command:

- System RAM
- Kdump Initramfs size
- Kdump Kernel image size
- Kdump Kernel module size
- Kdump userspace user and other runtime allocated memory (currently
  simply using a fixed value: 64M)
- LUKS encryption memory usage

The output of kdumpctl estimate looks like this:
  # kdumpctl estimate
  Reserved crashkernel:    256M
  Recommanded crashkernel: 160M

  Kernel image size:   47M
  Kernel modules size: 12M
  Initramfs size:      19M
  Runtime reservation: 64M
  Large modules:
      xfs: 1892352
      nouveau: 2318336

And if the kdump target is encrypted:
  # kdumpctl estimate
  Encrypted kdump target requires extra memory, assuming using the keyslot with minimun memory requirement

  Reserved crashkernel:    256M
  Recommanded crashkernel: 655M

  Kernel image size:   47M
  Kernel modules size: 12M
  Initramfs size:      19M
  Runtime reservation: 64M
  LUKS required size:  512M
  Large modules:
      xfs: 1892352
      nouveau: 2318336
  WARNING: Current crashkernel size is lower than recommanded size 655M.

The "Recommanded" value is calculated based on memory usages mentioned
above, and will be adjusted accodingly to be no less than the value provided
by kdump_get_arch_recommend_size.

Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Pingfan Liu <piliu@redhat.com>
 		2021-05-19 15:27:43 +08:00
tests selftest: replace qemu-kvm with one based on dracut's run-qemu 2021-03-24 15:51:02 +08:00
.gitignore .gitignore: Update to make it more generic 2016-05-16 10:15:01 +08:00
60-kdump.install Write to `/var/lib/kdump` if $KDUMP_BOOTDIR not writable 2021-04-19 16:11:17 +08:00
98-kexec.rules Make udev reload rules quiet during bootup 2018-12-06 17:44:03 +08:00
98-kexec.rules.ppc64 Stop reloading kdump service on CPU hotplug event for FADump 2021-03-10 16:24:42 +08:00
README README: Add a README file 2014-04-02 10:45:36 +08:00
dracut-early-kdump-module-setup.sh module-setup.sh: don't polute the namespace unnecessarily 2021-01-20 14:14:08 +08:00
dracut-early-kdump.sh logger: source the logger file individually 2021-01-20 14:13:44 +08:00
dracut-kdump-capture.service dracut-kdump-capture.service: Use OnFailureJobMode instead of deprecated OnFailureIsolate 2019-06-14 09:44:09 +08:00
dracut-kdump-emergency.service kdump-emergency: fix "Transaction is destructive" emergency failure 2017-03-31 11:54:30 +08:00
dracut-kdump-emergency.target kdump-emergency: fix "Transaction is destructive" emergency failure 2017-03-31 11:54:30 +08:00
dracut-kdump-error-handler.service kdump-error-handler.service: Remove ExecStopPost 2019-11-28 17:46:00 +08:00
dracut-kdump-error-handler.sh Add failure_action as alias of default and make default obsolete 2019-01-22 17:57:53 +08:00
dracut-kdump.sh Fix incorrect vmcore permissions when dumped through ssh 2021-03-23 16:10:43 +08:00
dracut-module-setup.sh Warn the user if network scripts are used 2021-05-13 17:13:31 +08:00
dracut-monitor_dd_progress monitor-dd-progress fix 2013-06-25 16:45:59 +08:00
early-kdump-howto.txt Improves the early-kdump-howto.txt document in several points: 2020-03-12 23:31:34 +08:00
fadump-howto.txt fadump: improve fadump-howto.txt about remote dump target setup 2021-02-23 16:18:54 +08:00
kdump-dep-generator.sh logger: source the logger file individually 2021-01-20 14:13:44 +08:00
kdump-in-cluster-environment.txt Add fence_kdump support for generic clusters 2014-04-03 14:43:06 +08:00
kdump-lib-initramfs.sh Fix incorrect file permissions of vmcore-dmesg-incomplete.txt 2021-05-11 02:11:50 +08:00
kdump-lib.sh kdumpctl: Add kdumpctl estimate 2021-05-19 15:27:43 +08:00
kdump-logger.sh Capitalize the configuration name of log level 2020-11-13 02:49:35 +08:00
kdump-udev-throttler Make udev reload rules quiet during bootup 2018-12-06 17:44:03 +08:00
kdump.conf kdump.conf: add ipv6 example for nfs and ssh dump 2021-01-21 15:36:27 +08:00
kdump.conf.5 kdump.conf: Update doc about core_collector for ssh target 2021-01-12 16:12:32 +08:00
kdump.service kdump.service: use ConditionKernelCommandLine=crashkernel 2020-10-27 12:22:36 -04:00
kdump.sysconfig Disable CMA in kdump 2nd kernel 2021-05-13 17:13:39 +08:00
kdump.sysconfig.aarch64 Disable CMA in kdump 2nd kernel 2021-05-13 17:13:39 +08:00
kdump.sysconfig.i386 Disable CMA in kdump 2nd kernel 2021-05-13 17:13:39 +08:00
kdump.sysconfig.ppc64 Disable CMA in kdump 2nd kernel 2021-05-13 17:13:39 +08:00
kdump.sysconfig.ppc64le Disable CMA in kdump 2nd kernel 2021-05-13 17:13:39 +08:00
kdump.sysconfig.s390x Disable CMA in kdump 2nd kernel 2021-05-13 17:13:39 +08:00
kdump.sysconfig.x86_64 Disable CMA in kdump 2nd kernel 2021-05-13 17:13:39 +08:00
kdumpctl kdumpctl: Add kdumpctl estimate 2021-05-19 15:27:43 +08:00
kdumpctl.8 kdumpctl: Add kdumpctl estimate 2021-05-19 15:27:43 +08:00
kexec-kdump-howto.txt Doc: Improve the kdump sysconfig document 2021-01-12 16:46:44 +08:00
kexec-tools.spec Release 2.0.22-2 2021-05-13 17:14:38 +08:00
live-image-kdump-howto.txt Revert "kdumpctl: filter 'root' kernel parameter when running in live images" 2017-04-11 16:03:12 +08:00
mkdumprd mkdumprd: make use of the new get_luks_crypt_dev helper 2021-05-19 15:27:37 +08:00
mkdumprd.8 Doc: improve mkdumprd man page 2020-12-11 14:05:08 +08:00
sources Update makedumpfile to 1.6.9 2021-05-13 16:45:36 +08:00
zanata-notes.txt Add a notes for zanata process 2012-12-05 01:23:09 -05:00

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