From mboxrd@z Thu Jan 1 00:00:00 1970 From: Robin Dong Subject: Question about resync in RAID5 Date: Tue, 16 Apr 2013 18:02:40 +0800 Message-ID: <1366106560-12957-1-git-send-email-robin.k.dong@gmail.com> Return-path: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids Dear Raid experts, I have a soft RAID5 volume and after one disk failed I replaced it with a new hard-disk. Then the raid5 volume begin to resync with WHOLE new disk. There is only 1G data in the RAID5 volume so I think resync whole disk is not efficient. Take ZFS for example, when replacing with a new disk, it only resync the data which are written after the creation of the volume. Is there any method to just resync WRITTEN data to new-added-disk ? Or any developing plan to add this feature?