From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roy Sigurd Karlsbakk Subject: Re: Question about resync in RAID5 Date: Tue, 16 Apr 2013 17:46:07 +0200 (CEST) Message-ID: <4915289.2.1366127167165.JavaMail.root@zimbra> References: <20130416102452.GC25795@cthulhu.home.robinhill.me.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <20130416102452.GC25795@cthulhu.home.robinhill.me.uk> Sender: linux-raid-owner@vger.kernel.org To: Robin Hill Cc: linux-raid@vger.kernel.org, Robin Dong List-Id: linux-raid.ids > > Is there any method to just resync WRITTEN data to new-added-disk ? > > Or any developing plan to add this feature? >=20 > No, because md is a block device it has no knowledge of what data has > actually been written to the disk or where it is stored. This means i= t > has to rebuild the entire disk. >=20 > There are plans to improve this by keeping track of which stripes hav= e > been written to, which should help (and will also mean no need for an > initial RAID sync). I don't know whether this has progressed beyond > the idea stage yet though. Interesting - do you have any docs about this? I haven't seen any talk = on this list about it... Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 98013356 roy@karlsbakk.net http://blogg.karlsbakk.net/ GPG Public key: http://karlsbakk.net/roysigurdkarlsbakk.pubkey.txt -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt.= Det er et element=C3=A6rt imperativ for alle pedagoger =C3=A5 unng=C3=A5= eksessiv anvendelse av idiomer med xenotyp etymologi. I de fleste tilf= eller eksisterer adekvate og relevante synonymer p=C3=A5 norsk. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html