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Bug ID 6574993
Synopsis zfs_mountroot() may need to call clkset() to set the boot_time kstat
State 10-Fix Delivered (Fix available in build)
Category:Subcategory kernel:zfs
Keywords root | zfs | zfs-boot
Responsible Engineer Eric Taylor
Reported Against
Duplicate Of
Introduced In solaris_nevada
Commit to Fix snv_88
Fixed In snv_88
Release Fixed solaris_nevada(snv_88) , solaris_10u6(s10u6_03) (Bug ID:2161980)
Related Bugs 6338653
Submit Date 28-June-2007
Last Update Date 23-April-2008
Description 
The boot_time kstat doesn't get set with zfs root'd boxes:
haiiro:~ $ df -h /
Filesystem             size   used  avail capacity  Mounted on
tank/rootfs-nv_64       12G   6.1G   1.4G    82%    /
haiiro:~ $ 
haiiro:~ $ kstat -m unix -n system_misc -s boot_time
module: unix                            instance: 0     
name:   system_misc                     class:    misc
        boot_time                       0

  ufs_mountroot() calls clkset() to set it.
  the various nfsX_mountroot() also call clkset as does hsfs_mountroot()

  The boot_time kstat is used in:
SMF:
http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/svc/startd/log.c#560
http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/cmd/rpcsvc/rstat_proc.c#722

and in brandz:
http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/uts/common/brand/lx/procfs/lx_prvnops.c#1663
Work Around 
N/A
Comments 
N/A