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ZFS: Reserve Space for Filesystem (tech-recipes)

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Operating Systems Solaris Solaris BigAdmin RSS ZFS: Reserve Space for Filesystem (tech-recipes)
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Old 09-30-2008
ZFS: Reserve Space for Filesystem (tech-recipes)
Descendent (child) filesystems in ZFS take on the carachteristics of the parent filesystem (compression, quotas, and available disk space). The pool concept in ZFS is fitting - a hard drive (or several) becomes a pool. We no longer have to define the exact size of a filesystem when we create it. Each filesystem has access to the same pool of space. However, if is simple to reserve a minimum amount of space for a filesystem and its decendents.

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LEARN ABOUT BSD

quotaon

QUOTAON(8)						      System Manager's Manual							QUOTAON(8)

NAME

       quotaon, quotaoff - turn filesystem quotas on and off

SYNOPSIS

       quotaon [-v] filesystem ...
       quotaon [-v] -a
       quotaoff [-v] filesystem ...
       quotaoff [-v] -a

DESCRIPTION

       Quotaon	announces  to the system that disk quotas should be enabled on one or more filesystems.  Quotaoff announces to the system that the
       specified filesystems should have any disk quotas diskquotas turned off.  The filesystems specified must have entries in /etc/fstab and	be
       mounted.   Quotaon  expects  each  filesystem  to  have a quota file named quotas located at the root of the associated file system.  These
       defaults may be overridden in /etc/fstab.

       Available options:

       -a	      If the -a flag is supplied in place of any filesystem names, quotaon/quotaoff will enable/disable all the filesystems  indi-
		      cated in /etc/fstab to be read-write with disk quotas.

       -v	      Causes quotaon and quotaoff to print a message for each filesystem where quotas are turned on or off.

FILES

       quotas	      at the filesystem root with user quotas

       /etc/fstab     filesystem table

SEE ALSO

       quota(1), setquota(2), fstab(5), edquota(8), quotacheck(8), repquota(8)

HISTORY

       The quotaon command appeared in 4.2BSD.

4.2 Berkeley Distribution					 January 21, 1996							QUOTAON(8)