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	<title>Blog O' Matty &#187; Solaris ZFS</title>
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	<description>Blog O' Matty</description>
	<lastBuildDate>Wed, 16 May 2012 00:16:36 +0000</lastBuildDate>
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		<item>
		<title>A great introduction to ZFS de-duplication</title>
		<link>http://prefetch.net/blog/index.php/2012/02/18/a-great-introduction-to-zfs-de-duplication/</link>
		<comments>http://prefetch.net/blog/index.php/2012/02/18/a-great-introduction-to-zfs-de-duplication/#comments</comments>
		<pubDate>Sat, 18 Feb 2012 12:57:56 +0000</pubDate>
		<dc:creator>matty</dc:creator>
				<category><![CDATA[Solaris ZFS]]></category>

		<guid isPermaLink="false">http://prefetch.net/blog/?p=5577</guid>
		<description><![CDATA[I&#8217;ve been looking into deploying ZFS de-duplication, and I have one application in particular (backup staging) that would greatly benefit from it. George Wilson did an awesome introduction to ZFS de-duplication video, and it&#8217;s a great place to get started. I&#8217;m planning to start testing out de-duplication as soon as my SSDs are ordered, and [...]]]></description>
		<wfw:commentRss>http://prefetch.net/blog/index.php/2012/02/18/a-great-introduction-to-zfs-de-duplication/feed/</wfw:commentRss>
		<slash:comments>3</slash:comments>
		</item>
		<item>
		<title>An interesting way of looking at file system versioning (ZFS feature flags)</title>
		<link>http://prefetch.net/blog/index.php/2012/02/16/an-interesting-way-of-looking-at-file-system-versioning-zfs-feature-flags/</link>
		<comments>http://prefetch.net/blog/index.php/2012/02/16/an-interesting-way-of-looking-at-file-system-versioning-zfs-feature-flags/#comments</comments>
		<pubDate>Thu, 16 Feb 2012 10:00:30 +0000</pubDate>
		<dc:creator>matty</dc:creator>
				<category><![CDATA[Solaris ZFS]]></category>

		<guid isPermaLink="false">http://prefetch.net/blog/?p=5575</guid>
		<description><![CDATA[I got a chance to catch up with a bunch of stuff in my &#8220;need to read&#8221; / &#8220;need to watch&#8221; folder this past weekend. One of the videos I watched talked about ZFS feature flags, and how they will be used by the Illumos community to add new features to ZFS. ZFS feature flags [...]]]></description>
		<wfw:commentRss>http://prefetch.net/blog/index.php/2012/02/16/an-interesting-way-of-looking-at-file-system-versioning-zfs-feature-flags/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Improved ZFS scrub statistics in Solaris 10 update 9</title>
		<link>http://prefetch.net/blog/index.php/2011/12/06/improved-zfs-scrub-statistics-in-solaris-10-update-9/</link>
		<comments>http://prefetch.net/blog/index.php/2011/12/06/improved-zfs-scrub-statistics-in-solaris-10-update-9/#comments</comments>
		<pubDate>Tue, 06 Dec 2011 12:50:34 +0000</pubDate>
		<dc:creator>matty</dc:creator>
				<category><![CDATA[Solaris ZFS]]></category>

		<guid isPermaLink="false">http://prefetch.net/blog/?p=5202</guid>
		<description><![CDATA[I talked about the ZFS scrub feature a few months back. In the latest Solaris 10 update the developers added additional scrub statistics, which are quite handy for figuring out throughout and estimated completion times: $ zpool scrub rpool $ zpool status -v pool: rpool state: ONLINE scan: scrub in progress since Tue Dec 6 [...]]]></description>
		<wfw:commentRss>http://prefetch.net/blog/index.php/2011/12/06/improved-zfs-scrub-statistics-in-solaris-10-update-9/feed/</wfw:commentRss>
		<slash:comments>2</slash:comments>
		</item>
		<item>
		<title>Using the ZFS scrub feature to verify the integrity of your storage</title>
		<link>http://prefetch.net/blog/index.php/2011/10/15/using-the-zfs-scrub-feature-to-verify-the-integrity-of-your-storage/</link>
		<comments>http://prefetch.net/blog/index.php/2011/10/15/using-the-zfs-scrub-feature-to-verify-the-integrity-of-your-storage/#comments</comments>
		<pubDate>Sat, 15 Oct 2011 12:43:52 +0000</pubDate>
		<dc:creator>matty</dc:creator>
				<category><![CDATA[Solaris ZFS]]></category>

