david at davidcoulson
Oct 3, 2011, 9:19 AM
Post #4 of 4
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Re: Can't find LV from second node on a Primary/Primary DRBD Device
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You could try doing a vgexport then a vgimport. You probably need to
blow away your lvm cache too.
There are ways to make it work without clvmd, but you can't have the VG
imported on both hosts at the same time.
On 10/3/11 12:18 PM, markus [at] marcap wrote:
> Hi,
>
> thanks for the answer. No I don't use clustered LVM. I tried to do
> deactivating and activating from the second node (client01) but
> nothing changed:
>
> client01:~# vgscan
> Reading all physical volumes. This may take a while...
> Found volume group "pve" using metadata type lvm2
> Found volume group "replicated" using metadata type lvm2
> client01:~# vgchange -an
> Can't deactivate volume group "pve" with 4 open logical volume(s)
> client01:~# vgchange -an replicated
> 0 logical volume(s) in volume group "replicated" now active
> client01:~# vgscan
> Reading all physical volumes. This may take a while...
> Found volume group "pve" using metadata type lvm2
> Found volume group "replicated" using metadata type lvm2
> client01:~# vgchange -ay replicated
> 2 logical volume(s) in volume group "replicated" now active
> client01:~# lvdisplay
> output shows just local lv's
>
> ---------------------------------------
>
> If I do lvdisplay on the first node (client00) I see the local LV's
> and the DRBD-LV's:
> --- Logical volume ---
> LV Name /dev/replicated/vm-101-disk-1
> VG Name replicated
> LV UUID i7NM1a-heRf-ZufV-5pVJ-NsU8-0xHh-d2vALH
> LV Write Access read/write
> LV Status available
> # open 0
> LV Size 10.00 GB
> Current LE 2560
> Segments 1
> Allocation inherit
> Read ahead sectors auto
> - currently set to 256
> Block device 253:4
>
> --- Logical volume ---
> LV Name /dev/replicated/vm-104-disk-1
> VG Name replicated
> LV UUID eEdV1h-42uJ-GH56-o0f8-Nk2i-DaMm-G1er2X
> LV Write Access read/write
> LV Status available
> # open 0
> LV Size 20.00 GB
> Current LE 5120
> Segments 1
> Allocation inherit
> Read ahead sectors auto
> - currently set to 256
> Block device 253:5
>
> I think it should work without clustered LVM?
>
> Best regards,
> Markus
>
> Zitat von David Coulson <david [at] davidcoulson>:
>
>> Are you using clustered LVM? If not, you probably should be.
>>
>> You could try deactivating the VG then reactivating it and seeing if
>> the new primary sees the LV.
>>
>> On 10/3/11 6:02 AM, markus [at] marcap wrote:
>>> Dear all,
>>>
>>> I want to build an HA setup with virtual machines on a two hardware
>>> node setup. I already setup a nested LVM DRBD configuration. But
>>> from the second node I can't see the lv's from the drbd device;
>>> pvscan displays it.
>>>
>>> Has anybody an idea whats wrong with my setup? I think I need a
>>> primary/primary drbd device because if one hardware node fails I
>>> want to start the KVM container from the other one; therefore I need
>>> the latest data of the KVM container.
>>>
>>> Please find some logs below...
>>>
>>> Thanks a lot for your help in advance!
>>>
>>> Best regards,
>>> Markus
>>>
>>> Client00:
>>> ---------
>>> client00:~# lvscan
>>> ACTIVE '/dev/pve/swap' [15.00 GB] inherit
>>> ACTIVE '/dev/pve/root' [96.00 GB] inherit
>>> ACTIVE '/dev/pve/data' [1.32 TB] inherit
>>> ACTIVE '/dev/pve/r0' [60.00 GB] inherit
>>> ACTIVE '/dev/replicated/vm-101-disk-1' [10.00 GB] inherit
>>> client00:~# pvscan
>>> PV /dev/sda2 VG pve lvm2 [1.82 TB / 343.99 GB free]
>>> PV /dev/drbd0 VG replicated lvm2 [60.00 GB / 50.00 GB free]
>>> Total: 2 [1.88 TB] / in use: 2 [1.88 TB] / in no VG: 0 [0 ]
>>> client00:~# cat /proc/drbd
>>> version: 8.3.10 (api:88/proto:86-96)
>>> GIT-hash: 5c0b0469666682443d4785d90a2c603378f9017b build by
>>> phil [at] fat-tyr, 2011-01-28 12:17:35
>>> 0: cs:Connected ro:Primary/Primary ds:UpToDate/UpToDate C r-----
>>> ns:81968 nr:28 dw:28 dr:84752 al:0 bm:15 lo:0 pe:0 ua:0 ap:0 ep:1
>>> wo:b oos:0
>>>
>>> Client01:
>>> ---------
>>> client01:~# lvscan
>>> ACTIVE '/dev/pve/swap' [4.00 GB] inherit
>>> ACTIVE '/dev/pve/root' [96.00 GB] inherit
>>> ACTIVE '/dev/pve/data' [194.14 GB] inherit
>>> ACTIVE '/dev/pve/r0' [60.00 GB] inherit
>>> client01:~# pvscan
>>> PV /dev/sda2 VG pve lvm2 [698.13 GB / 343.99 GB free]
>>> PV /dev/drbd0 VG replicated lvm2 [60.00 GB / 50.00 GB free]
>>> Total: 2 [758.13 GB] / in use: 2 [758.13 GB] / in no VG: 0 [0 ]
>>> client01:~# cat /proc/drbd
>>> version: 8.3.10 (api:88/proto:86-96)
>>> GIT-hash: 5c0b0469666682443d4785d90a2c603378f9017b build by
>>> phil [at] fat-tyr, 2011-01-28 12:17:35
>>> 0: cs:Connected ro:Primary/Primary ds:UpToDate/UpToDate C r-----
>>> ns:28 nr:81968 dw:81948 dr:2096 al:2 bm:14 lo:0 pe:0 ua:0 ap:0
>>> ep:1 wo:b oos:0
>>> _______________________________________________
>>> drbd-user mailing list
>>> drbd-user [at] lists
>>> http://lists.linbit.com/mailman/listinfo/drbd-user
>>
>
>
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