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Date: Tue, 8 Mar 2011 17:35:36 +0200 From: Amir Goldstein <amir73il@...il.com> To: lsf-pc@...ts.linuxfoundation.org Cc: Ext4 Developers List <linux-ext4@...r.kernel.org>, linux-fsdevel <linux-fsdevel@...r.kernel.org> Subject: [LSF/FS TOPIC] Journal guided RAID resync Hi All, I have picked up the old ext3/jbd patches a while ago and was trying to figure out how difficult would it be to port them to ext4/jbd2. The gain from these patches to anyone using software RAID should be clear, see: http://lwn.net/Articles/363490/ What is not clear to me at this point is what are the performance implications, if any, of withholding "declared" data writeback until journal commit. I also did not get to estimating the effort involved in the porting to ext4/jbd2. The absence of ext3/jbd "dirty data" buffers list is going to be one of the issues to deal with. Does anyone out there have interest in pushing this forward? Amir. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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