		<guid isPermaLink="false">http://prefetch.net/blog/?p=4644</guid>
		<description><![CDATA[There have been a number of articles written over the past few years that talk about how silent data corruption can occur due to faulty hardware, solar flares as well as software defects. I&#8217;ve seen some oddities in the past that would probably fall into these categories, but without sufficient time to dig deep it&#8217;s [...]]]></description>
		<wfw:commentRss>http://prefetch.net/blog/index.php/2011/10/15/using-the-zfs-scrub-feature-to-verify-the-integrity-of-your-storage/feed/</wfw:commentRss>
		<slash:comments>3</slash:comments>
		</item>
		<item>
		<title>Better ZFS pool fault handling coming to an opensolaris release near you!</title>
		<link>http://prefetch.net/blog/index.php/2009/09/11/better-zfs-pool-fault-handling-coming-to-an-opensolaris-release-near-you/</link>
		<comments>http://prefetch.net/blog/index.php/2009/09/11/better-zfs-pool-fault-handling-coming-to-an-opensolaris-release-near-you/#comments</comments>
		<pubDate>Fri, 11 Sep 2009 22:46:29 +0000</pubDate>
		<dc:creator>matty</dc:creator>
				<category><![CDATA[Solaris ZFS]]></category>

		<guid isPermaLink="false">http://prefetch.net/blog/?p=2933</guid>
		<description><![CDATA[I just saw the following ARC case fly by, and this will be a welcome addition to the ZFS file system!: OVERVIEW: Uncooperative or deceptive hardware, combined with power failures or sudden lack of access to devices, can result in zpools without redundancy being non-importable. ZFS' copy-on-write and Merkle tree properties will sometimes allow us [...]]]></description>
		<wfw:commentRss>http://prefetch.net/blog/index.php/2009/09/11/better-zfs-pool-fault-handling-coming-to-an-opensolaris-release-near-you/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Triple parity RAIDZ (RAIDZ3) support in ZFS</title>
		<link>http://prefetch.net/blog/index.php/2009/07/16/triple-parity-raidz-raidz3-support-in-zfs/</link>
		<comments>http://prefetch.net/blog/index.php/2009/07/16/triple-parity-raidz-raidz3-support-in-zfs/#comments</comments>
		<pubDate>Fri, 17 Jul 2009 01:36:29 +0000</pubDate>
		<dc:creator>matty</dc:creator>
				<category><![CDATA[Solaris ZFS]]></category>

		<guid isPermaLink="false">http://prefetch.net/blog/?p=2585</guid>
		<description><![CDATA[I just saw the following putback notice come over the wire: Author: Adam Leventhal Repository: /hg/onnv/onnv-gate Latest revision: 17811c723fb4f9fce50616cb740a92c8f6f97651 Total changesets: 1 Log message: 6854612 triple-parity RAID-Z This is pretty sweet, and with the introduction of 2TB+ drives, using multiple parity drives will become essential to ensuring that your data is safe when a drive [...]]]></description>
		<wfw:commentRss>http://prefetch.net/blog/index.php/2009/07/16/triple-parity-raidz-raidz3-support-in-zfs/feed/</wfw:commentRss>
		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>Configuring jumpstart to install Solaris on a ZFS root</title>
		<link>http://prefetch.net/blog/index.php/2009/06/21/configuring-jumpstart-to-install-solaris-on-a-zfs-root/</link>
		<comments>http://prefetch.net/blog/index.php/2009/06/21/configuring-jumpstart-to-install-solaris-on-a-zfs-root/#comments</comments>
		<pubDate>Sun, 21 Jun 2009 13:56:11 +0000</pubDate>
		<dc:creator>matty</dc:creator>
				<category><![CDATA[Solaris ZFS]]></category>

