Resolves: bz2232499
Upstream: Fedora Rawhide
Conflict: None
commit 4b7b7736ee
Author: Sourabh Jain <sourabhjain@linux.ibm.com>
Date: Wed Aug 2 20:36:48 2023 +0530
Introduce a function to get reserved memory size
The size of the reserved memory in the functions show_reserved_mem,
check_crash_mem_reserved, and do_estimate are fetched from the sysfs
node `/sys/kernel/kexec_crash_size`. However, in the case of fadump,
the reserved area size is instead present in
/sys/kernel/fadump/mem_reserved.
For example:
$ kdumpctl showmem
kdump: Dump mode is fadump
kdump: Reserved 0MB memory for crash kernel
The above command showed 0MB for Reserved memory which is incorrect, the
actual reservation was 2048MB.
To resolve this issue a new helper function is introduced to fetch
reserved memory size based on the dump mode. For "fadump" mode,
it looks in `/sys/kernel/fadump/mem_reserved`, otherwise, it uses
`/sys/kernel/kexec_crash_size`. And all functions that previously
fetching reserved memory directly from `/sys/kernel/kexec_crash_size`
sysfs node are now updated to use this new function to get the reserved
memory size.
With the fix in place, the `kdumpctl showmem` command will now display
correct reserved memory size.
$ kdumpctl showmem
kdump: Dump mode is fadump
kdump: Reserved 2048MB memory for crash kernel
Signed-off-by: Sourabh Jain <sourabhjain@linux.ibm.com>
Reported-by: Sachin P Bappalige <sachinpb@linux.vnet.ibm.com>
Reviewed-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Lichen Liu <lichliu@redhat.com>
Resolves: bz2232499
Upstream: Fedora Rawhide
Conflict: Some newer patches has been rebased, which caused git am to
encounter some problems.
commit fc7c65312a
Author: Sourabh Jain <sourabhjain@linux.ibm.com>
Date: Thu Aug 17 16:38:35 2023 +0530
powerpc: update fadump sysfs node path
The fadump sysfs nodes /sys/kernel/fadump_[enabled|registered], have
been relocated to /sys/kernel/fadump/[enabled|registered] by kernel
commits d418b19f34ed ("powerpc/fadump: Reorganize /sys/kernel/fadump_*
sysfs files").
To ensure compatibility, symbolic links were added for each relocated
sysfs entry. Nonetheless, note that these symbolic links might be
removed later, as they have been deprecated by kernel commit
3f5f1f22ef10 ("Documentation/ABI: Mark /sys/kernel/fadump_* sysfs files
deprecated")
This patch updates the scripts to use the updated fadump sysfs files.
Signed-off-by: Sourabh Jain <sourabhjain@linux.ibm.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Lichen Liu <lichliu@redhat.com>
Resolves: bz2232499
Upstream: Fedora Rawhide
Conflict: Some newer patches has been rebased, which caused git am to
encounter some problems.
commit b9fd7a4076
Author: Philipp Rudo <prudo@redhat.com>
Date: Thu Jan 12 16:31:02 2023 +0100
kdumpctl: merge check_current_{kdump,fadump}_status
Both functions are almost identical. The only differences are (1) the
sysfs node the status is read from and (2) the fact the fadump version
doesn't verify if the file it's trying to read actually exists. Thus
merge the two functions and get rid of the check_current_status wrapper.
While at it rename the function to is_kernel_loaded which explains
better what the function does.
Finally, after moving FADUMP_REGISTER_SYS_NODE shellcheck can no longer
access the definition and starts complaining about it not being quoted.
Thus quote all uses of FADUMP_REGISTER_SYS_NODE.
Signed-off-by: Philipp Rudo <prudo@redhat.com>
Reviewed-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Lichen Liu <lichliu@redhat.com>
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2165839
Upstream: Fedora
Conflict: None
commit f3139012f2
Author: Pingfan Liu <piliu@redhat.com>
Date: Tue Jun 20 08:50:31 2023 +0800
kdump-lib: Match 64k debug kernel in prepare_kdump_bootinfo()
For kernel 64k variant, it terminates with substring 64k-debug, e.g.
vmlinuz-5.14.0-327.el9.aarch64+64k-debug.
Providing an extra matching pattern to filter out it.
Signed-off-by: Pingfan Liu <piliu@redhat.com>
Reviewed-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Pingfan Liu <piliu@redhat.com>
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2160676
Upstream: Fedora rawhide
Conflict: None
commit 7a2c4cbc3b
Author: Pingfan Liu <piliu@redhat.com>
Date: Tue Jun 13 17:43:23 2023 +0800
kdump-lib: Evaluate the memory consumption by smmu and mlx5 separately
On 4k and 64k kernels, the typical consumption values for SMMU are 36MB
and 384MB, respectively. Hence for 64k kernel, the consumption by smmu
should be taken into account carefully.
To do it by adding the extra 384MB value if installing a 64k kernel.
The upper limit value 384MB is calculated according to the formula in
the kernel smmu driver.
As for mlx5 network cards, it is measured by a pratical test, 200M for
64k variant, 150M for 4k variant
Signed-off-by: Pingfan Liu <piliu@redhat.com>
Reviewed-by: Coiby Xu <coxu@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Pingfan Liu <piliu@redhat.com>
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2160676
Upstream: Fedora rawhide
Conflict: None
commit 05c4861443
Author: Pingfan Liu <piliu at redhat.com>
Date: Tue Jun 13 17:43:22 2023 +0800
kdump-lib: add support for 64K aarch64
On aarch64, both 4K and 64K kernel can be installed, while they demand
different size reserved memory for kdump kernel.
