From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Patrick H." Subject: Re: md device renaming Date: Sun, 12 Dec 2010 19:54:08 -0700 Message-ID: <4D058AD0.7030704@feystorm.net> References: <4D0586D1.2040501@feystorm.net> <20101213134920.70512086@notabene.brown> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20101213134920.70512086@notabene.brown> Sender: linux-raid-owner@vger.kernel.org Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids Sent: Sun Dec 12 2010 19:49:20 GMT-0700 (Mountain Standard Time) From: Neil Brown To: Patrick H. linux-raid@vger.kernel.org Subject: Re: md device renaming > On Sun, 12 Dec 2010 19:37:05 -0700 "Patrick H." > wrote: > > >> So, every time I start up this md device with a specified name, it >> renames itself to something else. >> >> When I first created the array, I typo'd the name as 'nas01:isci-sdb1' >> (should be nas01:iscsi-sdb1). And now every time I assemble it with the >> correct name, it renames itself: >> >> # /sbin/mdadm -A /dev/md/nas01:iscsi-sdb1 --uuid >> abddf4ea:06524e68:8e2b8f4e:1b24c56d -R -U name >> mdadm: /dev/md/nas01:iscsi-sdb1 has been started with 2 drives (out of 3) >> # ls /dev/md/nas* >> /dev/md/nas01:isci-sdb1 >> # ls /dev/disk/by-id/md-name* >> /dev/disk/by-id/md-name-nas01:iscsi-sdb1 >> # mdadm -D /dev/md/nas01:isci-sdb1|grep Name >> Name : nas01:iscsi-sdb1 (local to host nas01) >> >> >> So, notice how it says it started it as "nas01:iscsi-sdb1", however once >> its up and I do the `ls`, it has the original name on it. I've tried -U >> name to update the name on it when its assembled, but doesnt do a thing. >> >> Am I missing something here. Shouldnt it be assembling itself with the >> specified name I gave it, not the original name? And then how do I >> update it so the name in the metadata is correct? >> (and yes I know its missing a drive, I'm testing some stuff out) >> > > It is assembling it with the name you give it, but the name stored in the > metadata is still the old name. > Try adding --update=name to the --assemble command. > > NeilBrown > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > How is it assembling with the name I gave it? It says "/dev/md/nas01:iscsi-sdb1 has been started", but it really is using "nas01:isci-sdb1". Even if it is going to use the name I created it with, it should say that instead of the name I provided on the assemble command. And I did add the update argument, see the '-U name' option on the end of the command above.