VirtualBox Rollback

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1. SuSE

Help with RollBack options

Hi, Recently we have patched our server to the highest level after which our application running on that server is having an issue with ssl handshake as below between 2 hosts. same error is also generated when checked from other host. Invalid/unknown SSL header was received from peer remote...

2. Virtualization and Cloud Computing

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I want to change my virtual box disk to immutable. When I try to do that I get the following error. Error changing medium type from Normal to Immutable. Cannot change the type of medium '/root/VirtualBox VMs/fedora13/fedora13.vmdk' because it is attached to 1 virtual machines Please help me...

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4. Solaris

zfs rollback

i created a snapshot as follow as bash-3.00# zfs snapshot dinu/dinu1@dinusnap1 then i deleted the contents in the directory dinu1 now i want to rollback that contents from snapshot and i used bash-3.00# zfs rollback dinu/dinu1/@dinusnap1 but i received error as follow as cannot...

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/var/log/wtmp SuSE log permission rollback

Hello All, On my SuSE system, I have wtmp log this log file permission is 644 but every reboot the file permission rollback to 664. In the logrotate.conf and logrotate.d/wtmp files the wtmp logrotate set to 644. I would like to know, which "file" or "script" modify the wtmp log to rollback to...

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NetBSD on VirtualBox

Hello, guys! I use Ubuntu 9.04 as desktop operating system and I want to make some tests on NetBSD. I tried to install as a virtual sistem on VirtualBox but it doesn't want to install. You can see the error in the attached file. Do you guys have any clue about what the problem could be?

7. Solaris

OpenSolaris on VirtualBox

I've just installed VirtualBox on my PC and installed OpenSolaris as a virtual machine within it. The PC connects to the internet via a router and uses DHCP to get its IP address. How do I configure the OpenSolaris virtual machine to use the same DHCP server so I can connect it to the net. At the...

8. UNIX for Dummies Questions & Answers

RPM Package - Rollback

Is it possible to rollback a package in Redhat ?I don't want to delete any packages. I have upgraded a package using rpm -Uvh & now i decided to use the old package, is it possible to revert it back to the original package ?

9. Post Here to Contact Site Administrators and Moderators

Have we just had a rollback of a few hours?

LEARN ABOUT FREEBSD

zfsboot

ZFSBOOT(8)						    BSD System Manager's Manual 						ZFSBOOT(8)

NAME

     zfsboot -- bootcode for ZFS on BIOS-based computers

DESCRIPTION

     zfsboot is used on BIOS-based computers to boot from a filesystem in a ZFS pool.  zfsboot is installed in two parts on a disk or a partition
     used by a ZFS pool.  The first part, a single-sector starter boot block, is installed at the beginning of the disk or partition.  The second
     part, a main boot block, is installed at a special offset within the disk or partition.  Both areas are reserved by the ZFS on-disk specifi-
     cation for boot use.  If zfsboot is installed in a partition, then that partition should be made bootable using appropriate configuration and
     boot blocks described in boot(8).

BOOTING

     The zfsboot boot process is very similar to that of gptzfsboot(8).  One significant difference is that zfsboot does not currently support the
     GPT partitioning scheme.  Thus only whole disks and MBR partitions, traditionally referred to as slices, are probed for ZFS disk labels.  See
     the BUGS section in gptzfsboot(8) for some limitations of the MBR scheme support.

USAGE

     zfsboot supports all the same prompt and configuration file arguments as gptzfsboot(8).

FILES

     /boot/zfsboot  boot code binary
     /boot.config   parameters for the boot block (optional)
     /boot/config   alternative parameters for the boot block (optional)

EXAMPLES

     zfsboot is typically installed using dd(1).  To install zfsboot on the ada0 drive:

	   dd if=/boot/zfsboot of=/dev/ada0 count=1
	   dd if=/boot/zfsboot of=/dev/ada0 iseek=1 oseek=1024

     If the drive is currently in use, the GEOM safety will prevent writes and must be disabled before running the above commands:

	   sysctl kern.geom.debugflags=0x10

     zfsboot can also be installed in an MBR slice:

	   gpart create -s mbr ada0
	   gpart add -t freebsd ada0
	   gpart create -s BSD ada0s1
	   gpart bootcode -b /boot/boot0 ada0
	   gpart set -a active -i 1 ada0
	   dd if=/boot/zfsboot of=/dev/ada0s1 count=1
	   dd if=/boot/zfsboot of=/dev/ada0s1 iseek=1 oseek=1024

     Note that commands to create and populate a pool are not shown in the example above.

SEE ALSO

     dd(1), boot.config(5), boot(8), gptzfsboot(8), loader(8), zfsloader(8), zpool(8)

HISTORY

     zfsboot appeared in FreeBSD 7.3.

AUTHORS

     This manual page was written by Andriy Gapon <avg@FreeBSD.org>.

BUGS

     Installing zfsboot with dd(1) is a hack.  ZFS needs a command to properly install zfsboot onto a ZFS-controlled disk or partition.

BSD
								September 15, 2014							       BSD

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