----- 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 | | | _______________________________________________ | CentOS mailing list | CentOS@centos.org | http://lists.centos.org/mailman/listinfo/centos |

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

Götz,

Did you remove the devices as well? I was working with an HP MSA and unless you removed the devices from multipath before the firmware update I ran into the errors you're seeing. It's because the old devices are still known to multipath, but don't map to a LUN on the target anymore.

https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Enterprise_Linux/5/ht...

-Hal

On Tue, Nov 6, 2012 at 5:14 AM, Götz Reinicke - IT Koordinator goetz.reinicke@filmakademie.de wrote:

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

---

CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos