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After an installation of SUSE Linux Enterprise Server 15 SP5 on a hardware iSCSI boot-from-SAN configuration, the installation may fail to boot, halting on the SUSE loading screen and IO errors will be displayed on the console. Subsequent reboots will not recover the system. To recover the system, the iscsiuio, iscsid, and iscsi system services must be enabled through OS rescue mode.Alternatively, the issue can be avoided by using a scripted install that enables the iscsiuio, iscsid, and iscsi services during installation.
Any HPE Synergy Gen10, HPE Synergy Gen10 Plus, or HPE Synergy Gen11 compute module with hardware iSCSI boot-from-SAN in SUSE Linux Enterprise Server 15 SP5 using the HPE Synergy 6820C 25/50Gb Converged Network Adapter, HPE Synergy 4820C 10/20/25Gb Converged Network Adapter, or HPE Synergy 3820C 10/20Gb Converged Network Adapter.This occurs intermittently depending on the timing of SUSE Linux Enterprise Server 15 SP5 enabling iSCSI connections during the boot process.
To resolve this issue, update to SUSE Linux Enterprise Server 15 SP6.To avoid this issue or to recover after the issue has occurred, enable iscsiuio, iscsid, and iscsi services with systemd.The commands are as follows:Systemctl enable iscsiuioSystemctl enable iscsidSystemctl enable iscsiIf able to boot to the OS, run the above commands at the command line interface (CLI).If performing a new installation, an autoyast scripted installation can enable these during the installation. Refer to the latest SUSE Linux Enterprise Server user documentation for full instructions on autoyast. For the three iscsi services, that will be similar to the following:<services-manager> <default_target>multi-user</default_target> <services> <enable config:type="list"> <service>iscsiuio</service> </enable> <enable config:type="list"> <service>sscsid</service> </enable> <enable config:type="list"> <service>sscsi</service> </enable> </services> </services-manager>If the system is already installed and cannot be booted to the OS, then boot to emergency or rescue mode and manually mount the filesystem to edit the configuration files. One method is described below.Booted install mediaSelected “more..”Selected “rescue”Enter the following commandsSystemctl start iscsiuioSystemctl start iscsidSystemctl start iscsio For multipath systems systemctl start multipathd Mount dm-2 (or the root filesystem for the system) Mount /dev/dm-2 /mnto For Single path systems Mount /dev/sda2 /mntoFor multipath – systemctl start multipathdMount dm-2 (or what is the root filesystem for the users system)Mount /dev/dm-2 /mntMount --rbind /proc /mnt/procMount --rbind /sys /mnt/sysMount --rbind /dev /mnt/devChroot /mntMount -aSystemctl enable iscsiuioSystemctl enable iscsidSystemctl enable iscsiexit (to exit from chroot)Systemctl rebootDocument VersionRelease DateDetails3October 22, 2025Added fix, SUSE Linux Enterprise Server 15 SP62August 7, 2024Added HPE Synergy 3820C 10/20Gb Converged Network Adapter as affected1August 7, 2023Original document release
Operating Systems Affected:SUSE Linux Enterprise Server 15
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