[dm-devel] Kernel error at a LVM snapshot creation

[Dmitrij Gusev]

Hello.

Please find answers below.
Thank you.
Dmitrij

On 2019-09-02 11:32, Zdenek Kabelac wrote:
> Dne 02. 09. 19 v 3:04 Dmitrij Gusev napsal(a):
>> Hello.
>>
>> I get a kernel error every time I create LVM snapshot - at the 
>> creation and at boot time, though the snapshot itself is working 
>> properly.
>>
>> Linux nexus 4.19.69 #2 SMP Thu Aug 29 16:33:35 CDT 2019 x86_64 
>> Intel(R) Xeon(R) E-2174G CPU @ 3.80GHz GenuineIntel GNU/Linux
>
> Hi
>
>
> This is likely not a kernel error.
>
> In which way are you creating your snapshot ?
> Seems like it's made read-only ?

Yes, I create read-only snapshot in this case.

cmd line: lvcreate -pr --size $size --snapshot -n $snap $lv $pv

>
> What version of lvm2 are you using ?
> (there used to be bug when creating COW as read-only device)

I use lvm2 format.

LVM utility version: lvm2-2.02.154 (Slackware 14.2).

>
> Regard
>
> Zdenek