Today i learned how to create an alternate boot enviornment for a ZFS installed solaris SPARC machine.
I follwed the below steps:
I follwed the below steps:
Check if any boot enviornments are created already or not 1)bash-3.00# lustatus ERROR: No boot environments are configured on this system ERROR: cannot determine list of all boot environment names
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so here only one boot enviornment is configured,now we can create
one more boot enviornment by 'lucreate' command with the alternate
boot enviornment name as 's10s_u9wos_14a2'(here i have given name to my choice)
2)bash-3.00# lucreate -n s10s_u9wos_14a2
Analyzing system configuration.
No name for current boot environment.
INFORMATION: The current boot environment is not named - assigning name <s10s_u9wos_14a>.
Current boot environment is named <s10s_u9wos_14a>.
Creating initial configuration for primary boot environment <s10s_u9wos_14a>.
The device </dev/dsk/c1t0d0s0> is not a root device for any boot environment; cannot get BE ID.
PBE configuration successful: PBE name <s10s_u9wos_14a> PBE Boot Device </dev/dsk/c1t0d0s0>.
Comparing source boot environment <s10s_u9wos_14a> file systems with the
file system(s) you specified for the new boot environment. Determining
which file systems should be in the new boot environment.
Updating boot environment description database on all BEs.
Updating system configuration files.
Creating configuration for boot environment <s10s_u9wos_14a2>.
Source boot environment is <s10s_u9wos_14a>.
Creating boot environment <s10s_u9wos_14a2>.
Cloning file systems from boot environment <s10s_u9wos_14a> to create boot environment <s10s_u9wos_14a2>.
Creating snapshot for <zpool/ROOT/s10s_u9wos_14a> on <zpool/ROOT/s10s_u9wos_14a@s10s_u9wos_14a2>.
Creating clone for <zpool/ROOT/s10s_u9wos_14a@s10s_u9wos_14a2> on <zpool/ROOT/s10s_u9wos_14a2>.
Setting canmount=noauto for </> in zone <global> on <zpool/ROOT/s10s_u9wos_14a2>.
Creating snapshot for <zpool/ROOT/s10s_u9wos_14a/var> on <zpool/ROOT/s10s_u9wos_14a/var@s10s_u9wos_14a2>.
Creating clone for <zpool/ROOT/s10s_u9wos_14a/var@s10s_u9wos_14a2> on <zpool/ROOT/s10s_u9wos_14a2/var>.
Setting canmount=noauto for </var> in zone <global> on <zpool/ROOT/s10s_u9wos_14a2/var>.
Creating dataset <zpool/ROOT/s10s_u9wos_14a2/zoneds/zonesan-s10s_u9wos_14a2> for zone <zonesan>
Copying root of zone <zonesan>.
Creating snapshot for <zpool/export/home/zonejos> on <zpool/export/home/zonejos@s10s_u9wos_14a2>.
Creating clone for <zpool/export/home/zonejos@s10s_u9wos_14a2> on <zpool/export/home/zonejos-s10s_u9wos_14a2>.
Population of boot environment <s10s_u9wos_14a2> successful.
Creation of boot environment <s10s_u9wos_14a2> successful.
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Check for the new boot enviornment created
3)bash-3.00# lustatus
Boot Environment Is Active Active Can Copy
Name Complete Now On Reboot Delete Status
-------------------------- -------- ------ --------- ------ ----------
s10s_u9wos_14a yes yes yes no -
s10s_u9wos_14a2 yes no no yes -
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4)bash-3.00# zfs list NAME USED AVAIL REFER MOUNTPOINT zpool 22.9G 111G 97K /zpool zpool/ROOT 5.57G 111G 21K legacy zpool/ROOT/s10s_u9wos_14a 5.47G 111G 5.38G / zpool/ROOT/s10s_u9wos_14a@s10s_u9wos_14a2 78.5K - 5.38G - zpool/ROOT/s10s_u9wos_14a/var 93.0M 111G 92.9M /var zpool/ROOT/s10s_u9wos_14a/var@s10s_u9wos_14a2 59K - 92.9M - zpool/ROOT/s10s_u9wos_14a2 104M 111G 5.38G / zpool/ROOT/s10s_u9wos_14a2/var 0 111G 92.9M /var zpool/dump 2.00G 111G 2.00G - zpool/export 201M 111G 23K /export zpool/export/home 201M 111G 104M /export/home zpool/swap 15.1G 126G 16K - -----------------------------------------------------------
