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System will panic after encapsulation of the boot disk with error "NOTICE: VxVM vxio V-5-0-74 Cannot open disk ROOTDISK: kernel error 6"
Article: 100017606
Last Published: 2013-06-07
Ratings: 0 0
Product(s): InfoScale & Storage Foundation
Problem
System will panic after encapsulation of the boot disk with error
NOTICE: VxVM vxio V-5-0-74 Cannot open disk ROOTDISK: kernel error 6
Cannot open mirrored root device, error 6
Cannot remount root on /pseudo/vxio@0:0 fstype ufs
Error Message
NOTICE: VxVM vxio V-5-0-74 Cannot open disk ROOTDISK: kernel error 6
Cannot open mirrored root device, error 6
Cannot remount root on /pseudo/vxio@0:0 fstype ufs
panic[cpu0]/thread=180e000: vfs_mountroot: cannot remount root
000000000180b950 genunix:vfs_mountroot+380 (21, 2000, 18d21d0, 18aedf8, 18a9800, 18a9a80)
%l0-3: 0000000000000001 0000000000008025 00000600530b2080 000000000127b800
%l4-7: 00000000018a9838 00000600530b2080 00000000018d21d0 0000000000002021
000000000180ba10 genunix:main+9c (0, 180c000, 185ed90, 182b768, 1831b48, 18f3800)
%l0-3: 000000000180c000 000000000180c000 0000000070002000 0000000000000000
%l4-7: 0000000001866400 0000000000000000 000000000180c000 0000000000000001
syncing file systems... done
Cannot open mirrored root device, error 6
Cannot remount root on /pseudo/vxio@0:0 fstype ufs
panic[cpu0]/thread=180e000: vfs_mountroot: cannot remount root
000000000180b950 genunix:vfs_mountroot+380 (21, 2000, 18d21d0, 18aedf8, 18a9800, 18a9a80)
%l0-3: 0000000000000001 0000000000008025 00000600530b2080 000000000127b800
%l4-7: 00000000018a9838 00000600530b2080 00000000018d21d0 0000000000002021
000000000180ba10 genunix:main+9c (0, 180c000, 185ed90, 182b768, 1831b48, 18f3800)
%l0-3: 000000000180c000 000000000180c000 0000000070002000 0000000000000000
%l4-7: 0000000001866400 0000000000000000 000000000180c000 0000000000000001
syncing file systems... done
Solution
MPXIO in Solaris 10 allow the multipathing to the disk and have same function as Veritas Vxdmp. When the below
dmp_tpd_root_device="/pseudo/vxio@0:0";
was added to /kernel/drv/vxdmp.conf , the system reboot with MPXIO enable on the boot disk, vxvm can not find the boot device on the 2nd boot and hence it panic. No core file will be collected because root was not mounted.
Comment out or delete the above line in /kernel/drv/vxdmp.conf will allow the system boot up normally
# dmp_tpd_root_device="/pseudo/vxio@0:0"; <=== comment out this entry.
Applies To
Storage Foundation Version 5.x, 4.x on Solaris 10, 9, 8