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Xunlei Pang 071ea2a277 kdumpctl: bail out earlier in case of no reserved memory 
Some cloud people complained that VM boot speed is slower than
Ubuntu and other distributions, after some debugging, we found
that one of the causes is kdump service starts too slow(7seconds
according to the test result on the test VM), actually there is
no "crashkernel=X" specified. Although kdump service is parallel,
it affects the speed more or less especially on VMs with few cpus,
which is unacceptable. It is even worse when kdump initramfs is
built out in case of no reserved memory at first boot.

Commit afa4a35d3 ("kdumpctrl: kdump feasibility should fail if no
crash memory") can actually solve this issue.

This patch is a supplement of above-mentioned commit, we bail out
start() even earlier in case of no reserved memory.

Also made some cosmatic changes for check_crash_mem_reserved().

1) Before this patch
$ time kdumpctl start
No memory reserved for crash kernel.
Starting kdump: [FAILED]

real    0m0.282s
user    0m0.184s
sys     0m0.146s

2) After this patch
$ time kdumpctl start
No memory reserved for crash kernel
Starting kdump: [FAILED]

real    0m0.010s
user    0m0.008s
sys     0m0.001s

Signed-off-by: Xunlei Pang <xlpang@redhat.com>
Acked-by: Pratyush Anand <panand@redhat.com>
Acked-by: Dave Young <dyoung@redhat.com>
2017-05-02 17:23:57 +08:00
anaconda-addon Rename the subpackage kdump-anaconda-addon 2014-05-22 18:32:43 +08:00
.gitignore .gitignore: Update to make it more generic 2016-05-16 10:15:01 +08:00
98-kexec.rules udev-rules: Restart kdump service on cpu ADD/REMOVE events 2014-09-15 21:55:07 +08:00
dracut-kdump-capture.service Introduce kdump capture service 2014-08-05 13:13:32 +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 Introduce kdump error handling service 2014-08-05 13:13:32 +08:00
dracut-kdump-error-handler.sh Revert "execute kdump_post after do_default_action" 2015-04-08 15:50:16 +08:00
dracut-kdump.sh dracut-kdump: use POSIX shell syntax 2016-11-28 10:41:15 +08:00
dracut-module-setup.sh kdumpctl: remove "root=X" for kdump boot 2017-04-11 16:02:12 +08:00
dracut-monitor_dd_progress monitor-dd-progress fix 2013-06-25 16:45:59 +08:00
fadump-howto.txt Document: fix incorrect link in fadump-how.txt 2017-03-08 13:07:20 +08:00
kdump-dep-generator.sh kdump-dep-generator: Add kdump service dependencies on the fly 2014-04-17 11:27:31 +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 kdump-lib-initramfs.sh: ignore the failure of echo 2017-04-27 13:59:49 +08:00
kdump-lib.sh kdump-lib.sh: fix incorrect usage with pipe as input for grep -q in is_pcs_fence_kdump() 2017-03-08 13:07:20 +08:00
kdump.conf kdump: Introduce 'force_no_rebuild' option 2017-04-27 13:59:49 +08:00
kdump.conf.5 kdump: Introduce 'force_no_rebuild' option 2017-04-27 13:59:49 +08:00
kdump.service make kdump work when kernel crash after shutdown 2015-06-03 21:10:34 +08:00
kdump.sysconfig Remove kernel param "quiet" from kdump kernel cmdline 2015-12-11 15:18:31 +08:00
kdump.sysconfig.i386 Remove kernel param "quiet" from kdump kernel cmdline 2015-12-11 15:18:31 +08:00
kdump.sysconfig.ppc64 Remove kernel param "quiet" from kdump kernel cmdline 2015-12-11 15:18:31 +08:00
kdump.sysconfig.ppc64le Remove kernel param "quiet" from kdump kernel cmdline 2015-12-11 15:18:31 +08:00
kdump.sysconfig.s390x Remove kernel param "quiet" from kdump kernel cmdline 2015-12-11 15:18:31 +08:00
kdump.sysconfig.x86_64 kdump.sysconfig/x86_64: Add nokaslr to kdump kernel cmdline 2017-04-27 13:59:49 +08:00
kdumpctl kdumpctl: bail out earlier in case of no reserved memory 2017-05-02 17:23:57 +08:00
kdumpctl.8 kdumpctl: Add man page for kdumpctl 2015-08-19 14:15:34 +08:00
kexec-kdump-howto.txt kexec-kdump-howto: Add doc about the special mount information via "dracut_args" 2016-08-26 14:03:48 +08:00
kexec-tools-2.0.3-disable-kexec-test.patch Disable kexec_test 2012-01-21 16:56:07 +08:00
kexec-tools-2.0.14-build_mem_phdrs-check-if-p_paddr-is-invalid.patch Fix makedumpfile --mem-usage /proc/kcore 2017-03-17 10:14:17 +08:00
kexec-tools-2.0.14-makedumpfile-elf_info-kcore-check-for-invalid-physic.patch Fix makedumpfile --mem-usage /proc/kcore 2017-03-17 10:14:17 +08:00
kexec-tools-2.0.14-makedumpfile-initial-call-cache_init-a-bit-early.patch Fix makedumpfile --mem-usage /proc/kcore 2017-03-17 10:14:17 +08:00
kexec-tools-2.0.14-makedumpfile-makedumpfile-Correct-the-calculation-of.patch Fix makedumpfile --mem-usage /proc/kcore 2017-03-17 10:14:17 +08:00
kexec-tools-2.0.14-makedumpfile-makedumpfile-Discard-process_dump_load.patch Fix makedumpfile --mem-usage /proc/kcore 2017-03-17 10:14:17 +08:00
kexec-tools-2.0.14-makedumpfile-mem-usage-allow-to-work-only-with-f-for.patch Fix makedumpfile --mem-usage /proc/kcore 2017-03-17 10:14:17 +08:00
kexec-tools-2.0.14-makedumpfile-show_mem_usage-calculate-page-offset-af.patch Fix makedumpfile --mem-usage /proc/kcore 2017-03-17 10:14:17 +08:00
kexec-tools-2.0.14-makedumpfile-x86_64-check-physical-address-in-PT_LOA.patch Fix makedumpfile --mem-usage /proc/kcore 2017-03-17 10:14:17 +08:00
kexec-tools-2.0.14-x86-x86_64-Fix-format-warning-with-die.patch Fix makedumpfile --mem-usage /proc/kcore 2017-03-17 10:14:17 +08:00
kexec-tools.spec Release 2.0.14-9 2017-04-27 14:01:45 +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 kdumpctl: remove "root=X" for kdump boot 2017-04-11 16:02:12 +08:00
mkdumprd.8 Remove comma which is redundant 2013-02-16 15:19:41 +08:00
README README: Add a README file 2014-04-02 10:45:36 +08:00
sources Rebase makedumpfile 1.6.1 2017-01-04 14:58:56 +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
=============================
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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,
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