'get_conf PAGE_SIZE' can not work if installing a 64K kernel when
running a 4K kernel. Hence resorting to the kernel release naming rules.
At present, the 64K kernel has the keyword '64k' in its suffix.
The base line for 64K is decided based on 4K. The diff 100M is picked up
since on a high end machine without smmu enabled, the diff of MemFree is
82M.
As for the smmu case, a huge difference in the memory consumption lies
between 64k and 4k driver. And it should be calculated separatedly.
Signed-off-by: Pingfan Liu <piliu@redhat.com>
Reviewed-by: Coiby Xu <coxu@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Pingfan Liu <piliu@redhat.com>
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2160676
Upstream: Fedora rawhide
Conflict: None
commit d8b961be37
Author: Pingfan Liu <piliu@redhat.com>
Date: Tue Jun 13 17:43:21 2023 +0800
kdump-lib: Introduce parse_kver_from_path() to get kernel version from its path name
kdump_get_arch_recommend_crashkernel() expects the kernel version info,
while _update_kernel() provides the absolute path, which contains the
kernel version info.
This patch introduce a dedicated function parse_kver_from_path() to
extract the kernel info from the path
Credit to Philipp, who contributes the original code.
Signed-off-by: Pingfan Liu <piliu@redhat.com>
Reviewed-by: Coiby Xu <coxu@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Pingfan Liu <piliu@redhat.com>
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2160676
Upstream: Fedora rawhide
Conflict: Drop shellspec test case
commit 51efbcf83e
Author: Pingfan Liu <piliu@redhat.com>
Date: Tue Jun 13 17:43:20 2023 +0800
kdump-lib: Introduce a help function _crashkernel_add()
This help function can manipulate the crashkernel cmdline by adding an
number for each item. Also a basic test case for _crashkernel_add() is
provided in this patch.
Credit to Philipp, who contributes the original code.
Signed-off-by: Pingfan Liu <piliu@redhat.com>
Reviewed-by: Coiby Xu <coxu@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Pingfan Liu <piliu@redhat.com>
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2165839
Upstream: Fedora
Conflict: None
commit 81d3cc344d
Author: Pingfan Liu <piliu@redhat.com>
Date: Thu Apr 20 11:26:34 2023 +0800
kdump-lib: fix the matching pattern for debug-kernel
On aarch64, a 64k kernel's name looks like:
vmlinuz-5.14.0-300.el9.aarch64+64k and the corresponding debug kernel's
name looks like: vmlinuz-5.14.0-300.el9.aarch64+64k-debug, which ends
with the suffix -debug instead of +debug.
Fix the matching pattern by [+|-]debug
Signed-off-by: Pingfan Liu <piliu@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Pingfan Liu <piliu@redhat.com>
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2165839
Upstream: Fedora
Conflict: None
commit 88919b73f0
Author: Philipp Rudo <prudo@redhat.com>
Date: Thu Jan 12 16:31:04 2023 +0100
kdump-lib: always specify version in is_squash_available
is_squash_available is only used in dracut-module-setup.sh and mkdumprd.
Neither of the two scripts calls prepare_kdump_bootinfo which determines
and sets KDUMP_KERNELVER. Thus KDUMP_KERNELVER is only non-zero if it
explicitly specified by the user in /etc/sysconfig/kdump (and the file
gets sourced, which is not the case for drachu-module-setup.sh).
In theory this can even lead to bugs. For example consider the case when
a debug kernel is running. In that case kdumpctl will try to use the
non-debug version of the kernel while is_squash_available will make its
decision based on the debug version. So in case the debug kernel has
squash available but the non-debug kernel doesn't mkdumprd will try to
add it nevertheless.
Thus factor out the kernel version detection from prepare_kdump_bootinfo
and make use of the new function when checking for the availability of
those kernel modules.
Signed-off-by: Philipp Rudo <prudo@redhat.com>
Reviewed-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Pingfan Liu <piliu@redhat.com>
Resolves: bz2169720
Upstream: src.fedoraproject.org/rpms/kexec-tools.git
Conflicts: Small context difference in kexec-tools.spec
commit ea7be0608e
Author: Philipp Rudo <prudo@redhat.com>
Date: Fri May 5 17:14:42 2023 +0200
kdumpctl: Add basic UKI support
A Unified Kernel Image (UKI) is a single EFI PE executable combining an
EFI stub, a kernel image, an initrd image, and the kernel command line.
They are defined in the Boot Loader Specification [1] as type #2
entries. UKIs have the advantage that all code as well as meta data that
is required to boot the system, not only the kernel image, is combined
in a single PE file and can be signed for EFI SecureBoot. This extends
the coverage of SecureBoot extensively.
For RHEL support for UKI were included into kernel-ark with 16c7e3ee836e
("redhat: Add sub-RPM with a EFI unified kernel image for virtual
machines").
There are two problems with UKIs from the kdump point of view at the
moment. First, they cannot be directly loaded via kexec_file_load and
second, the initrd included isn't suitable for kdump. In order to enable
kdump on systems with UKIs build the kdump initrd as usual and extract
the kernel image before loading the crash kernel.
