I ran into this or something similar. My system would boot fine on
an older kernel but fail on a new oue. Can't remember which one worked
and which didn't. The solution I found was remove the bitmap, re-boot on
the newer kernel, and add the bitmap back.
# remove
mdadm --grow --bitmap=none /dev/md127
# create - but not while resyncing
mdadm --grow --bitmap=internal /dev/md127
HTH,
Bill
On 10/4/2015 1:03 AM, Alex wrote:
HI,
I have a fedora22 system that's been working fine for some time, but
any new kernels fail to boot properly. The system is configured with
/boot and / on RAID1. The rdsosreport.txt that dracut produces shows
no indication of md RAID support in /proc/mdstat and no RAID devices
listed with blkid or in /dev.
I've tried rebuilding the initramfs images manually on the running
system and it still doesn't include RAID support.
What could be causing grub and/or dracut to not detect the RAID
devices or include support for them?
I've included my grub2.cfg and fstab, and fdisk output.
Disk /dev/sda: 232.9 GiB, 250059350016 bytes, 488397168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 76D351F7-9CB4-4F70-A62F-2903227191B3
Device Start End Sectors Size Type
/dev/sda1 2048 1026047 1024000 500M Linux RAID
/dev/sda2 1026048 476162047 475136000 226.6G Linux RAID
/dev/sda3 476162048 484550655 8388608 4G Linux swap
/dev/sda4 484550656 484552703 2048 1M BIOS boot
Disk /dev/sdb: 232.9 GiB, 250059350016 bytes, 488397168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 1861B0D0-EA55-418B-B179-B6BB700EEAC7
Device Start End Sectors Size Type
/dev/sdb1 2048 1026047 1024000 500M Linux RAID
/dev/sdb2 1026048 476162047 475136000 226.6G Linux RAID
/dev/sdb3 476162048 484550655 8388608 4G Linux swap
/dev/sdb4 484550656 484552703 2048 1M BIOS boot
fstab:
UUID=64ce5a40-bd28-460f-965b-ec43fd1eb2f7 / ext4 defaults
1 1
UUID=96187b22-1ad9-4d44-a35a-89b746e270ee /boot ext4
defaults 1 2
/dev/sda3 swap swap
defaults 0 0
/dev/sdb3 swap swap
defaults 0 0
### BEGIN /etc/grub.d/00_header ###
insmod raid
insmod mdraid09
insmod mdraid1x
set pager=1
if [ -s $prefix/grubenv ]; then
load_env
fi
if [ "${next_entry}" ] ; then
set default="${next_entry}"
set next_entry=
save_env next_entry
set boot_once=true
else
set default="0"
fi
if [ x"${feature_menuentry_id}" = xy ]; then
menuentry_id_option="--id"
else
menuentry_id_option=""
fi
export menuentry_id_option
if [ "${prev_saved_entry}" ]; then
set saved_entry="${prev_saved_entry}"
save_env saved_entry
set prev_saved_entry=
save_env prev_saved_entry
set boot_once=true
fi
function savedefault {
if [ -z "${boot_once}" ]; then
saved_entry="${chosen}"
save_env saved_entry
fi
}
function load_video {
if [ x$feature_all_video_module = xy ]; then
insmod all_video
else
insmod efi_gop
insmod efi_uga
insmod ieee1275_fb
insmod vbe
insmod vga
insmod video_bochs
insmod video_cirrus
fi
}
if [ x$feature_default_font_path = xy ] ; then
font=unicode
else
insmod part_gpt
insmod part_gpt
insmod diskfilter
insmod mdraid1x
insmod ext2
set root='mduuid/485085777ca70c519fcb92fd471164a4'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root
--hint='mduuid/485085777ca70c519fcb92fd471164a4'
64ce5a40-bd28-460f-965b-ec43fd1eb2f7
else
search --no-floppy --fs-uuid --set=root 64ce5a40-bd28-460f-965b-ec43fd1eb2f7
fi
font="/usr/share/grub/unicode.pf2"
fi
if loadfont $font ; then
set gfxmode=auto
load_video
insmod gfxterm
set locale_dir=$prefix/locale
set lang=en_US
insmod gettext
fi
terminal_output gfxterm
if [ x$feature_timeout_style = xy ] ; then
set timeout_style=menu
set timeout=5
# Fallback normal timeout code in case the timeout_style feature is
# unavailable.
else
set timeout=5
fi
### END /etc/grub.d/00_header ###
### BEGIN /etc/grub.d/10_linux ###
menuentry 'Fedora 22 (Twenty Two)' --class fedora --class gnu-linux
--class gnu --class os --unrestricted $menuentry_id_option
'gnulinux-simple-64ce5a40-bd28-460f-965b-ec43fd1eb2f7' {
load_video
set gfxpayload=keep
insmod gzio
insmod part_gpt
insmod part_gpt
insmod diskfilter
insmod mdraid1x
insmod ext2
set root='mduuid/7d1bec3121f39ea4c90f78a6083e81e9'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root
--hint='mduuid/7d1bec3121f39ea4c90f78a6083e81e9'
96187b22-1ad9-4d44-a35a-89b746e270ee
else
search --no-floppy --fs-uuid --set=root
96187b22-1ad9-4d44-a35a-89b746e270ee
fi
linux16 /vmlinuz-4.1.8-200.fc22.x86_64
root=UUID=64ce5a40-bd28-460f-965b-ec43fd1eb2f7 ro
initrd16 /initramfs-4.1.8-200.fc22.x86_64.img
}
### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###
### BEGIN /etc/grub.d/41_custom ###
if [ -f ${config_directory}/custom.cfg ]; then
source ${config_directory}/custom.cfg
elif [ -z "${config_directory}" -a -f $prefix/custom.cfg ]; then
source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###
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