Re: [CentOS] disk device lvm iscsi questions ....
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 | | | ___ | 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 Hi, 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 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] disk device lvm iscsi questions ....
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/html/Online_Storage_Reconfiguration_Guide/removing_devices.html -Hal On Tue, Nov 6, 2012 at 5:14 AM, Götz Reinicke - IT Koordinator goetz.reini...@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 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] disk device lvm iscsi questions ....
- 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 -- James A. Peltier Manager, IT Services - Research Computing Group Simon Fraser University - Burnaby Campus Phone : 778-782-6573 Fax : 778-782-3045 E-Mail : jpelt...@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 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
