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 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
[CentOS] disk device lvm iscsi questions ....
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