		<guid isPermaLink="false">http://prefetch.net/blog/?p=2059</guid>
		<description><![CDATA[I was playing around with ZFS root a week or two back, and wanted to be able to create the ZFS root pool and associated file systems (dump device, swap, /var) through jumpstart. To install to a ZFS root pool, you can add the &#8220;pool&#8221; directive to your client profile: pool rpool auto 4g 4g [...]]]></description>
		<wfw:commentRss>http://prefetch.net/blog/index.php/2009/06/21/configuring-jumpstart-to-install-solaris-on-a-zfs-root/feed/</wfw:commentRss>
		<slash:comments>2</slash:comments>
		</item>
		<item>
		<title>Automating ZFS snapshots with the SMF auto-snapshot service</title>
		<link>http://prefetch.net/blog/index.php/2009/06/20/automating-zfs-snapshots-with-the-smf-auto-snapshot-service/</link>
		<comments>http://prefetch.net/blog/index.php/2009/06/20/automating-zfs-snapshots-with-the-smf-auto-snapshot-service/#comments</comments>
		<pubDate>Sat, 20 Jun 2009 15:35:59 +0000</pubDate>
		<dc:creator>matty</dc:creator>
				<category><![CDATA[Solaris ZFS]]></category>

		<guid isPermaLink="false">http://prefetch.net/blog/?p=2203</guid>
		<description><![CDATA[One of the nice features of ZFS is the ability to take file system snapshots, which you can then use to recover perviously deleted data. In recent opensolaris and Nevada builds, there are several auto-snapshot services that can be used to schedule hourly, daily, weekly and monthly snapshots: $ svcs -a &#124; grep auto-snapshot disabled [...]]]></description>
		<wfw:commentRss>http://prefetch.net/blog/index.php/2009/06/20/automating-zfs-snapshots-with-the-smf-auto-snapshot-service/feed/</wfw:commentRss>
		<slash:comments>4</slash:comments>
		</item>
		<item>
		<title>ZFS user and group quotas</title>
		<link>http://prefetch.net/blog/index.php/2009/03/31/zfs-user-and-group-quotas/</link>
		<comments>http://prefetch.net/blog/index.php/2009/03/31/zfs-user-and-group-quotas/#comments</comments>
		<pubDate>Tue, 31 Mar 2009 21:48:36 +0000</pubDate>
		<dc:creator>matty</dc:creator>
				<category><![CDATA[Solaris ZFS]]></category>

		<guid isPermaLink="false">http://prefetch.net/blog/?p=1334</guid>
		<description><![CDATA[ZFS allows quotas to be defined for each file system, but currently lacks the ability to define user and group quotas inside a file system (you can create one file system per user to get around this). This issue is being addressed, and user and group quotas will soon be part of opensolaris. Here is [...]]]></description>
		<wfw:commentRss>http://prefetch.net/blog/index.php/2009/03/31/zfs-user-and-group-quotas/feed/</wfw:commentRss>
		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>ZFS in the trenches</title>
		<link>http://prefetch.net/blog/index.php/2009/02/25/zfs-in-the-trenches/</link>
		<comments>http://prefetch.net/blog/index.php/2009/02/25/zfs-in-the-trenches/#comments</comments>
		<pubDate>Thu, 26 Feb 2009 01:51:40 +0000</pubDate>
		<dc:creator>mike</dc:creator>
				<category><![CDATA[Solaris ZFS]]></category>

		<guid isPermaLink="false">http://prefetch.net/blog/?p=1054</guid>
		<description><![CDATA[Ben Rockwood is awesome.  If you haven&#8217;t had a chance to check out his blog, its a must read for any Solaris Admin. He gave a presentation at the Open Storage Summit about ZFS.  (Video Here) Its worth the read / view   for some indepth ZFS concepts. Joerg assisted in turning some of this [...]]]></description>
		<wfw:commentRss>http://prefetch.net/blog/index.php/2009/02/25/zfs-in-the-trenches/feed/</wfw:commentRss>
		<slash:comments>2</slash:comments>
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