rpms
/
kexec-tools
7
0
Fork 0
Code Issues Pull Requests Releases Activity

fadump: do not use squash to reduce image size 

Resolves: bz2139000
Upstream: Fedora
Conflict: None

commit 55b0dd03b36556b40e1f0d660b76bc5acb99b982
Author: Hari Bathini <hbathini@linux.ibm.com>
Date:   Mon Oct 31 15:42:20 2022 +0530

    fadump: do not use squash to reduce image size

    With commit fa9201b2 ("fadump: isolate fadump initramfs image within
    the default one"), initramfs image gets to hold two squash images, one
    for production kernel boot purpose and the other for capture kernel
    boot. Having separate images improved reliability for both production
    kernel and capture kernel boot scenarios, but the size of initramfs
    image became considerably larger.

    Instead of having squash images, compressing $initdir without using
    squash images reduced the size of initramfs image for fadump case by
    around 30%. So, avoid using squash for fadump case.

    Signed-off-by: Hari Bathini <hbathini@linux.ibm.com>
    Reviewed-by: Philipp Rudo <prudo@redhat.com>

Signed-off-by: Lichen Liu <lichliu@redhat.com>
This commit is contained in:
Lichen Liu 2022-12-22 13:28:00 +08:00
parent dc26e4b45e
commit 878faf6ab8
1 changed files with 3 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
mkfadumprd
View File

@ -38,7 +38,9 @@ FADUMP_INITRD="$MKFADUMPRD_TMPDIR/fadump.img"
# this file tells the initrd is fadump enabled
touch "$MKFADUMPRD_TMPDIR/fadump.initramfs"
ddebug "rebuild fadump initrd: $FADUMP_INITRD $DEFAULT_INITRD $KDUMP_KERNELVER"
if ! $MKDUMPRD "$FADUMP_INITRD" -i "$MKFADUMPRD_TMPDIR/fadump.initramfs" /etc/fadump.initramfs; then
# Don't use squash for capture image or default image as it negatively impacts
# compression ratio and increases the size of the initramfs image.
if ! $MKDUMPRD "$FADUMP_INITRD" -i "$MKFADUMPRD_TMPDIR/fadump.initramfs" /etc/fadump.initramfs --omit squash; then
perror_exit "mkfadumprd: failed to build image with dump capture support"
fi
@ -58,10 +60,6 @@ _dracut_isolate_args=(
/usr/lib/dracut/fadump-kernel-modules.txt
)
if is_squash_available; then
_dracut_isolate_args+=(--add squash)
fi
# Same as setting zstd in mkdumprd
if ! have_compression_in_dracut_args; then
if is_squash_available && dracut_have_option "--squash-compressor"; then