Linked by Rahul on Thu 22nd Jan 2009 18:33 UTC
Fedora Core The latest Fedora development snapshot makes Ext4 the default file system and adds experimental support for the next generation btrfs filesystem. "According to current plans, version 11 of Fedora, which is expected to arrive in late May, will use Ext4 as its standard file system. That's what the Fedora Engineering Steering Committee (FESCo) recently decided, following a heated discussion in an IRC meeting. If however Ext3's successor encounters big problems with the pre-release versions of Fedora 11, the developers will dump that plan and revert to Ext3."
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RE[3]: bleeding edge
by AdamW on Thu 22nd Jan 2009 22:25 UTC in reply to "RE[2]: bleeding edge"
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It has a significant effect on performance - how the filesystem works can affect how well it works on operations involving large amounts of files, either sequential or randomly ordered. It also has implications for data safety: properly implemented journalized filesystems are far less likely to lose data in a hard power-off than others.

One interesting upcoming area is performance on SSDs. Using ext4 and, to a greater extent, btrfs will lead to significantly better performance on SSDs than ext3.

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