[CentOS] disk device lvm iscsi questions ....
Götz Reinicke - IT Koordinator
goetz.reinicke at filmakademie.de
Fri Nov 9 08:21:52 UTC 2012
Am 06.11.12 17:30, schrieb James A. Peltier:
> ----- Original Message -----
> | Hi,
> | I have an iscsistorage which I attached to a new centos 6.3 server. I
> | added logic volumes as usual, the block devices (sdb & sdc) showed up
> | in
> | dmesg; I can mount and access the stored files.
> | Now we did an firmware software update to that storage (while
> | unmounted/detached from the fileserver) and after reboot of the
> | storage
> | and reatache the iscsi nodes I do get new devices. (sdd & sde)
> | The last time I remember a simple vgchange -ay changed all neede
> | settings so that I can mount and use the volumes as expected.
> | But this time I do get an IO error like
> | /dev/sun7110to_dali_LUN_3/lvol0: read failed after 0 of 4096 at
> | 1610608476160: Eingabe-/Ausgabefehler
> | but also:
> | 1 logical volume(s) in volume group "sun7110to_dali_LUN_3" now
> | active
> | What might be messed up? What can I try do get the
> | storage/filesystems
> | back online?
> | Thanks for any sugesstion and regards . Götz
> | --
> | Götz Reinicke - IT-Koordinator - Filmakademie Baden-Württemberg GmbH
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> Sounds like the update may have renamed the old devices to something new. This has happened once to be with a Dell Equallogic firmware update. Are you mounting the devices using a device name or using device labels? If the former you should use labels if you created them or the UUID. If you have a look in /dev/disk you'll see all the options available to your OS. If you choice to go with UUID then have a look in /dev/disk/by-uuid to get the path
on that storage I did not used labels AFAIK ... it was long ago that I
set that up. So I looked up the uuid, but dont got a working clue for me.
I than tried the steps from Hal Martins mail removing the LVM settings
etc and created a new LVM (PD/VG) with the settings I used for
installing the storage on the old server.
But I still cant mount the volumes.
May be I messed more up than to fix? :(
We dont use multipathing on that storage.
ANY suggestion and hint is very welcome!
Thanks and best regards. Götz
Götz Reinicke - IT-Koordinator - Filmakademie Baden-Württemberg GmbH
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