This guide is intended to show a new user the capabilities of the ZFS snapshots feature. It describes the steps necessary to set up a ZFS filesystem and the use of snapshots including how to create them, use them for backup and restore purposes, and how to migrate them between systems. After reading this guide, the user will have a basic understanding of how snapshots can be integrated into system administration procedures.
Hi all,
I am moving to Solaris11 and is trying to understand how ZFS snapshot works.
Chances upon this Oracle Blog and can't wrap my head around it.
https://blogs.oracle.com/solaris/understanding-the-space-used-by-zfs-v2
Hope gurus here can shed some light .
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... (4 Replies)
Hi,
I work as an Oracle Technical consultant (mainly DBA related), and I have used ZFS snapshots on previous projects which has helped me a great deal. I often take snapshots before doing some dev work, and then I can roll it back if I want to start again, or if it goes pear shaped!!
I have... (4 Replies)
I have a question regarding installing recommended patch clusters via ZFS snapshots. Someone wrote a pretty good blog about it here:
Initial Program Load: Live Upgrade to install the recommended patch cluster on a ZFS snapshot
The person's article is similar to what I've done in the past. ... (0 Replies)
I'm trying to find a way to automate cleanup of OCR for a large number of scanned pages - due to limitations of the access mechanism where these are to end up, I need to create pdf files that include the background text for searching.
Going in I have Tif images too dirty to OCR and re-keyed text... (2 Replies)
AMZFS-SENDRECV(8) System Administration Commands AMZFS-SENDRECV(8)NAME
amzfs-sendrecv - Amanda script to create zfs sendrecv
DESCRIPTION
amzfs-sendrecv is an Amanda application implementing the Application API. It should not be run by users directly. It create a zfs snapshot
of the filesystem and backup the snapshot with 'zfs send'. Snapshot are kept after the backup is done, this increase the disk space use on
the client but it is neccesary to be able do to incremental backup. If you want only full backup, you can disable this feature by setting
the KEEP-SNAPSHOT property to 'NO'. Only the restoration of the complete backup is allowed, it is impossible to restore a single file.
The application is run as the amanda user, it must have many zfs priviledge:
zfs allow -ldu AMANDA_USER mount,create,rename,snapshot,destroy,send,receive FILESYSTEM
Some system doesn't have "zfs allow", but you can give the Amanda backup user the rights to manipulate ZFS filesystems by using the
following command:
usermod -P "ZFS File System Management,ZFS Storage Management" AMANDA_USER
This will require that your run zfs under pfexec, set the PFEXEC property to YES.
The format of the diskdevice in the disklist (DLE) must be one of:
Desciption Example
-----------------
Mountpoint /data
ZFS pool name datapool
ZFS filesystem datapool/database
ZFS logical volume datapool/dbvol
The filesystem doesn't need to be mounted.
PROPERTIES
This section lists the properties that control amzfs-sendrecv's functionality. See amanda-applications(7) for information on the
Application API, application configuration.
DF-PATH
Path to the 'df' binary, search in $PATH by default.
KEEP-SNAPSHOT
If "YES" (the default), snapshot are kept after the backup, if set to "NO" then snapshot are no kept and incremental backup will fail.
ZFS-PATH
Path to the 'zfs' binary, search in $PATH by default.
PFEXEC-PATH
Path to the 'pfexec' binary, search in $PATH by default.
PFEXEC
If "NO" (the default), pfexec is not used, if set to "YES" then pfexec is used.
EXAMPLE
In this example, a dumptype is defined to use amzfs-sendrecv application to backup a zfs filesystem.
define application-tool amzfs_sendrecv {
comment "amzfs-sendrecv"
plugin "amzfs-sendrecv"
#property "DF-PATH" "/usr/sbin/df"
#property "KEEP-SNAPSHOT" "YES"
#property "ZFS-PATH" "/usr/sbin/zfs"
#property "PFEXEC-PATH" "/usr/sbin/pfexec"
#property "PFEXEC" "NO"
}
define dumptype user-zfs-sendrecv {
program "APPLICATION"
application "amzfs_sendrecv"
}
SEE ALSO amanda(8), amanda.conf(5), amanda-client.conf(5), amanda-applications(7)
The Amanda Wiki: : http://wiki.zmanda.com/
AUTHOR
Jean-Louis Martineau <martineau@zmanda.com>
Zmanda, Inc. (http://www.zmanda.com)
Amanda 3.3.3 01/10/2013 AMZFS-SENDRECV(8)