By now, everyone knows that if you want to make a file unrecoverable, you can't simply delete it - you have to use a tool like 'shred' or 'srm' to overwrite its contents. But a common question is whether this is effective on an ext3, ext4, or other journaled filesystems. This article discusses these filesystems, and whether secure deletion tools work on them.
Read more »Secure Deletion Tools and Journaled Filesystems: Do they work?
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Linux File Linking Explained: Hard vs. Soft Links
http://techthrob.com –
In Linux, there are two types of file links: hardlinks and softlinks. This article shows the difference between hard and soft links, how they work, and explains when you should pick a softlink over a hardlink.
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Using Disk Compression With Btrfs To Enhance Performance
http://www.phoronix.com –
Earlier this month we delivered benchmarks comparing the ZFS, EXT4, and Btrfs file-systems from both solid-state drives and hard drives. In this article we have our Btrfs test results when the zlib compression mount option was enabled for looking at the SSD compression performance.
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Learn Linux, 101: Maintain the integrity of filesystems
http://www.ibm.com –
This article covers standard and journaling (also called journaling) filesystems with an emphasis is on ext2 (standard filesystem) and ext3 (journaling filesystem), but tools for other filesystems are mentioned too. Most of this material applies to both 2.4 and 2.6 kernels. Most examples in this article use Fedora 12, with a 2.6.32 kernel. Your results on other systems may differ.
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Convert ext2/3 to ext4
http://www.ghacks.net –
In this article I am going to show you how to migrate your ext2 or ext3 partition to ext4. I will use a Ubuntu machine as an example. I want to warn you that you could lose data by doing this so, following good administrative practices, back up your data!
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LVM, RAID, XFS and EXT3 filesystems tuning for small files heavy load parallel I/O on Debian
http://www.techforce.com.br –
Thousands concurrent parallel read write accesses over tens of millions of small files is a terrible performance tuning problem for e-mail servers.
You must understand and fine tune all your infrastructure chain, following the previous articles for data storage and multipath on Debian 5.x Lenny.
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Accessing WebDAV as a Filesystem With davfs2
http://www.serverwatch.com –
I had a request this week to check out davfs2. This neat open source utility allows you to connect to a WebDAV server as a regular filesystem, meaning that applications that don't support WebDAV can still access resources shared via WebDAV.
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Kernel Log: Coming in 2.6.34 (Part 2) - File Systems
http://www.h-online.com –
Version 2.6.34 of the Linux kernel will be the first to support the Ceph and LogFS file systems. A number of changes to the Btrfs and XFS code promise improved performance. The kernel should now be better at working with drives with 4[ ]KB logical sectors
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Linux File Systems
http://tcs-security-blanket.blogspot.com –
LINUX FILE SYSTEMS are an essential operating system resource. Modern file systems and disk drive technology are robust and reliable — so, most administrators put little effort into planning or worrying about them once the operating system is configured. This makes me both smile and cringe.
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OpenSolaris and ZFS: The beauty of snapshots.
http://blog.hydrasystemsllc.com –
Two days ago, I ran through a long needed image update to the OpenSolaris 2010.03 preview. I was updating through the pkg update manager from build 129 to build 134. So when I say, it was much needed, I wasn’t kidding. Anyway, after over 1 GBytes of updates was completed, a new boot environment (BE) was created with the native ZFS snapshot feature and I shut down the PC for the night.
Read more »The Performance Of EXT4 Then & Now
http://www.phoronix.com –
Over the past week there has been a lot of talk about the EXT4 file-system following the announcement that Google is migrating their EXT2 file-systems to EXT4. Their reasons for this transition to EXT4 are attributed to the easy migration process and Google engineers are pleased with this file-system's performance.
Read more »10 Reasons Why ZFS Rocks
http://www.enterprisestorageforum.com –
Here are the top 10 features that ZFS fans find insanely great...
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Fedora 13 May Support Btrfs System Rollbacks
http://www.phoronix.com –
One of the features though that has just been proposed for Fedora 13 is rather interesting and that is system rollback support via Btrfs file-system snapshots.
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Testing Out Linux File-Systems On A USB Flash Drive
http://www.phoronix.com –
In past articles we have delivered plenty of file-system benchmarks from testing out EXT4 to Btrfs to NILFS2. One area though where we have not published any file-system benchmarks is for USB flash drives.
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Reiser4 May Go For Mainline Inclusion In 2010
http://www.phoronix.com –
In the United States, the end of Autumn is nearing and Winter is approaching, but there hasn't yet been any push to get Reiser4 into the mainline Linux kernel. What has happened? Well, we asked Shishkin.
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