Disk Device Lvm Iscsi Questions ….

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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 . G

3 thoughts on - 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
    |
    |
    |

  • Am 06.11.12 17:30, schrieb James A. Peltier:

    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

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