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Kairui Song 1c97aee728 Throttle kdump reload request triggered by udev event 
Previously, kdump will restart / reload for many times on hotplug
event, especially memory hotplug events. Hotplugged memory may
generate many udev event as memory are managed and hotplugged in
small chunks by the kernel.

This results in unnecessary system workload and an actually longer
delay of kdump reload and the hotplug event, as udev will either
get blocked or kdumpctl will be waiting for other triggered operation.

To fix this, introduce a kdump-udev-throttler as an agent which will
be called by udev and merge concurrent kdump restart requests. Tested
with a Hyper-V VM which is failing due to udev timeout previously,
no new issues found.

Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Dave Young <dyoung@redhat.com>
2018-11-01 22:33:17 +08:00
.gitignore .gitignore: Update to make it more generic 2016-05-16 10:15:01 +08:00
98-kexec.rules Throttle kdump reload request triggered by udev event 2018-11-01 22:33:17 +08:00
dracut-early-kdump-module-setup.sh Add early kdump support in initramfs. 2018-05-29 10:19:19 +08:00
dracut-early-kdump.sh Add early kdump support in initramfs. 2018-05-29 10:19:19 +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 Enable dracut squash module 2018-10-15 15:01:31 +08:00
dracut-monitor_dd_progress monitor-dd-progress fix 2013-06-25 16:45:59 +08:00
early-kdump-howto.txt Add early kdump support in initramfs. 2018-05-29 10:19:19 +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: Add check to remount to rw mode only if dump target is ro. 2018-10-15 10:46:44 +08:00
kdump-lib.sh move some common functions from kdumpctl to kdump-lib.sh 2018-05-29 10:18:40 +08:00
kdump-udev-throttler Throttle kdump reload request triggered by udev event 2018-11-01 22:33:17 +08:00
kdump.conf kdumpctl: for fence_kdump, the ipaddr of this node should be excluded from list 2017-05-18 16:44:42 +08:00
kdump.conf.5 kdump.conf.5: clarify the fence_kdump_nodes option 2017-06-09 09:47:22 +08:00
kdump.service kdumpctl: Add reload support 2018-11-01 22:31:20 +08:00
kdump.sysconfig Remove kernel param "quiet" from kdump kernel cmdline 2015-12-11 15:18:31 +08:00
kdump.sysconfig.i386 Always drop nofail or nobootwait options 2018-08-14 10:34:45 +08:00
kdump.sysconfig.ppc64 Always drop nofail or nobootwait options 2018-08-14 10:34:45 +08:00
kdump.sysconfig.ppc64le Always drop nofail or nobootwait options 2018-08-14 10:34:45 +08:00
kdump.sysconfig.s390x Always drop nofail or nobootwait options 2018-08-14 10:34:45 +08:00
kdump.sysconfig.x86_64 Always drop nofail or nobootwait options 2018-08-14 10:34:45 +08:00
kdumpctl kdumpctl: Add reload support 2018-11-01 22:31:20 +08:00
kdumpctl.8 kdumpctl: add showmem cmd 2018-05-21 14:06:30 +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-2.0.16-koji-build-fail-workaround.patch Workaround a koji build failure 2017-12-08 11:42:30 +08:00
kexec-tools-2.0.17-kexec-fix-for-Unhandled-rela-relocation-R_X86_64_PLT.patch kexec: fix for "Unhandled rela relocation: R_X86_64_PLT32" error 2018-08-22 15:48:43 +08:00
kexec-tools.spec Throttle kdump reload request triggered by udev event 2018-11-01 22:33:17 +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 Always drop nofail or nobootwait options 2018-08-14 10:34:45 +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 Remove kdump-anaconda subpackage 2018-08-07 17:22:01 +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