Re: [ovirt-users] iSCSI Data Domain Down

[Arman Khalatyan]

Nice!
To automate that you can put it into:
/etc/rc.local
chmod +x /etc/rc.local
Then put dmremove and targetcli there.
Your service will come back after the power fails.
Am 02.05.2016 12:39 vorm. schrieb "Clint Boggio" :

> Thank you so much Arman. With use of that command, I was able to restore
> service.
>
> I really appreciate the help
>
> On May 1, 2016, at 2:58 PM, Arman Khalatyan  wrote:
>
> Hi, before to start target cli you should remove all lvm auto-imported
> volumes:
> dmsetup remove_all
> Then restart your targetcli.
> Am 01.05.2016 1:51 nachm. schrieb "Clint Boggio" :
>
>> Greetings oVirt Family;
>>
>> Due to catastrophic power failure, my datacenter lost power. I am using a
>> CentOS7 server to provide ISCSI services to my OVirt platform.
>>
>> When the power came back on, and the iscsi server booted back up, the
>> filters in lvm.conf were faulty and LVM assumed control over the LVM's that
>> OVirt uses as the disks for the VMs. This tanked target.service because it
>> claims "device already in use" and my datacenter is down.
>>
>> I've tried several filter combinations in lvm.conf to no avail, and in my
>> search I've found no documentation on how to make LVM "forget" about the
>> volumes that it had assumed and release them.
>>
>> Do any of you know of a procedure to make lvm forget about and release
>> the volumes on /dev/sda ?
>>
>> OVirt 3.6.5 on CentOS 7
>> 4 Hypervisor nodes CentOS7
>> 1 Dedicated engine CentOS7
>> 1 iscsi SAN CentOS 7 exporting 10TB block device from a Dell Perc RAID
>> controller /dev/sda with targetcli.
>> 1 NFS server for ISO and Export Domains 5TB
>>
>> I'm out I ideas and any help would be greatly appreciated.
>>
>> I'm currently using dd to recover the VM disk drives over to the NFS
>> server in case this cannot be recovered.
>> ___
>> Users mailing list
>> Users@ovirt.org
>> http://lists.ovirt.org/mailman/listinfo/users
>>
>
___
Users mailing list
Users@ovirt.org
http://lists.ovirt.org/mailman/listinfo/users

Re: [ovirt-users] iSCSI Data Domain Down

[Clint Boggio]

Thank you so much Arman. With use of that command, I was able to restore 
service.

I really appreciate the help

> On May 1, 2016, at 2:58 PM, Arman Khalatyan  wrote:
> 
> Hi, before to start target cli you should remove all lvm auto-imported 
> volumes:
> dmsetup remove_all
> Then restart your targetcli.
> Am 01.05.2016 1:51 nachm. schrieb "Clint Boggio" :
>> Greetings oVirt Family;
>> 
>> Due to catastrophic power failure, my datacenter lost power. I am using a 
>> CentOS7 server to provide ISCSI services to my OVirt platform.
>> 
>> When the power came back on, and the iscsi server booted back up, the 
>> filters in lvm.conf were faulty and LVM assumed control over the LVM's that 
>> OVirt uses as the disks for the VMs. This tanked target.service because it 
>> claims "device already in use" and my datacenter is down.
>> 
>> I've tried several filter combinations in lvm.conf to no avail, and in my 
>> search I've found no documentation on how to make LVM "forget" about the 
>> volumes that it had assumed and release them.
>> 
>> Do any of you know of a procedure to make lvm forget about and release the 
>> volumes on /dev/sda ?
>> 
>> OVirt 3.6.5 on CentOS 7
>> 4 Hypervisor nodes CentOS7
>> 1 Dedicated engine CentOS7
>> 1 iscsi SAN CentOS 7 exporting 10TB block device from a Dell Perc RAID 
>> controller /dev/sda with targetcli.
>> 1 NFS server for ISO and Export Domains 5TB
>> 
>> I'm out I ideas and any help would be greatly appreciated.
>> 
>> I'm currently using dd to recover the VM disk drives over to the NFS server 
>> in case this cannot be recovered.
>> ___
>> Users mailing list
>> Users@ovirt.org
>> http://lists.ovirt.org/mailman/listinfo/users
___
Users mailing list
Users@ovirt.org
http://lists.ovirt.org/mailman/listinfo/users

Re: [ovirt-users] iSCSI Data Domain Down

[Arman Khalatyan]

Hi, before to start target cli you should remove all lvm auto-imported
volumes:
dmsetup remove_all
Then restart your targetcli.
Am 01.05.2016 1:51 nachm. schrieb "Clint Boggio" :

> Greetings oVirt Family;
>
> Due to catastrophic power failure, my datacenter lost power. I am using a
> CentOS7 server to provide ISCSI services to my OVirt platform.
>
> When the power came back on, and the iscsi server booted back up, the
> filters in lvm.conf were faulty and LVM assumed control over the LVM's that
> OVirt uses as the disks for the VMs. This tanked target.service because it
> claims "device already in use" and my datacenter is down.
>
> I've tried several filter combinations in lvm.conf to no avail, and in my
> search I've found no documentation on how to make LVM "forget" about the
> volumes that it had assumed and release them.
>
> Do any of you know of a procedure to make lvm forget about and release the
> volumes on /dev/sda ?
>
> OVirt 3.6.5 on CentOS 7
> 4 Hypervisor nodes CentOS7
> 1 Dedicated engine CentOS7
> 1 iscsi SAN CentOS 7 exporting 10TB block device from a Dell Perc RAID
> controller /dev/sda with targetcli.
> 1 NFS server for ISO and Export Domains 5TB
>
> I'm out I ideas and any help would be greatly appreciated.
>
> I'm currently using dd to recover the VM disk drives over to the NFS
> server in case this cannot be recovered.
> ___
> Users mailing list
> Users@ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>
___
Users mailing list
Users@ovirt.org
http://lists.ovirt.org/mailman/listinfo/users