[1] https://uapi-group.org/specifications/specs/boot_loader_specification/
Signed-off-by: Philipp Rudo <prudo@redhat.com>
Reviewed-by: Pingfan Liu <piliu@redhat.com>
Reviewed-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
Resolves: bz2169720
Upstream: src.fedoraproject.org/rpms/kexec-tools.git
Conflicts: None
commit 81d89c885f
Author: Philipp Rudo <prudo@redhat.com>
Date: Fri May 5 17:14:40 2023 +0200
kdumpctl: Move get_kernel_size to kdumpctl
The function is only used in do_estimate. Move it to kdumpctl to
prevent confusion.
Signed-off-by: Philipp Rudo <prudo@redhat.com>
Reviewed-by: Pingfan Liu <piliu@redhat.com>
Reviewed-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
Resolves: bz2169720
Upstream: src.fedoraproject.org/rpms/kexec-tools.git
Conflicts: drop removal of irqpoll in prepare_cmdline due to missing
d55a056 ("kdumpctl: move aws workaround to kdump-lib") and
d593bfa ("KDUMP_COMMANDLINE: remove irqpoll parameter on aws aarch64 platform")
commit 0f6ad91be8
Author: Philipp Rudo <prudo@redhat.com>
Date: Thu Jan 12 16:31:07 2023 +0100
kdump-lib: fix prepare_cmdline
A recently added unit test found that prepare_cmdline has several
problems. For example an empty remove list will remove all spaces or
when the cmdline contains a parameter with quoted values containing
spaces will only remove the beginning up to the first space. Furthermore
the old design requires lots of subshells and pipes.
This patch rewrites prepare_cmdline in a way that makes the unit test
happy and tries to use as many bash built-ins as possible.
Signed-off-by: Philipp Rudo <prudo@redhat.com>
Reviewed-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
Resolves: bz2174836
Upstream: Fedora
Conflict: None
commit f9c32372d2
Author: Lichen Liu <lichliu@redhat.com>
Date: Tue Jun 21 16:55:09 2022 +0800
kdump-lib: Add the CoreOS kernel dir to the boot_dirlist
The kernel of CoreOS is not in the standard locations, add
/boot/ostree/* to the boot_dirlist to find the vmlinuz.
Signed-off-by: Lichen Liu <lichliu@redhat.com>
Acked-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Lichen Liu <lichliu@redhat.com>
Resolves: bz2174836
Upstream: Fedora
Conflict: None
commit f9c32372d2
Author: Dusty Mabe <dusty@dustymabe.com>
Date: Wed Jun 22 12:34:12 2022 -0400
kdump-lib: attempt to fix BOOT_IMAGE detection
Currently $boot_img can get bad data if running on a platform
that doesn't set BOOT_IMAGE in the kernel command line. For
example, currently:
- s390x Fedora CoreOS machine:
```
[root@cosa-devsh ~]# sed "s/^BOOT_IMAGE=\((\S*)\)\?\(\S*\) .*/\2/" /proc/cmdline
mitigations=auto,nosmt ignition.platform.id=qemu ostree=/ostree/boot.0/fedora-coreos/2a72567ac8f7ed678c3ac89408f795e6ccd4e97b41e14af5f471b6a807e858b9/0 root=UUID=2a88436a-3b6b-4706-b33a-b8270bd87cde rw rootflags=prjquota boot=UUID=f4b2eaa5-9317-4798-85cf-308c477fee4c crashkernel=600M
```
where on a platform that uses GRUB we get:
- x86_64 Fedora CoreOS machine:
```
[root@cosa-devsh ~]# sed "s/^BOOT_IMAGE=\((\S*)\)\?\(\S*\) .*/\2/" /proc/cmdline
/ostree/fedora-coreos-af4f6cc7b9ff486cfa647680b180e989c72c8eed03a34a42e7328e49332bd20e/vmlinuz-5.18.5-200.fc36.x86_64
```
We should change the setting of the boot_img variable such that it will
be empty if BOOT_IMAGE doesn't exist.
With this change on the s390x machine:
```
[root@cosa-devsh ~]# grep -P -o '^BOOT_IMAGE=(\S+)' /proc/cmdline | sed "s/^BOOT_IMAGE=\((\S*)\)\?\(\S*\)/\2/"
[root@cosa-devsh ~]#
```
This change mattered much more before the change in c5bdd2d which changed
the following line from [[ -n $boot_img ]] to [[ "$boot_img" == *"$kdump_kernelver" ]].
Still I think this change has merit.
Signed-off-by: Dusty Mabe <dusty@dustymabe.com>
Acked-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Lichen Liu <lichliu@redhat.com>
Resolves: bz2174836
Upstream: Fedora
Conflict: None
commit a1ebf0b565
Author: Dusty Mabe <dusty@dustymabe.com>
Date: Fri Jun 24 09:57:03 2022 -0400
kdump-lib: change how ostree based systems are detected
The current recommendation is to check for /run/ostree-booted.
See https://bugzilla.redhat.com/show_bug.cgi?id=2092012#c0
Signed-off-by: Dusty Mabe <dusty@dustymabe.com>
Acked-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Lichen Liu <lichliu@redhat.com>
Resolves: bz2174836
Upstream: Fedora
Conflict: None
commit 980f10aa40
Author: Dusty Mabe <dusty@dustymabe.com>
Date: Wed Jun 22 11:58:31 2022 -0400
kdump-lib: clear up references to Atomic/CoreOS
There are many variants on OSTree based systems these days so
we should probably refer to the class of systems as "OSTree
based systems". Also, Atomic Host is dead.
Signed-off-by: Dusty Mabe <dusty@dustymabe.com>
Acked-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Lichen Liu <lichliu@redhat.com>
resolves: bz2083475
upstream: fedora
conflict: none
commit 0a5b71d123
Author: Tao Liu <ltao@redhat.com>
Date: Sat Oct 8 15:41:39 2022 +0800
Add lvm2 thin provision dump target checker
We need to check if a directory or a device is lvm2 thinp target.
First, we use get_block_dump_target() to convert dump path into
block device, then we check if the device is lvm2 thinp target by
cmd lvs.
is_lvm2_thinp_device is now located in kdump-lib-initramfs.sh, for it
will be used in 2nd kernel. is_lvm2_thinp_dump_target is located in
kdump-lib.sh, for it is only used in 1st kernel, and it has dependencies
which exist in kdump-lib.sh.
Signed-off-by: Tao Liu <ltao@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2085347
conflict: yes, small conflict due to patch
"kdumpctl: drop DUMP_TARGET variable" not
backported to rhel9.
commit c743881ae6
Author: Tao Liu <ltao@redhat.com>
Date: Fri Sep 23 18:13:11 2022 +0800
virtiofs support for kexec-tools
This patch add virtiofs support for kexec-tools by introducing a new option
for /etc/kdump.conf:
virtiofs myfs
Where myfs is a variable tag name specified in qemu cmdline
"-device vhost-user-fs-pci,tag=myfs".
The patch covers the following cases:
1) Dumping VM's vmcore to a virtiofs shared directory;
2) When the VM's rootfs is a virtiofs shared directory and dumping the
VM's vmcore to its subdirectory, such as /var/crash;
3) The combination of case 1 & 2: The VM's rootfs is a virtiofs shared
directory and dumping the VM's vmcore to another virtiofs shared
directory.
Case 2 & 3 need dracut >= 057, otherwise VM cannot boot from virtiofs
shared rootfs. But it is not the issue of kexec-tools.
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
Upstream: fedora
Resolves: bz2045949
Resolves: bz2044804
Conflict: none
commit fc1c79ffd2
Author: Tao Liu <ltao@redhat.com>
Date: Sat Oct 8 12:09:08 2022 +0800
Seperate dracut and dracut-squash compressor for zstd
Previously kexec-tools will pass "--compress zstd" to dracut. It
will make dracut to decide whether: a) call mksquashfs to make a
zstd format squash-root.img, b) call cmd zstd to make a initramfs.
Since dracut(>= 057) has decoupled the compressor for dracut and
dracut-squash, So in this patch, we will pass the compressor seperately.
Note:
The is_squash_available && !dracut_has_option --squash-compressor
&& !is_zsdt_command_available case is left unprocessed on purpose.
Actually, the situation when we want to call zstd compression is:
1) If squash function OK, we want dracut to invoke mksquashfs to make
a zstd format squash-root.img within initramfs.
2) If squash function is not OK, and cmd zstd presents, we want dracut
to invoke cmd zstd to make a zstd format initramfs.
is_zstd_command_available check can handle case 2 completely.
However, for the is_squash_available check, it cannot handle case 1
completely. It only checks if the kernel supports squashfs, it doesn't
check whether the squash module has been added by dracut when making
initramfs. In fact, in kexec-tools we are unable to do the check,
there are multiple ways to forbit dracut to load a module, such as
"dracut -o module" and "omit_dracutmodules in dracut.conf".
When squash dracut module is omitted, is_squash_available check will
still pass, so "--compress zstd" will be appended to dracut cmdline,
and it will call cmd zstd to do the compression. However cmd zstd may
not exist, so it fails.
The previous "--compress zstd" is ambiguous, after the intro of
"--squash-compressor", "--squash-compressor" only effect for
mksquashfs and "--compress" only effect for specific cmd.
So for the is_squash_available && !dracut_has_option
--squash-compressor && !is_zsdt_command_available case, we just leave
it to be handled the default way.
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
Resolves: bz2129842
Upstream: Fedora
Conflict: None
commit d905d49c08
Author: Hari Bathini <hbathini@linux.ibm.com>
Date: Fri Sep 16 19:07:24 2022 +0530
fadump: avoid non-debug kernel use for fadump case
Since commit c5bdd2d8f1 ("kdump-lib: use non-debug kernels first"),
non-debug kernel is preferred, over the debug variant, as dump capture
kernel to reduce memory consumption. This works alright for kdump as
the capture kernel is loaded using kexec.
In case of fadump, regular boot loader is used to load the capture
kernel. So, the default kernel needs to be used as capture kernel as
well. But with commit c5bdd2d8f1, initrd of a different kernel is
made dump capture capable, breaking fadump's ability to capture dump
properly. Fix this by sticking with the debug variant in case of
fadump.
Fixes: c5bdd2d8f1 ("kdump-lib: use non-debug kernels first")
Signed-off-by: Hari Bathini <hbathini@linux.ibm.com>
Acked-by: Lichen Liu <lichliu@redhat.com>
Acked-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Lichen Liu <lichliu@redhat.com>
Resolves: bz2076425
Upstream: Fedora
Conflict: None
commit c5bdd2d8f1
Author: Lichen Liu <lichliu@redhat.com>
Date: Mon Jun 13 12:08:08 2022 +0800
kdump-lib: use non-debug kernels first
Kdump uses currently running kernel as default, but when currently
running kernel is a debug kernel, it will consume more memory,
which may cause out-of-memory and fail to collect vmcore.
Now we will try to use non-debug kernels first if possible.
Also extract the logic of determine KDUMP_KERNEL from
prepare_kdump_bootinfo into a function. This function will return
KDUMP_KERNEL given a kernel version.
Signed-off-by: Lichen Liu <lichliu@redhat.com>
Acked-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Lichen Liu <lichliu@redhat.com>
Resolves: bz2076425
Upstream: Fedora
Conflict: None
commit aa9bb8f8ce
Author: Philipp Rudo <prudo@redhat.com>
Date: Fri Mar 25 15:46:59 2022 +0100
kdump-lib: fix typo in variable name
in prepare_kdump_bootinfo s/defaut/default/.
While at it declare it with the other local variables as local.
Signed-off-by: Philipp Rudo <prudo@redhat.com>
Reviewed-by: Tao Liu <ltao@redhat.com>
Reviewed-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Lichen Liu <lichliu@redhat.com>
Resolves: bz2041729
Upstream: Fedora
Conflict: None
commit b92bc6e0a7
Author: Pingfan Liu <piliu@redhat.com>
Date: Mon Jun 13 10:25:26 2022 +0800
crashkernel: optimize arm64 reserved size if PAGE_SIZE=4k
On RHEL9 and Fedora, the arm64 platform only supports 4KB page size.
the reserved memory size can be aligned to that on x86_64.
Introducing a new formula for 4KB on arm64, which bases on x86_64 plus
extra 64MB.
Signed-off-by: Pingfan Liu <piliu@redhat.com>
Acked-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Pingfan Liu <piliu@redhat.com>
upstream: fedora
resolves: bz2096132
conflict: none
commit 2bbc7512a2
Author: Tao Liu <ltao@redhat.com>
Date: Wed Feb 16 14:26:38 2022 +0800
kdump-lib.sh: Check the output of blkid with sed instead of eval
Previously the output of blkid is not checked. If the output
is empty, the eval will report the following error message:
/lib/kdump/kdump-lib.sh: eval: line 925: syntax error near unexpected token `;'
/lib/kdump/kdump-lib.sh: eval: line 925: `; echo $TYPE'
For example, we can observe such a failing when blkid is invoked
against a lvm thinpool block device:
$ blkid -u filesystem,crypto -o export -- "/dev/block/253\:2"
$ echo $?
2
$ udevadm info /dev/block/253\:2|grep S\:
S: mapper/vg00-thinpoll_tmeta
In this patch, we will use sed instead of eval, to output the
fstype of block device if any.
Signed-off-by: Tao Liu <ltao@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
Resolves: bz2074473
Upstream: Fedora
Conflict: None
commit 4f702c81e9
Author: Coiby Xu <coxu@redhat.com>
Date: Thu May 12 10:48:31 2022 +0800
improve get_recommend_size
This patch rewrites get_recommend_size to get rid of the following
limitations,
1. only supports ranges in crashkernel sorted in increasing order
2. the first entry of crashkernel should have only a single digit and
it's in gigabytes
Suggested-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Resolves: bz2074473
Upstream: Fedora
Conflict: None
commit 5c23b6ebb7
Author: Coiby Xu <coxu@redhat.com>
Date: Sat May 7 16:30:39 2022 +0800
fix a calculation error in get_system_size
Recently, it's found 'kdumpctl estimate' returns 512M while the system
reserves 1024M kdump memory in a case. This happens because the ranges
in /proc/iomem are inclusively. For example, "0-1: System RAM" means 2
bytes of system memory other than 1 byte. Fix this error by adding one
more byte.
Note
1. the function has been simplified as well.
2. define PROC_IOMEM as /proc/iomem for the sake of unit tests
Reported-by: Ruowen Qin <ruqin@redhat.com>
Fixes: 1813189 ("kdump-lib.sh: introduce functions to return recommened mem size")
Suggested-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
upstream: fedora
conflict: none
resolves: bz2042726
commit 99de77bba7
Author: Tao Liu <ltao@redhat.com>
Date: Fri Jan 21 16:08:47 2022 +0800
Revert "Remove trace_buf_size and trace_event from the kernel bootparameters of the kdump kernel"
There is a mechanism to keep memory consumption minimum, i.e. equal
to trace_buf_size=1, until tracing by ftrace is actually started:
tracing: keep ring buffer to minimum size till used
73c5162aa3
Since ftrace is usually never used in the kdump 2nd kernel, the kdump
2nd kernel behaves in the same way with or without trace_buf_size=1.
So the issue which the patch want to solve never exists. Let's revert
the patch for better maintainance and avoid confusion.
ref link: https://bugzilla.redhat.com/show_bug.cgi?id=2034501#c20
This reverts commit f39000f.
Signed-off-by: Tao Liu <ltao@redhat.com>
Acked-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
Resolves: bz2045971
Upstream: Fedora
Conflict: None
commit 2df55984f6
Author: Coiby Xu <coxu@redhat.com>
Date: Wed Jan 26 08:48:18 2022 +0800
fix broken kdump_get_arch_recommend_size
shellcheck finds the following problem,
$ shellcheck kdump-lib.sh
In kdump-lib.sh line 876:
get_recommend_size "$sys_mem" "$ck_cmdline"
^---------^ SC2154: ck_cmdline is referenced but not assigned (did you mean '_ck_cmdline'?).
s/ck_cmdline/_ck_cmdline to fix kdump_get_arch_recommend_size.
Note s/sys_mem/_sys_mem as well to make the changes consistent.
Fixes: 105c016 ("factor out kdump_get_arch_recommend_crashkernel")
Signed-off-by: Coiby Xu <coxu@redhat.com>
Acked-by: Tao Liu <ltao@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Resolves: bz2045969
Upstream: Fedora
Conflict: None
commit c67a836cde
Author: Coiby Xu <coxu@redhat.com>
Date: Tue Jan 25 16:16:58 2022 +0800
remove the upper bound of 102400T for the range in default crashkernel
This patch makes the default crashkernel value consistent with previous
one.
Fixes: 105c016 ("factor out kdump_get_arch_recommend_crashkernel")
Signed-off-by: Coiby Xu <coxu@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Resolves: bz2031736
Upstream: Fedora
Conflict: None
commit 3cd561fcbcb3ba4f285e746d81e1e6dae17447c3 (HEAD)
Author: Pingfan Liu <piliu@redhat.com>
Date: Tue Jan 18 10:42:00 2022 +0800
move variable FENCE_KDUMP_SEND from kdump-lib.sh to kdump-lib-initramfs.sh
Since kdump-lib-initramfs.sh is included by kdump-lib.sh, and
FENCE_KDUMP_SEND is used by both 1st and 2nd kernel, moving
FENCE_KDUMP_SEND from kdump-lib.sh to kdump-lib-initramfs.sh.
Signed-off-by: Pingfan Liu <piliu@redhat.com>
Acked-by: Tao Liu <ltao@redhat.com>
Signed-off-by: Pingfan Liu <piliu@redhat.com>
resolves: bz1896698
upstream: fedora
conflict: none
commit b8ec5cbda89610244fdd4711e5974350f78e63e3
Author: Tao Liu <ltao@redhat.com>
Date: Fri Jan 7 19:47:06 2022 +0800
Set zstd as recommented for kexec-tools
This patch will make zstd as recommended instead of required for
kexec-tools. If zstd command/package is unavaliable, it can failback to invoke
gzip when making kdump initramfs.
Fixes: 0311f6e ("Set zstd as the default compression method for kdump initrd")
Signed-off-by: Tao Liu <ltao@redhat.com>
Acked-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
resolves: bz1896698
upstream: fedora
conflict: none
commit 0311f6e25b
Author: Tao Liu <ltao@redhat.com>
Date: Wed Jan 5 17:42:12 2022 +0800
Set zstd as the default compression method for kdump initrd
zstd has better compression ratio and time consumption balance.
When no customized compression method specified in kdump.conf,
we will use zstd as the default compression method.
**The test method:
I installed kexec-tools with and without the patch, executing the following
command for 4 times, and calculate the averange time:
$ rm -f /boot/initramfs-*kdump.img && time kdumpctl rebuild && \
ls -ail /boot/initramfs-*kdump.img
**The test result:
Bare metal x86_64 machine:
dracut with squash module
zlib lzo xz lz4 zstd
real 10.6282 11.0398 11.395 8.6424 10.1676
user 9.8932 11.9072 14.2304 2.8286 8.6468
sys 3.523 3.4626 3.6028 3.5 3.4942
size of
kdump.img 30575616 31419392 27102208 36666368 29236224
dracut without squash module
zlib lzo xz lz4 zstd
real 9.509 19.4876 11.6724 9.0338 10.267
user 10.6028 14.516 17.8662 4.0476 9.0936
sys 2.942 2.9184 3.0662 2.9232 3.0662
size of
kdump.img 19247949 19958120 14505056 21112544 17007764
PowerVM hosted ppc64le VM:
dracut with squash module | dracut without sqaush module
zlib zstd | zlib zstd
real 10.6742 10.7572 | 9.7676 10.5722
user 18.754 19.8338 | 20.7932 13.179
sys 1.8358 1.864 | 1.637 1.663
|
size of |
kdump.img 36917248 35467264 | 21441323 19007108
**discussion
zstd has a better compression ratio and time consumption balance.
Acked-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
resolves: bz2031735
upstream: fedora
conflict: none
commit 2bd59ee156 (origin/rawhide, origin/main)
Author: Tao Liu <ltao@redhat.com>
Date: Thu Jan 6 11:46:54 2022 +0800
kdump-lib.sh: Escape '|' for 'failure_action|default' in is_dump_to_rootfs
The '|' in 'failure_action|default' should be replaced with '\|' when
passed to kdump_get_conf_val function. Because '|' needs to be escaped
to mean OR operation in sed regex, otherwise it will consider
'failure_action|default' as a whole string.
Fixes: ab1ef78 ("kdump-lib.sh: use kdump_get_conf_val to read config values")
Signed-off-by: Tao Liu <ltao@redhat.com>
Acked-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
Resolves: bz1895258
Upstream: Fedora
Conflict: None
commit 105c01691a
Author: Coiby Xu <coxu@redhat.com>
Date: Tue Nov 16 11:26:31 2021 +0800
factor out kdump_get_arch_recommend_crashkernel
Factor out kdump_get_arch_recommend_crashkernel to prepare for
kdump-anaconda-plugin for example to retrieve the default crashkernel
value.
