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Kernel Log: Coming in 3.1 (Part 2) - Storage and filesystems

Sep 09, 2011, 16:00 (1 Talkback[s])


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"The software RAID code now supports bad block management and dm-crypt can notify SSDs about freed storage areas. The iSCSI target framework LIO has been updated to Version 4.1 and the default Ext3 settings make the filesystem more robust, but a bit slower.

In Linux 3.1, the Ext4 filesystem will, for the first time, remember which unused blocks it has already reported to underlying storage media when requested to do so by Fstrim. On subsequent calls to Fstrim, it then only needs to report blocks which have been freed up in the interim, thus speeding up batched discard, which is useful for SSDs and thinly provisioned storage.

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