Annotation of wikisrc/guide/upgrading.mdwn, revision 1.1
1.1 ! jdf 1: # Upgrading NetBSD
! 3: This chapter describes the binary upgrade of a NetBSD system. There are a
! 4: variety of alternatives to perform this procedure, and the following sections
! 5: will guide you through them.
! 7: ## Using sysinst
! 9: ### Overview
! 11: To do the upgrade, you must have some form of bootable media (CD-ROM, USB
! 12: drive, network, etc.) available and at least the base and kern distribution
! 13: sets. Since files already installed on the system are overwritten in place,
! 14: you only need additional free space for files which weren't previously
! 15: installed or to account for growth of the sets between releases. Usually this
! 16: is not more than a few megabytes.
! 18: ### Note
! 20: Since upgrading involves replacing the kernel, boot blocks, and most of the
! 21: system binaries, it has the potential to cause data loss. Before beginning,
! 22: you are strongly advised to back up any important data on the NetBSD partition
! 23: or on any other partitions on your disk, most importantly `/etc`.
! 25: The upgrade procedure is similar to an installation, but without the hard disk
! 26: partitioning. sysinst will attempt to merge the settings stored in your `/etc`
! 27: directory with the new version of NetBSD. Also, file systems are checked
! 28: before unpacking the sets. Fetching the binary sets is done in the same manner
! 29: as in the installation procedure.
! 31: ### The INSTALL document
! 33: Before doing an upgrade it is essential to read the release information and
! 34: upgrading notes in one of the `INSTALL` files: this is the official
! 35: description of the upgrade procedure, with platform specific information and
! 36: important details. It can be found in the root directory of the NetBSD release
! 37: (on the install CD or on the FTP server).
! 39: It is advisable to print the INSTALL document out. It is available in four
! 40: formats: `.txt`, `.ps`, `.more`, and `.html`.
! 42: ### Performing the upgrade
! 44: The following section provides an overview of the binary upgrade process. Most
! 45: of the following sysinst dialogs are similar to those of the installation
! 46: process. More verbose descriptions and explanations of the dialogs are
! 47: available in [[Example installation|guide/exinst]].
! 49: After selecting the installation language and the keyboard type, the main menu
! 50: appears. Choosing option `b: Upgrade NetBSD on a hard disk` will start the the
! 51: upgrade process.
! 53: ![Starting the upgrade](../install-5.0/up-main.png)
! 55: This dialog will request permission to continue with the upgrade. At this point
! 56: nothing has been changed yet and the upgrade can still be cancelled. This is a
! 57: good time to ask yourself whether you have made a backup, and if you know for
! 58: certain that you will be able to restore from it.
! 60: ![Continuing the upgrade](../install-5.0/up-confirm.png)
! 62: After choosing to continue with `Yes`, the next dialog will ask you to specify
! 63: the hard disk with the NetBSD system that shall be upgraded. If more than one
! 64: disk is available a list of the disks will be displayed.
! 66: ![Choosing the hard drive](../install-5.0/up-select-disc.png)
! 68: The system used for the example has only one hard disk available: `wd0`.
! 70: The following dialog provides a menu to choose the installation type. The
! 71: choices are `Full installation`, `Minimal installation`, or `Custom
! 72: installation`.
! 74: ![Choosing the distribution filesets](../install-5.0/inst-install-type.png)
! 76: At this point, sysinst will perform a check of the file system to ensure its
! 77: integrity.
! 79: ![File system check](../install-5.0/up-fsck.png)
! 81: The next step is to choose which type of bootblocks to install.
! 83: ![Choosing bootblocks](../install-5.0/inst-bootblocks.png)
! 85: The next dialog will ask how much information should be displayed during the
! 86: extraction of the distribution sets.
! 88: ![Upgrade process - verbosity level](../install-5.0/inst-verbosity.png)
! 90: The following dialog asks for the install method of choice and provides a list
! 91: of possible options. The install medium contains the new NetBSD distribution
! 92: sets. You will be prompted for different information depending on which option
! 93: you choose. For example, a CD-ROM or DVD install requires you to specify which
! 94: device to use and which directory the sets are in, while an FTP install
! 95: requires you to configure your network and specify the hostname of an FTP
! 96: server. More details can be found in
! 97: [[Choosing the installation media|guide/exinst#choosing_the_installation_media]].
! 99: ![Install medium](../install-5.0/inst-medium.png)
! 101: sysinst will now unpack the distribution sets, replacing your old binaries.
! 102: After unpacking these sets, it runs the postinstall script to clean up various
! 103: things. If no problems occur, you are done. If postinstall produces errors, you
! 104: will have to manually resolve the issues it brings up. See postinstall's man
! 105: page for more information. You should also read the remarks in `INSTALL` about
! 106: upgrading, as specific compatibility issues are documented there.
! 108: ![Upgrade complete](../install-5.0/up-complete.png)
! 110: When you are back at the main menu, remove the boot medium (if applicable) and
! 111: reboot. Have fun with your new version of NetBSD!
! 113: ## Using sysupgrade
! 115: The sysupgrade utility (currently found in `pkgsrc/sysutils/sysupgrade`) allows
! 116: you to upgrade a running system to a newer binary release.
! 118: ### Note
! 120: Please be aware that, as of August 2012, sysupgrade is a farily new tool and is
! 121: still undergoing field testing. Use with care. In particular, upgrades across
! 122: major binary releases might not work properly yet because of the lack of a
! 123: reboot between the kernel installation and the unpacking of the sets. That said,
! 124: you may find this tool very convenient to track NetBSD-current or stable NetBSD
! 125: branches.
! 127: One of the benefits of sysupgrade is that it is an integrated and
! 128: almost-unattended solution: the tool fetches the new kernel and distribution
! 129: sets from remote sites if you desire and performs the upgrade without user
! 130: intervention until new changes to the configuration files need to be merged.
! 132: Let's assume you are running NetBSD/amd64 6.0 and you wish to upgrade to NetBSD
! 133: 6.1. The procedure to do so would be to run the following command:
! 135: # sysupgrade auto ftp://ftp.NetBSD.org/pub/NetBSD/NetBSD-6.1/amd64
! 138: And that's all that it takes. This will proceed to download the kernel and
! 139: sets appropriate for your machine, unpack them and assist you in merging new
! 140: configuration changes. Do not forget to reboot afterwards.
! 142: For more details, please see the included sysupgrade(8) manual page and the
! 143: `/usr/pkg/etc/sysupgrade.conf` configuration file.
CVSweb for NetBSD wikisrc <wikimaster@NetBSD.org> software: FreeBSD-CVSweb