Note the support of crashkenrel.default is dropped.
Reviewed-by: Pingfan Liu <piliu@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Resolves: bz1895258
Upstream: Fedora
Conflict: None
commit 34d27c4c30
Author: Coiby Xu <coxu@redhat.com>
Date: Tue Nov 16 09:12:49 2021 +0800
update default crashkernel value
It has been decided to increase default crashkernel value to reduce the
possibility of OOM.
Fixes: 7b7ddab ("kdump-lib.sh: kdump_get_arch_recommend_size uses crashkernel.default")
Reviewed-by: Pingfan Liu <piliu@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Resolves: bz1931802
Upstream: Fedora
Conflict: The upstream commit was submitted before shfmt and .editorconfig.
So there are issues like 4 spaces verse tab indentation, double
brackets verse single bracket and etc.
commit 596fa0a07f
Author: Pingfan Liu <piliu@redhat.com>
Date: Thu Feb 18 14:01:18 2021 +0800
kdumpctl: enable secure boot on ppc64le LPARs
On ppc64le LPAR, secure-boot is a little different from bare metal,
Where
host secure boot: /ibm,secure-boot/os-secureboot-enforcing DT property exists
while
guest secure boot: /ibm,secure-boot >= 2
Make kexec-tools adapt to LPAR
Signed-off-by: Pingfan Liu <piliu@redhat.com>
Acked-by: Kairui Song <kasong@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
upstream: fedora
resolves: bz2003832
conflict:
Regenerated with shfmt command because of
too much hunk patches. When comparing with the original
patch, only patch "kdumpctl: enable secure boot on ppc64le LPARs"
related hunks are different.
commit 4cdce1f489
Author: Kairui Song <kasong@redhat.com>
Date: Tue Sep 14 03:09:30 2021 +0800
kdump-lib.sh: reformat with shfmt
This is a batch update done with:
shfmt -s -w kdump-lib.sh
Clean up code style and reduce code base size, no behaviour change.
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict: none
commit 4f01cb1b0a
Author: Kairui Song <kasong@redhat.com>
Date: Mon Sep 13 01:18:04 2021 +0800
kdump-lib.sh: fix variable quoting issue
Fixed quoting issues found by shellcheck, no feature
change. This should fix many errors when there is space
in any shell variables.
And fixed how remove_cmdline_param is being called in prepare_cmdline.
Kernel parameters can have space like: param="spaces in here". So currently
remove_cmdline_param is broken since its args always get split by space.
But prepare_cmdline is expecting remove_cmdline_param to split its args
by space and passing a list of kernel args separated by space as a whole arg.
So fix that by using `xargs` to parse and split the args properly, then
call remove_cmdline_param.
Following quoting related issues are fixed (check the link
for example code and what could go wrong):
https://github.com/koalaman/shellcheck/wiki/SC1007https://github.com/koalaman/shellcheck/wiki/SC2046https://github.com/koalaman/shellcheck/wiki/SC2053https://github.com/koalaman/shellcheck/wiki/SC2060https://github.com/koalaman/shellcheck/wiki/SC2068https://github.com/koalaman/shellcheck/wiki/SC2086
Signed-off-by: Kairui Song <kasong@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict: none
commit f39000f524
Author: fj1508ic@fujitsu.com <fj1508ic@fujitsu.com>
Date: Tue Jan 26 06:37:28 2021 +0000
Remove trace_buf_size and trace_event from the kernel bootparameters of the kdump kernel
The kdump kernel uses resources for ftrace because trace_buf_size, which
specifies the ring buffer size for ftrace, and trace_event, which specifies
a valid trace event, are not removed, but the kdump kernel does not require
ftrace.
trace_buf_size is ignored if the specified size is 0, so specify 1.
Signed-off-by: Hisashi Nagaoka <fj1508ic@fujitsu.com>
Acked-by: Kairui Song <kasong@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict: none
commit 319219d23b
Author: Kairui Song <kasong@redhat.com>
Date: Mon Sep 13 01:17:23 2021 +0800
kdump-lib.sh: fix a few ambiguous or redundant code
Fix a few ambiguous syntax issues and remove some unused variables.
Also refactor some code to make it more robust.
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict: none
commit c0edb80b8f
Author: Kairui Song <kasong@redhat.com>
Date: Wed Sep 8 13:31:31 2021 +0800
kdump-lib.sh: fix arithmetic operation syntax
Get rid of let, and remove useless '$' on arithmetic variables.
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict: none
commit 53813e8b9a
Author: Kairui Song <kasong@redhat.com>
Date: Wed Sep 8 02:48:17 2021 +0800
kdump-lib.sh: remove useless echo and cat
Replace echo "$(cmd)" and "var=$(cmd); echo $var" with just `cmd`.
And remove some useless cat.
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict: none
commit 58d3e6db3a
Author: Kairui Song <kasong@redhat.com>
Date: Wed Sep 8 15:20:42 2021 +0800
kdump-lib.sh: rework nmcli related functions
This fixes word splitting issue with nmcli args. Current kexec-tools
scripts won't call nmcli with correct arguments when there are space in
network interface name.
nmcli expects multiple parameters, but get_nmcli_value_by_field only
accepts two params and depends on shell word splitting to split the
_nm_show_cmd into multiple params, which is very fragile.
