[Linux-cluster] falied to implement HA-LVM with clvmd rhcs5.6

שלום קלמר sklemer at gmail.com
Sat Feb 5 07:37:37 UTC 2011 

Hi.

 After reading the manual again ,I think i know  what was my setup problem.

The VGs should be taged as cluster , ( this action will path the lvm.sh
check ) & the LVs should be deactivated.

The cluster will activate the LVs as exclusive. (i will check it on monday
).

Shalom.


On Sat, Feb 5, 2011 at 12:07 AM, שלום קלמר <sklemer at gmail.com> wrote:

> Hello Dominic.
>
> I will be in lab on monday and collect all steps & logs files.
>
> btw - Is it  redhat recommendation to preferre  using  HA-LVM with the
> locking_type=1 method ??
>
>
> Regards
>
> Shalom
>
>
> On Fri, Feb 4, 2011 at 5:23 PM, dOminic <share2dom at gmail.com> wrote:
>
>> Hi Shalom,
>>
>> Are you still facing problem implementing HA-LVM with locking_type = 3
>> setting ?. If yes, it would be great if you could provide the following
>> details .
>> So that others can also check
>>
>> * steps you are following along with complete output
>> * status in "clustat" after making changes in cluster.conf
>> * attach cluster.conf and /var/log/messages.
>>
>> dominic
>>
>> On Fri, Feb 4, 2011 at 8:34 PM, שלום קלמר <sklemer at gmail.com> wrote:
>>
>>> Thanks.
>>>
>>> This is the old methos and its work great but its hard to maintain such
>>> cluster.
>>>
>>> Shalom.
>>>
>>>
>>> On Fri, Feb 4, 2011 at 4:32 PM, Dominic Geevarghese <share2dom at gmail.com
>>> > wrote:
>>>
>>>>
>>>> Hi,
>>>>
>>>> I am not sure about the error you are getting but it would be great if
>>>> you could try the preferred method
>>>>
>>>> locking_type = 1
>>>> volume_list [ "your-root-vg-name" , "@hostname" ]
>>>>
>>>> rebuild initrd
>>>>
>>>> add the <lvm> and <fs> resources in cluster.conf , start the cman,
>>>> rgmanager .
>>>>
>>>>
>>>> Thanks,
>>>>
>>>> On Thu, Feb 3, 2011 at 8:02 PM, Corey Kovacs <corey.kovacs at gmail.com>wrote:
>>>>
>>>>> Excellent,
>>>>>
>>>>>
>>>>> Thanks
>>>>>
>>>>> -C
>>>>>
>>>>> On Thu, Feb 3, 2011 at 10:38 AM, שלום קלמר <sklemer at gmail.com> wrote:
>>>>> >
>>>>> >
>>>>> > On Thu, Feb 3, 2011 at 12:35 PM, שלום קלמר <sklemer at gmail.com>
>>>>> wrote:
>>>>> >>
>>>>> >>
>>>>> >>
>>>>> >> https://access.redhat.com/kb/docs/DOC-3068
>>>>> >>
>>>>> >> On Thu, Feb 3, 2011 at 11:13 AM, Corey Kovacs <
>>>>> corey.kovacs at gmail.com>
>>>>> >> wrote:
>>>>> >>>
>>>>> >>> Is using ha-lvm with clvmd a new capability? It's always been my
>>>>> >>> understanding that the lvm locking type for using ha-lvm had to be
>>>>> set
>>>>> >>> to '1'.
>>>>> >>>
>>>>> >>> I'd much rather be using clvmd if it is the way to go. Can you
>>>>> point
>>>>> >>> me to the docs you are seeing these instructions in please?
>>>>> >>>
>>>>> >>> As for why your config isn't working, clvmd requires that it's
>>>>> >>> resources are indeed tagged as cluster volumes, so you might try
>>>>> doing
>>>>> >>> that and see how it goes.
>>>>> >>>
>>>>> >>> -C
>>>>> >>>
>>>>> >>> On Thu, Feb 3, 2011 at 7:26 AM, שלום קלמר <sklemer at gmail.com>
>>>>> wrote:
>>>>> >>> > Hello.
>>>>> >>> >
>>>>> >>> >
>>>>> >>> >
>>>>> >>> > I followed redhat instruction trying install HA-LVM with clvmd. (
>>>>> rhcs
>>>>> >>> > 5.6 -
>>>>> >>> > rgmanager 2.0.52-9 )
>>>>> >>> >
>>>>> >>> >
>>>>> >>> >
>>>>> >>> > I can't make it work.
>>>>> >>> >
>>>>> >>> >
>>>>> >>> >
>>>>> >>> > lvm.conf- locking_type=3
>>>>> >>> >
>>>>> >>> > clvmd work
>>>>> >>> >
>>>>> >>> > Its failed saying HA-LVM is not configured correctly.
>>>>> >>> >
>>>>> >>> > The manual said that we should run "lvchange -a n lvxx" edit the
