One of the most appealing features ZFS offers is built in compression capabilities. The tradeoffs are self evident, consume additional CPU but conserve disk space. If your running an OLTP database then compression probly isn't for you, however if you are doing bulk data archiving this could be a huge win.
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)
I'am looking for script (or tool) that would compress all files with given extension in all subdirectory. Important part is that every one file have to end in separate archive whit it's own name.
Eaven if I could point multiple file in one directory and compress them it would be ok.
I' am... (1 Reply)
Hello everyone
I want to use compression in my tape when I backup some file. For example I have several files that use 50gb. If I backup this I need to use two cartridge because without compression I can backup 36gb.
My question is with flag I need to use to compress and I can use 72gb in... (2 Replies)
Hi all,
I am working on a project based on ZFS. The aim of this project is to read the raw data on disk for data recovery purpose. I started by reading the ZFS documentation of Sun Solaris. I somehow reached UBERBLOCK array of first partiton, and now as given in the document I am reading the... (7 Replies)
Hi all,
I am having few files which needs to be concted into a single file and then it is compressed and FTPed from the UNIX server to the Windows server.
For the above purpose i am using gzip command to compress the files after concetenation.
And i am FTP ing the compressed file in the... (3 Replies)
Hi Folks,
As I am familiar wih both types compresion forms: gun-zip and .rpm. My questions is how do I uncompress gunz.zip type? As the .rpm I can double click and it will extract...Can someone shed some light on this and thank you...
M (2 Replies)
Hello,
I have a .z file which i understand to be UNIX.
I'm on PC (no UNIX boxes) and have tried many different unzipping programs to extract this .z file, but only PicoZip has allowed me to view what is inside (telling me, i think, that it's not corrupt), but i have not been able to extract... (3 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)