So switch the param order, simplified this function and now multiple
params can be used properly.
And get_nmcli_connection_show_cmd_by_ifname returns multiple
nmcli params in a single variable, it depend on shell word splitting to
split the words when calling nmcli. But this is very fragile and break
easily when there are any special character in the connection path.
This function is only introduced to get and cache the nmcli command
which contains the "connection name".
Actually only cache the "connection path" is enough. Callers should
just call get_nmcli_connection_apath_by_ifname to cache the path, and
a new helper get_nmcli_field_by_conpath is introduced here to get value
from nmcli. This way "connection path" can contain any character.
Also get rid of another nmcli_cmd usage in
get_nmcli_connection_apath_by_ifname which stores multiple params in a
single bash variable separated by space.
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict:
Patch hunk modified for function is_secure_boot_enforced().
commit 30090f3a15
Author: Kairui Song <kasong@redhat.com>
Date: Mon Sep 13 01:17:05 2021 +0800
kdump-lib.sh: replace '[ ]' with '[[ ]]' and get rid of legacy ``
Updated file syntax with following command:
sed -i -e 's/\(\s\)\[\s\([^]]*\)\s\]/\1\[\[\ \2 \]\]/g' kdump-lib.sh
(replace '[ ]' with '[[ ]]')
sed -i -e 's/`\([^`]*\)`/\$(\1)/g' kdump-lib.sh
(replace `...` with $(...))
And manually updated [[ ... -a ... ]] and [[ ... -o ... ]] with && and
||.
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict: none
commit a5faa052d4
Author: Kairui Song <kasong@redhat.com>
Date: Tue Sep 14 03:25:46 2021 +0800
kdump-lib-initramfs.sh: prepare to be a POSIX compatible lib
Move all functions needed in the second kernel from kdump-lib.sh
to kdump-lib-initramfs.sh, and update shebang headers.
Now, kdump-lib-initramfs.sh is an independent lib script, no longer
depend on kdump-lib.sh, and kdump-lib.sh is no longer needed for
the second kernel.
In later commits, functions in kdump-lib-initramfs.sh will be reworked
to be POSIX compatible, kdump-lib.sh will contain bash only functions.
POSIX shell have very limited features, eg. `local` keyword doesn't
exist in POSIX but we rely on that heavily. So kdump-lib.sh will
use bash syntax and contain the most complex helper and codes.
kdump-lib-initramfs.sh will contain the minimum set of helpers,
and be shared by both the first and second kernel.
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict: none
commit ab1ef78aa2
Author: Kairui Song <kasong@redhat.com>
Date: Wed Aug 4 01:18:48 2021 +0800
kdump-lib.sh: use kdump_get_conf_val to read config values
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict: none
commit 09ccf88405
Author: Kairui Song <kasong@redhat.com>
Date: Mon Aug 16 23:25:14 2021 +0800
kdump-lib.sh: add a config value retrive helper
Add a helper kdump_get_conf_val to replace get_option_value.
It can help cover more corner cases in the code, like when there are
multiple spaces in config file, config value separated by a tab,
heading spaces, or trailing comments.
And this uses "sed group command" and "sed hold buffer", make it much
faster than previous `grep <config> | tail -1`.
This helper is supposed to provide a universal way for kexec-tools
scripts to read in config value. Currently, different scripts are
reading the config in many different fragile ways.
For example, following codes are found in kexec-tools script code base:
1. grep ^force_rebuild $KDUMP_CONFIG_FILE
echo $_force_rebuild | cut -d' ' -f2
2. grep ^kdump_post $KDUMP_CONFIG_FILE | cut -d\ -f2
3. awk '/^sshkey/ {print $2}' $conf_file
4. grep ^path $KDUMP_CONFIG_FILE | cut -d' ' -f2-
1, 2, and 4 will fail if the space is replaced by, e.g. a tab
1 and 2 might fail if there are multiple spaces between config name
and config value:
"kdump_post /var/crash/scripts/kdump-post.sh"
A space will be read instead of config value.
1, 2, 3 will fail if there are space in file path, like:
"kdump_post /var/crash/scripts dir/kdump-post.sh"
4 will fail if there are trailing comments:
"path /var/crash # some comment here"
And all will fail if there are heading space,
" path /var/crash"
And all will most likely cause problems if the config file contains
the same option more than once.
And all of them are slower than the new sed call. Old get_option_value
is also very slow and doesn't handle heading space.
Although we never claim to support heading space or tailing comments
before, it's harmless to be more robust on config reading, and many
conf files in /etc support heading spaces. And have a faster and
safer config reading helper makes it easier to clean up the code.
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
upstream: fedora
resolves: bz2003832
conflict: none
commit a0282ab22c
Author: Kairui Song <kasong@redhat.com>
Date: Tue Aug 3 19:49:51 2021 +0800
kdump-lib.sh: add a config format and read helper
Add a helper `kdump_read_conf` to replace read_strip_comments.
`kdump_read_conf` does a few more things:
- remove trailing spaces.
- format the content, remove duplicated spaces between name and value.
- read from KDUMP_CONFIG_FILE (/etc/kdump.conf) directly, avoid pasting
"/etc/kdump.conf" path everywhere in the code.
- check if config file exists, just in case.
Also unify the environmental variable, now KDUMP_CONFIG_FILE stands for
the default config location.
This helps avoid some shell pitfalls about spaces when reading config.
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
