Issue
I'm trying to update a server using yum update. However, this error pops up:
==============================================================================================================================================================================================================================================
Package Arch Version Repository Size
==============================================================================================================================================================================================================================================
Installing:
kernel x86_64 2.6.32-573.22.1.el6 updates 30 M
Removing:
kernel x86_64 2.6.32-220.el6 @anaconda-RedHatEnterpriseLinux-201111171049.x86_64/6.2 112 M
Updating for dependencies:
kernel-firmware noarch 2.6.32-573.22.1.el6 updates 18 M
Transaction Summary
==============================================================================================================================================================================================================================================
Install 1 Package(s)
Upgrade 1 Package(s)
Remove 1 Package(s)
Total size: 48 M
Is this ok [y/N]: y
Downloading Packages:
Running rpm_check_debug
ERROR with rpm_check_debug vs depsolve:
kernel(iscsi_add_session) = 0xec873e61 is needed by (installed) kmod-qlgc-qla4xxx-5.02.15.01.05.06-1.el6.x86_64
kernel(iscsi_alloc_session) = 0x0c0f1826 is needed by (installed) kmod-qlgc-qla4xxx-5.02.15.01.05.06-1.el6.x86_64
kernel(iscsi_block_session) = 0xe602f69c is needed by (installed) kmod-qlgc-qla4xxx-5.02.15.01.05.06-1.el6.x86_64
kernel(iscsi_create_conn) = 0x6ba1339a is needed by (installed) kmod-qlgc-qla4xxx-5.02.15.01.05.06-1.el6.x86_64
kernel(iscsi_free_session) = 0xcf334a45 is needed by (installed) kmod-qlgc-qla4xxx-5.02.15.01.05.06-1.el6.x86_64
kernel(iscsi_register_transport) = 0x432a50aa is needed by (installed) kmod-qlgc-qla4xxx-5.02.15.01.05.06-1.el6.x86_64
kernel(iscsi_remove_session) = 0x503c7600 is needed by (installed) kmod-qlgc-qla4xxx-5.02.15.01.05.06-1.el6.x86_64
kernel(iscsi_scan_finished) = 0x3f0b3981 is needed by (installed) kmod-qlgc-qla4xxx-5.02.15.01.05.06-1.el6.x86_64
kernel(iscsi_session_chkready) = 0x56d25a63 is needed by (installed) kmod-qlgc-qla4xxx-5.02.15.01.05.06-1.el6.x86_64
kernel(iscsi_session_event) = 0x4e05d68f is needed by (installed) kmod-qlgc-qla4xxx-5.02.15.01.05.06-1.el6.x86_64
kernel(iscsi_unblock_session) = 0x21fe1275 is needed by (installed) kmod-qlgc-qla4xxx-5.02.15.01.05.06-1.el6.x86_64
kernel(iscsi_unregister_transport) = 0xfd06472f is needed by (installed) kmod-qlgc-qla4xxx-5.02.15.01.05.06-1.el6.x86_64
** Found 12 pre-existing rpmdb problem(s), 'yum check' output follows:
kmod-qlgc-qla4xxx-5.02.15.01.05.06-1.el6.x86_64 has missing requires of kernel(iscsi_add_session) = ('0', '0xec873e61', None)
kmod-qlgc-qla4xxx-5.02.15.01.05.06-1.el6.x86_64 has missing requires of kernel(iscsi_alloc_session) = ('0', '0x0c0f1826', None)
kmod-qlgc-qla4xxx-5.02.15.01.05.06-1.el6.x86_64 has missing requires of kernel(iscsi_block_session) = ('0', '0xe602f69c', None)
kmod-qlgc-qla4xxx-5.02.15.01.05.06-1.el6.x86_64 has missing requires of kernel(iscsi_create_conn) = ('0', '0x6ba1339a', None)
kmod-qlgc-qla4xxx-5.02.15.01.05.06-1.el6.x86_64 has missing requires of kernel(iscsi_free_session) = ('0', '0xcf334a45', None)
kmod-qlgc-qla4xxx-5.02.15.01.05.06-1.el6.x86_64 has missing requires of kernel(iscsi_register_transport) = ('0', '0x432a50aa', None)
kmod-qlgc-qla4xxx-5.02.15.01.05.06-1.el6.x86_64 has missing requires of kernel(iscsi_remove_session) = ('0', '0x503c7600', None)
kmod-qlgc-qla4xxx-5.02.15.01.05.06-1.el6.x86_64 has missing requires of kernel(iscsi_scan_finished) = ('0', '0x3f0b3981', None)
kmod-qlgc-qla4xxx-5.02.15.01.05.06-1.el6.x86_64 has missing requires of kernel(iscsi_session_chkready) = ('0', '0x56d25a63', None)
kmod-qlgc-qla4xxx-5.02.15.01.05.06-1.el6.x86_64 has missing requires of kernel(iscsi_session_event) = ('0', '0x4e05d68f', None)
kmod-qlgc-qla4xxx-5.02.15.01.05.06-1.el6.x86_64 has missing requires of kernel(iscsi_unblock_session) = ('0', '0x21fe1275', None)
kmod-qlgc-qla4xxx-5.02.15.01.05.06-1.el6.x86_64 has missing requires of kernel(iscsi_unregister_transport) = ('0', '0xfd06472f', None)
This is the output of yum install kernel since it seems like it's saying that kmod requires some kernel version.
OS: Centos 2.6.32-504.8.1.el6.x86_64
Solution
FIXED:
The problem was that kmod required an older kernel. Installing the new kernel would have removed the old one so kmod would complain. Installing the new kmod would require the new kernel so it becomes a cyclic dependency.
The fix was simply going into yum.conf and changing the amount of saved kernel versions so that it can save one more kernel version. I updated the kernel and since I could keep another version, the error did not pop up. Then I updated kmod right after. I haven't decided to delete the older kernel yet but I'm sure that if I decided to, it would be okay.
Answered By - V. Zed Answer Checked By - Candace Johnson (WPSolving Volunteer)