Sent: Sun Dec 12 2010 19:49:20 GMT-0700 (Mountain Standard Time)
From: Neil Brown <neilb@xxxxxxx>
To: Patrick H. <linux-raid@xxxxxxxxxxxx> linux-raid@xxxxxxxxxxxxxxx
Subject: Re: md device renaming
On Sun, 12 Dec 2010 19:37:05 -0700 "Patrick H." <linux-raid@xxxxxxxxxxxx>
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
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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.
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