d5fe96cd7a
kexec-tools needs to disable CMA for kdump kernel cmdline, otherwise kdump kernel may run out of memory. This patch strips the inherited cma=, hugetlb_cma= cmd line from 1st kernel, and sets to be 0 for 2nd kernel. Signed-off-by: Tao Liu <ltao@redhat.com> Acked-by: Kairui Song <kasong@redhat.com>
54 lines
2.2 KiB
Plaintext
54 lines
2.2 KiB
Plaintext
# Kernel Version string for the -kdump kernel, such as 2.6.13-1544.FC5kdump
|
|
# If no version is specified, then the init script will try to find a
|
|
# kdump kernel with the same version number as the running kernel.
|
|
KDUMP_KERNELVER=""
|
|
|
|
# The kdump commandline is the command line that needs to be passed off to
|
|
# the kdump kernel. This will likely match the contents of the grub kernel
|
|
# line. For example:
|
|
# KDUMP_COMMANDLINE="ro root=LABEL=/"
|
|
# Dracut depends on proper root= options, so please make sure that appropriate
|
|
# root= options are copied from /proc/cmdline. In general it is best to append
|
|
# command line options using "KDUMP_COMMANDLINE_APPEND=".
|
|
# If a command line is not specified, the default will be taken from
|
|
# /proc/cmdline
|
|
KDUMP_COMMANDLINE=""
|
|
|
|
# This variable lets us remove arguments from the current kdump commandline
|
|
# as taken from either KDUMP_COMMANDLINE above, or from /proc/cmdline
|
|
# NOTE: some arguments such as crashkernel will always be removed
|
|
KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug quiet log_buf_len swiotlb cma hugetlb_cma"
|
|
|
|
# This variable lets us append arguments to the current kdump commandline
|
|
# after processed by KDUMP_COMMANDLINE_REMOVE
|
|
KDUMP_COMMANDLINE_APPEND="irqpoll maxcpus=1 reset_devices novmcoredd cma=0 hugetlb_cma=0"
|
|
|
|
# Any additional kexec arguments required. In most situations, this should
|
|
# be left empty
|
|
#
|
|
# Example:
|
|
# KEXEC_ARGS="--elf32-core-headers"
|
|
KEXEC_ARGS=""
|
|
|
|
#Where to find the boot image
|
|
#KDUMP_BOOTDIR="/boot"
|
|
|
|
#What is the image type used for kdump
|
|
KDUMP_IMG="vmlinuz"
|
|
|
|
# Logging is controlled by following variables in the first kernel:
|
|
# - @var KDUMP_STDLOGLVL - logging level to standard error (console output)
|
|
# - @var KDUMP_SYSLOGLVL - logging level to syslog (by logger command)
|
|
# - @var KDUMP_KMSGLOGLVL - logging level to /dev/kmsg (only for boot-time)
|
|
#
|
|
# In the second kernel, kdump will use the rd.kdumploglvl option to set the
|
|
# log level in the above KDUMP_COMMANDLINE_APPEND.
|
|
# - @var rd.kdumploglvl - logging level to syslog (by logger command)
|
|
# - for example: add the rd.kdumploglvl=3 option to KDUMP_COMMANDLINE_APPEND
|
|
#
|
|
# Logging levels: no logging(0), error(1),warn(2),info(3),debug(4)
|
|
#
|
|
# KDUMP_STDLOGLVL=3
|
|
# KDUMP_SYSLOGLVL=0
|
|
# KDUMP_KMSGLOGLVL=0
|