[FUG-BR] Freebsd+Storage

[William David FUG-BR]

Este commit foi efetuado  recentemente
Ótimo avanço nas novidades com o ZFS , é uma pena não termos ainda
liberado o CIFS utilizado pela Sun, para utilização em conjunto com o
ZFS.

Só para que todos saibam as novidades de cada versão do sistema a
partir da 6 que era a utilizada no FreeBSD:

para quem queira saber mais sobre as versões do ZFS visite
http://opensolaris.org/os/community/zfs/version/XX/  trocando o XX
pelos num de 0 a 14 ( atual versão )

ZFS Pool Version 6
This page describes the feature available with version 6 of the ZFS
on-disk format. This version includes support for the following
feature:
    * 'bootfs' pool property
This feature is available in:
    * Solaris Express Community Edition, build 62
    * Solaris 10 10/08 release
The related bugs for version 6 changes are as follows:
    * 4929890 ZFS Boot support for the x86 platform
    * 6479807 pools need properties


ZFS Pool Version 7
This page describes the features available with version 7 of the ZFS
on-disk format. This version includes support for the following
feature:
The ZFS Intent Log (ZIL) satisfies the need of some applications to
know the data they changed is on stable storage on return from a
system call. The Intent Log holds records of those system calls and
they are replayed if the system power fails or panics if they have not
been committed to the main pool. When the Intent Log is allocated from
the main pool, it allocates blocks that chain through the pool. This
version adds the capability to specify a separate Intent Log device or
devices.
This feature is available in:
    * Solaris Express Community Edition, build 68
    * Solaris 10 10/08 release
The related bug for the version 7 change is:
    * 6339640 Make ZIL use NVRAM when available.


ZFS Pool Version 8
This page describes the features available with version 8 of the ZFS
on-disk format. This version now supports the ability to delegate
zfs(1M) administrative tasks to ordinary users.
This feature is available in:
    * Solaris Express Community Edition, build 69
    * Solaris 10 10/08 release
The related bug for the version 8 change is:
    * 6349470 investigate non-root restore/backup

ZFS Pool Version 9
This page describes the features that are available with the ZFS
on-disk format, version 9. This version includes support for the
following features:
    * In addition to the existing ZFS quota and reservation features,
this release includes dataset quotas and reservations that do not
include descendent datasets, such as snapshots and clones, in the
space consumption. ("zfs set refquota" and "zfs set refreservation".)
    * A reservation is automatically set when a non-sparse ZFS volume
is created that matches the size of the volume. This release provides
an immediate reservation feature so that you set a reservation on a
non-sparse volume with enough space to take snapshots and modify the
contents of the volume.
    * CIFS server support
These features are available in Solaris Express Community Edition, build 77.
The related bugs for version 9 changes are:
    * 6431277 want filesystem-only quotas
    * 6483677 need immediate reservation
    * 6617183 CIFS Service – PSARC 2006/715

ZFS Pool Version 10
This page describes the feature that is available with the ZFS on-disk
format, version 10. This version includes support for the following
feature:
    * Devices can be added to a storage pool as "cache devices." These
devices provide an additional layer of caching between main memory and
disk. Using cache devices provides the greatest performance
improvement for random read-workloads of mostly static content.
This feature is available in the Solaris Express Community Edition, build 78.
The Solaris 10 10/08 release includes ZFS pool version 10, but support
for cache devices is not included in this Solaris release.
The related bug for the version 10 change is:
    * 6536054 second tier ("external") ARC


ZFS Pool Version 11
This page describes the feature available with version 11 of the ZFS
on-disk format. This version includes support for the following
feature:
    * Improved zpool scrub / resilver performance
This feature is available in:
    * Solaris Express Community Edition, build 94
The related bug for the version 11 change is:
    * 6343667 scrub/resilver has to start over when a snapshot is taken
    * (Note, this bug is fixed when using build 94 even with older
pool versions. However, upgrading the pool can improve scrub
performance when there are many filesystems, snapshots, and clones.)


ZFS Pool Version 12
This page describes the feature available with version 12 of the ZFS
on-disk format. This version includes support for the following
feature:
    * Properties for Snapshots
This feature is available in:
    * Solaris Express Community Edition, build 96
The related bug for the version 12 change is:
    * 6701797 want user properties on snapshots

ZFS Pool Version 13
This page describes the features available with version 13 of the ZFS
on-disk format. This version includes support for the following
features:
    * usedbysnapshots property
    * usedbychildren property
    * usedbyrefreservation property
    * usedbydataset property
These features are available in:
    * Solaris Express Community Edition, build 98
The related bug and PSARC case for version 13 change is:
    * 6730799 want snapused property
    * PSARC 2008/518 ZFS space accounting enhancements


ZFS Pool Version 14
This page describes the feature that is available with ZFS on-disk
format, version 14. This version includes support for the following
feature:
    * passthrough-x aclinherit property support
This feature is available in:
    * Solaris Express Community Edition, build 103
The related bug and PSARC case for the version 14 change are:
    * 6765166 Need to provide mechanism to optionally inherit ACE_EXECUTE
    * PSARC 2008/659 New ZFS "passthrough-x" ACL inheritance rules





-- 
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<----.      Of course it runs                William David Armstrong
<----|==========================   Bio Systems Security Networking
<----'                  FreeBSD           MSN / GT  biosystems  gmail . com
 http://biosystems.ath.cx:8080/  http://biosystems.broker.freenet6.net/
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