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Operating Systems Solaris Understanding ZFS Snapshots - why will it utilize space ? Post 303013443 by javanoob on Wednesday 21st of February 2018 11:58:55 AM
Old 02-21-2018
Hi Peasant,

Thanks for your reply.
Can I look at it this way ->

1) When file1 is deleted, there is actually no change done; just that snap1 and snap2 will still need to refer to this deleted file; hence USED for snap1 and snap2 remain the same, and USSSNAP will reflect 100M (because that the filesize of file1)

2) when snap1 is deleted, the only snap that still needs to refer to "deleted file1" is snap2. hence, snap2 is "holding on/USED" to 100M of the zpool and if snap2 is deleted, file1's space is 100% freed

am I right ?
 

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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)
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