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* x86: make crashdump worksChen Minqiang2020-03-202-1/+15
| | | | | | | | | | | | | | | 1. KERNEL_CRASH_DUMP should depends on KERNEL_PROC_KCORE (kexec use it) 2. select crashkernel mem size by totalmem mem <= 256M disable crashkernel by default mem >= 4G use 256M for crashkernel mem >= 8G use 512M for crashkernel default use 128M 3. set BOOT_IMAGE in kdump.init 4. resolve a "Unhandled rela relocation: R_X86_64_PLT32" error Tested on x86_64 Signed-off-by: Chen Minqiang <ptpt52@gmail.com>
* kexec-tools: change kdump.init STOP indexJoseph Tingiris2019-06-241-1/+1
| | | | | | | | | This patch is in a series to allow additional STOP indexes after umount, so that other block devices may stop cleanly. kdumpinit is now STOP=90 Signed-off-by: Joseph Tingiris <joseph.tingiris@gmail.com>
* kexec-tools: issue warning when dd'ing vmcorePhilip Prindeville2018-02-111-0/+2
| | | | | | | | With no warning, it just looks like the box has hung during boot. We don't want users resetting it without having captured a crashdump. Signed-off-by: Philip Prindeville <philipp@redfish-solutions.com>
* kexec-tools: bump version and add support for crashdump kernelDaniel Golle2017-06-093-0/+200
split kexec-tools into two packages, kexec and kdump. * kexec to simply execute a new kernel * kdump is for loading and collecting debris of a crashed kernel with support for kdump forensics. In order to properly support booting into a crashkernel, an init script as well as UCI configuration has been added. As modifying the kernel cmdline is required for this to work in x86 platforms use an uci-defaults script to modify /boot/grub/grub.cfg. To test collecting crash information, use the 'c' sysrq-trigger, ie. echo c > /proc/sysrq-trigger This should result in the crash kernel being executed and (depending on the configution) dmesg and/or vmcore getting saved. To check if the crash kernel was loaded properly, use the 'status' command of the kdump init script. Signed-off-by: Daniel Golle <daniel@makrotopia.org>