From: Shaohua Li <shaohua.li@intel.com>
To: "bchociej@gmail.com" <bchociej@gmail.com>
Cc: "chris.mason@oracle.com" <chris.mason@oracle.com>,
"linux-btrfs@vger.kernel.org" <linux-btrfs@vger.kernel.org>,
"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"cmm@us.ibm.com" <cmm@us.ibm.com>,
"bcchocie@us.ibm.com" <bcchocie@us.ibm.com>,
"mrlupfer@us.ibm.com" <mrlupfer@us.ibm.com>,
"crscott@us.ibm.com" <crscott@us.ibm.com>,
"mlupfer@gmail.com" <mlupfer@gmail.com>,
"conscott@vt.edu" <conscott@vt.edu>
Subject: Re: [RFC v2 PATCH 0/6] Btrfs: Add hot data relocation functionality
Date: Thu, 26 Aug 2010 10:13:43 +0800 [thread overview]
Message-ID: <20100826021343.GA452@sli10-conroe.sh.intel.com> (raw)
In-Reply-To: <1281651726-23501-1-git-send-email-bchociej@gmail.com>
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
next prev parent reply other threads:[~2010-08-26 2:13 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-12 22:22 [RFC v2 PATCH 0/6] Btrfs: Add hot data relocation functionality bchociej
2010-08-12 22:22 ` [RFC v2 PATCH 1/6] Btrfs: Add experimental hot data hash list index bchociej
2010-08-12 22:22 ` [RFC v2 PATCH 2/6] Btrfs: Add data structures for hot data tracking bchociej
2010-08-12 22:22 ` [RFC v2 PATCH 3/6] Btrfs: Add hot data relocation facilities bchociej
2010-08-12 22:22 ` [RFC v2 PATCH 4/6] Btrfs: Add debugfs interface for hot data stats bchociej
2010-08-12 22:22 ` [RFC v2 PATCH 5/6] Btrfs: 3 new ioctls related to hot data features bchociej
2010-08-12 22:22 ` [RFC v2 PATCH 6/6] Btrfs: Add hooks to enable hot data tracking bchociej
2010-08-26 2:13 ` Shaohua Li [this message]
2010-08-30 0:42 ` [RFC v2 PATCH 0/6] Btrfs: Add hot data relocation functionality Hubert Kario
2010-08-30 0:42 ` Hubert Kario
2010-08-30 0:42 ` Hubert Kario
2010-08-30 1:05 ` Shaohua Li
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