>>>>> >>> > cluster.conf & start the service.
>>>>> >>> >
>>>>> >>> >
>>>>> >>> >
>>>>> >>> > But From lvm.conf :
>>>>> >>> >
>>>>> >>> >
>>>>> >>> >
>>>>> >>> > case $1 in
>>>>> >>> >
>>>>> >>> > start)
>>>>> >>> >
>>>>> >>> >         if ! [[ $(vgs -o attr --noheadings $OCF_RESKEY_vg_name)
>>>>> =~
>>>>> >>> > .....c
>>>>> >>> > ]]; then
>>>>> >>> >
>>>>> >>> >                 ha_lvm_proper_setup_check || exit 1
>>>>> >>> >
>>>>> >>> >
>>>>> >>> >
>>>>> >>> > If the vg is not taged as cluster than the ha_lvm is looking for
>>>>> >>> > volume_list
>>>>> >>> > in lvm.conf.
>>>>> >>> >
>>>>> >>> >
>>>>> >>> >
>>>>> >>> > I am confused- Does the VG should taged as cluster ??  ( BTW -
>>>>> the old
>>>>> >>> > fashion HA-LVM is worked with no problems )
>>>>> >>> >
>>>>> >>> > redhat instructions :
>>>>> >>> >
>>>>> >>> > To set up HA LVM Failover (using the preferred CLVM variant),
>>>>> perform
>>>>> >>> > the
>>>>> >>> > following steps:
>>>>> >>> >
>>>>> >>> >
>>>>> >>> >
>>>>> >>> > 1. Ensure that the parameter locking_type in the global section
>>>>> >>> > of /etc/lvm/lvm.conf is set to the value '3', that all the
>>>>> necessary
>>>>> >>> > LVM
>>>>> >>> > cluster packages are installed, and the necessary daemons are
>>>>> started
>>>>> >>> > (like
>>>>> >>> > 'clvmd' and the cluster mirror log daemon - if necessary).
>>>>> >>> >
>>>>> >>> >
>>>>> >>> >
>>>>> >>> > 2. Create the logical volume and filesystem using standard LVM2
>>>>> and
>>>>> >>> > file
>>>>> >>> > system commands. For example:
>>>>> >>> >
>>>>> >>> > # pvcreate /dev/sd[cde]1
>>>>> >>> >
>>>>> >>> >  # vgcreate <volume group name> /dev/sd[cde]1
>>>>> >>> >
>>>>> >>> >  # lvcreate -L 10G -n <logical volume name> <volume group name>
>>>>> >>> >
>>>>> >>> >  # mkfs.ext3 /dev/<volume group name>/<logical volume name>
>>>>> >>> >
>>>>> >>> >  # lvchange -an <volume group name>/<logical volume name>
>>>>> >>> >
>>>>> >>> >
>>>>> >>> >
>>>>> >>> > 3. Edit /etc/cluster/cluster.conf to include the newly created
>>>>> logical
>>>>> >>> > volume as a resource in one of your services. Alternatively,
>>>>> >>> > configuration
>>>>> >>> > tools such as Conga or system-config-cluster may be used to
>>>>> create
>>>>> >>> > these
>>>>> >>> > entries.  Below is a sample resource manager section
>>>>> >>> > from /etc/cluster/cluster.conf:
>>>>> >>> >
>>>>> >>> >
>>>>> >>> >
>>>>> >>> > <rm>      <failoverdomains>        <failoverdomain name="FD"
>>>>> >>> > ordered="1"
>>>>> >>> > restricted="0">           <failoverdomainnode name="neo-01"
>>>>> >>> > priority="1"/>
>>>>> >>> >           <failoverdomainnode name="neo-02" priority="2"/>
>>>>> >>> > </failoverdomain>    </failoverdomains>    <resources>
>>>>> <lvm
>>>>> >>> > name="lvm" vg_name="shared_vg" lv_name="ha-lv"/>        <fs
>>>>> name="FS"
>>>>> >>> > device="/dev/shared_vg/ha-lv" force_fsck="0" force_unmount="1"
>>>>> >>> > fsid="64050"
>>>>> >>> > fstype="ext3" mountpoint="/mnt" options="" self_fence="0"/>
>>>>> >>> > </resources>
>>>>> >>> >    <service autostart="1" domain="FD" name="serv"
>>>>> recovery="relocate">
>>>>> >>> >        <lvm ref="lvm"/>        <fs ref="FS"/>    </service> </rm>
>>>>> >>> >
>>>>> >>> >
>>>>> >>> >
>>>>> >>> > Regards
>>>>> >>> >
>>>>> >>> > Shalom.
>>>>> >>> >
>>>>> >>> >
>>>>> >>> >
>>>>> >>> > --
>>>>> >>> > Linux-cluster mailing list
>>>>> >>> > Linux-cluster at redhat.com
>>>>> >>> > https://www.redhat.com/mailman/listinfo/linux-cluster
>>>>> >>> >
>>>>> >>>
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