It takes a long time when booting after recovering Linux system from System Recovery Disk (SRD).
Article ID: 100051317
Updated On:
Description
Error Message
There are 90 second wait times on boot. (See Figure 1)
Figure 1
Cause
This issue may occur when the swap partition does not exist on LVM but it exists on the independent partition (like /dev/sda3). When newly creating the swap partition while recovering the system from SRD, UUID for the swap partition is newly generated.
When the new and old UUIDs for swap partition are inconsistent, it takes a long time when booting from the recovered system.
Resolution
1. Run "lsblk -f" and confirm the current UUID for the swap partition.
[root@localhost ~]# lsblk -f
NAME FSTYPE LABEL UUID MOUNTPOINT
sda
├─sda1 vfat F0D5-7242 /boot/efi
├─sda2 xfs 87f42fe2-8654-4b40-9662-3d5e2c8b5200 /boot
├─sda3 swap 5ab3a0a2-16ce-42f5-966d-0e52b4a951ec [SWAP]
└─sda4 LVM2_member FpcqfH-jSwX-5XO9-O1aQ-2Irz-dpuo-9R4Qxl
└─rhel-root xfs 14c12651-52b1-48b3-820c-cd866d2e6e22 /
sr0 iso9660 CDROM 2021-09-01-01-09-44-00 /run/media/ueda/CDROM
2. Open a file /etc/default/grub by an Editor, and find "resume=UUID=", and replace the old UUID with the current UUID that is confirmed in Step 1.
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
GRUB_DEFAULT=saved
GRUB_DISABLE_SUBMENU=true
GRUB_TERMINAL_OUTPUT="console"
GRUB_CMDLINE_LINUX="crashkernel=auto resume=UUID=4fb0b374-343d-408b-aaab-889902885bca rd.lvm.lv=rhel/root rhgb quiet"
GRUB_DISABLE_RECOVERY="true"
GRUB_ENABLE_BLSCFG=true
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
GRUB_DEFAULT=saved
GRUB_DISABLE_SUBMENU=true
GRUB_TERMINAL_OUTPUT="console"
GRUB_CMDLINE_LINUX="crashkernel=auto resume=UUID=5ab3a0a2-16ce-42f5-966d-0e52b4a951ec rd.lvm.lv=rhel/root rhgb quiet"
GRUB_DISABLE_RECOVERY="true"
GRUB_ENABLE_BLSCFG=true
3. Run "grub2-mkconfig -o /boot/grub2/grub.cfg"
4. Reboot.
Issue/Introduction
