Messages in this thread |  | | | Date | Thu, 26 Aug 2010 10:13:43 +0800 | | From | Shaohua Li <> | | Subject | Re: [RFC v2 PATCH 0/6] Btrfs: Add hot data relocation functionality |
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On Fri, Aug 13, 2010 at 06:22:00AM +0800, bchociej@gmail.com wrote: > > - Hooks in existing Btrfs functions to track data access frequency > (btrfs_direct_IO, btrfs_readpages, and extent_write_cache_pages) > > - New rbtrees for tracking access frequency of inodes and sub-file > ranges (hotdata_map.c) > > - A hash list for indexing data by its temperature (hotdata_hash.c) > > - A debugfs interface for dumping data from the rbtrees (debugfs.c) > > - A background kthread for relocating data to faster media based on > temperature Hi, I'm wondering if the temperature info can be exported to userspace, and let a daemon to do the relocation (by ioctl). A userspace daemon is more flexible.
Thanks, Shaohua
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