So anyways, I created my RAID device, and waited about 4 hours for it to sync,
and all was happy with the world, so I went to bed. This morning, I made an
ext3 file system on it, set up some directories, set the acls, added to my
smb.conf file, mapped a drive, and after about 4Gb copied onto it, I got an
error. Checking in the logs, there was an error about trying to access past the
physical extent.
I did a quick check of mdstat, and one of the array disks was down, and an dm
device had shown up in the array configuration. A quick dmsetup -C info again
shows that mpath0p1 has returned again.
Does anyone know why it keeps appearing, and more importantly, is there any way
of persuading it not to...?
Thanks again for any help and pointers people can give...
Graham
----- Original Message ----
From: jahammonds prost <[EMAIL PROTECTED]>
To: Neil Brown <[EMAIL PROTECTED]>
Cc: Justin Piszcz <[EMAIL PROTECTED]>; linux-raid@vger.kernel.org
Sent: Tuesday, 27 February, 2007 8:10:36 PM
Subject: Re: trouble creating array
Just an update for everyone on this (and for the archives), Did some digging,
and had a look at the device mapper config
# dmsetup -C info
Name Maj Min Stat Open Targ Event UUID
mpath0 253 0 L--w 1 1 0
VolGroup00-LogVol01 253 3 L--w 1 1 0
LVM-2sahQifzg9s9k0xSkpnzpGCYd7JNVXzUof6XmQ0fhzJ6jIbQLciAbm6lJLwK0Aex
VolGroup00-LogVol00 253 2 L--w 1 1 0
LVM-2sahQifzg9s9k0xSkpnzpGCYd7JNVXzUt3sJ3nwvJF8cr6ebv5AdnY0j4Ajl6U0I
mpath0p1 253 1 L--w 0 1 0
Those 2 multipath devices shouldn't have been there, and indeed mpath0p1 were
my 2 recalcitrant disks.
# dmsetup -C remove mpath0p1
# dmsetup -C remove mpath0
And they were both gone (you need to start at the bottom of the tree when
removing them).
A quick fdisk of my disks to create sdb1 and sdc1 partitions, and my array will
be synched in 204 mins...:)
Thanks to everyones help for pointing me in the right direction.. It was a trip
I would have preferred not to have made, but like all trips like that, it's
been illuminating.
Thanks again.
Graham
----- Original Message ----
From: Neil Brown <[EMAIL PROTECTED]>
To: jahammonds prost <[EMAIL PROTECTED]>
Cc: Justin Piszcz <[EMAIL PROTECTED]>; linux-raid@vger.kernel.org
Sent: Sunday, 25 February, 2007 11:40:26 PM
Subject: Re: trouble creating array
On Sunday February 25, [EMAIL PROTECTED] wrote:
>
>
> Any ideas how to find out what has it open? I can happily write all over the
> disk with dd... I can create and delete the partition, and it's all good... I
> will try deleting the sd{b,c}1 partitions, reboot, and see what happens.
>
ls -l /sys/block/*/holders/* ??
NeilBrown
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