if you have created zones the boot enviornment will reflect there also. here i configured a zone 'zonejos' 5)bash-3.00# zfs list NAME USED AVAIL REFER MOUNTPOINT zpool 22.9G 111G 97K /zpool zpool/ROOT 5.57G 111G 21K legacy zpool/ROOT/s10s_u9wos_14a 5.47G 111G 5.38G / zpool/ROOT/s10s_u9wos_14a@s10s_u9wos_14a2 78.5K - 5.38G - zpool/ROOT/s10s_u9wos_14a/var 93.0M 111G 92.9M /var zpool/ROOT/s10s_u9wos_14a/var@s10s_u9wos_14a2 59K - 92.9M - zpool/ROOT/s10s_u9wos_14a2 104M 111G 5.38G / zpool/ROOT/s10s_u9wos_14a2/var 0 111G 92.9M /var zpool/ROOT/s10s_u9wos_14a2/zoneds 103M 111G 23K /zoneds zpool/ROOT/s10s_u9wos_14a2/zoneds/zonesan-s10s_u9wos_14a2 103M 111G 103M /zoneds/zonesan-s10s_u9wos_14a2 zpool/dump 2.00G 111G 2.00G - zpool/export 201M 111G 23K /export zpool/export/home 201M 111G 104M /export/home zpool/export/home/zonejos 97.0M 111G 97.0M /export/home/zonejos zpool/export/home/zonejos@s10s_u9wos_14a2 0 - 97.0M - zpool/export/home/zonejos-s10s_u9wos_14a2 39.5K 111G 97.0M /export/home/zonejos-s10s_u9wos_14a2 zpool/swap 15.1G 126G 16K ----------------------------------------------------------------you can boot from alternate boot envionment using boot -L command from ok> prompt or using luactivate command and its recommended highly not to give reboot commands or shutdoen commands6)bash-3.00# luactivate s10s_u9wos_14a2 A Live Upgrade Sync operation will be performed on startup of boot environment <s10s_u9wos_14a2>.---------------------------------------------------------------{2} ok boot -L Boot device: /pci@9,600000/SUNW,qlc@2/fp@0,0/disk@w500000e0129fa191,0:a File and args: -L 1 s10s_u9wos_14a 2 s10s_u9wos_14a2 Select environment to boot: [ 1 - 2 ]: 2 To boot the selected entry, invoke: boot [<root-device>] -Z zpool/ROOT/s10s_u9wos_14a2 {2} ok boot -Z rpool/ROOT/zfsnv_952BE Resetting ...{2} ok boot -Z zpool/ROOT/s10s_u9wos_14a2 Resetting ... Software Reset Enabling system bus....... Done Initializing CPUs......... Done Initializing boot memory.. Done Initializing OpenBoot Probing system devices Probing I/O buses Sun Fire V490, No Keyboard Copyright 2005 Sun Microsystems, Inc. All rights reserved. OpenBoot 4.18.8, 8192 MB memory installed, Serial #71211080. Ethernet address 0:14:4f:3e:98:48, Host ID: 843e9848. Rebooting with command: boot -Z zpool/ROOT/s10s_u9wos_14a2 Boot device: /pci@9,600000/SUNW,qlc@2/fp@0,0/disk@w500000e0129fa191,0:a File and args: -Z zpool/ROOT/s10s_u9wos_14a2 SunOS Release 5.10 Version Generic_142909-17 64-bit Copyright (c) 1983, 2010, Oracle and/or its affiliates. All rights reserved. Hostname: PTEST231 Reading ZFS config: done. Mounting ZFS filesystems: (19/19) PTEST231 console login:----------------------------------------------------------------------------now the boot environment is the new one created.At times we will get an error that root file system will not get mounted,what i did was:got to single user mode from cdrom{2}ok boot cdrom -snow just try restarting system usin init command(Please don't use reboot or shutdown command)#init 6again if its coming to ok prompt then we have to try another method,1) Boot the machine to Single User mode from solaris dvd{2}ok boot cdrom -s----------------------------------------------------------------------Now mount / directory (from current boot environment) on to a new directory,say /mnt after that run command 'luactivate' which activte earlier boot enviornment2) #zpool import zpool3) #zfs get mountpoint zpool/ROOT/s10s_u9wos_14a4) #zfs get mounted zpool/ROOT/s10s_u9wos_14a5) #zfs set mountpoint=/mnt zpool/ROOT/s10s_u9wos_14a6) #zfs mount zpool/ROOT/s10s_u9wos_14a (name of my pool is 'zpool' and don't get confused)7) #/mnt/sbin/luactivate8) #init 6it will be successful
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