I understand snapshot works on copy on write mechanism, so if there isn't any changes, there wouldn't be extra space taken.
q1) Why is it that when file1 is deleted, both snap1 and snap2 isn't utilizing any space ?
Code:
bleonard@os200906:~# rm /tank/file1
bleonard@os200906:~# zpool scrub tank
bleonard@os200906:~# zfs list -t all -r tank
NAME USED AVAIL REFER MOUNTPOINT
tank 200M 784M 100M /tank
tank@snap1 17K - 100M -
tank@snap2 17K - 200M -
Yet when using zfs list as below, it is showing that 100M is use by snapshot (USEDSNAP - 100M)
Code:
bleonard@os200906:~# zfs list -t all -o space -r tank
NAME AVAIL USED USEDSNAP USEDDS USEDREFRESERV USEDCHILD
tank 784M 200M 100M 100M 0 154K
So when file1 is deleted, snap1 and snap2 is not utilizing any space but 100M is used by snapshots ?...
==============
q2) However, when snap1 is deleted, snap2 will show that it is using 100M of space.. why so ?
Code:
bleonard@os200906:~# zfs destroy tank@snap1
bleonard@os200906:~# zfs list -t all -r tank
NAME USED AVAIL REFER MOUNTPOINT
tank 200M 784M 100M /tank
tank@snap2 100M - 200M -
I have 2 hard disks ,one hard disk(40gb) completely for windows Os,and the other(120gb) for solaris Os.
In the second hard disk.I have utilised around 10gb for the solaris installation and also partitioned with the available 10gb space for the solaris x86 OS.
Now i need to utilise the... (8 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)
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)
Discussion started by: AndyG
4 Replies
LEARN ABOUT PLAN9
install-solaris
install-solaris(1M)install-solaris(1M)NAME
install-solaris - install the Solaris operating system
SYNOPSIS
install-solaris
install-solaris invokes the Solaris Install program. Depending on graphical capability and available memory at the time of invocation,
install-solaris invokes either a text-based installer or a graphical installer.
The following minimum requirements for physical memory dictate which features are available during installation:
For SPARC machines:
128 MB
Minimum physical memory for all installation types
128 MB
Minimum physical memory required for windowing system
384 MB
Minimum physical memory required for graphical-based installation
For x86 machines:
256 MB
Minimum physical memory for all installation types
256 MB
Minimum physical memory required for windowing system
512 MB
Minimum physical memory required for graphical-based installation
In some cases, even if the minimum physical memory is present, available virtual memory after system startup can limit the number of fea-
tures available.
install-solaris exists only on the Solaris installation media (CD or DVD) and should be invoked only from there. Refer to the for more
details.
install-solaris allows installation of the operating system onto any standalone system. install-solaris loads the software available on the
installation media. Refer to the for disk space requirements.
Refer to the for more information on the various menus and selections.
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcdrom (Solaris instal- |
| |lation media) |
+-----------------------------+-----------------------------+
|Interface Stability |Evolving |
+-----------------------------+-----------------------------+
pkginfo(1), install(1M), pkgadd(1M), attributes(5)
It is advisable to exit install-solaris by means of the exit options in the install-solaris menus.
23 Sep 2005 install-solaris(1M)
02-20-2018
