[CentOS] disk device lvm iscsi questions ....
James A. Peltier
jpeltier at sfu.ca
Tue Nov 6 16:30:07 UTC 2012
----- 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
--
James A. Peltier
Manager, IT Services - Research Computing Group
Simon Fraser University - Burnaby Campus
Phone : 778-782-6573
Fax : 778-782-3045
E-Mail : jpeltier at sfu.ca
Website : http://www.sfu.ca/itservices
http://blogs.sfu.ca/people/jpeltier
"The smartest people are constantly revising their understanding, reconsidering a problem they thought they’d already solved. They’re open to new points of view, new information, new ideas, contradictions, and challenges to their own way of thinking." - Jeff Bezos
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