<div dir="ltr">I am using Legacy... But I am using Virtualbox in my labs... Perhaps this is the problem...<br>I don't do that in real hardware. But with spare disk (2 + 1) in mdadm it's fine.<div><br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div>---</div><div><div><div>Gilberto Nunes Ferreira</div></div><div><span style="font-size:12.8px"><br></span></div><div><span style="font-size:12.8px">(47) 3025-5907</span><br></div><div><font size="4"><b></b></font></div><div><span style="font-size:12.8px">(47) 99676-7530 - Whatsapp / Telegram</span><br></div><div><p style="font-size:12.8px;margin:0px"></p><p style="font-size:12.8px;margin:0px">Skype: gilberto.nunes36</p><p style="font-size:12.8px;margin:0px"><br></p></div></div><div><br></div></div></div></div></div></div></div></div></div></div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Em qui., 30 de jul. de 2020 às 12:16, Strahil Nikolov <<a href="mailto:hunter86_bg@yahoo.com">hunter86_bg@yahoo.com</a>> escreveu:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">The crash with failed mdadm disk is not normal. We need to check it out.<br>
<br>
Are you using Legacy or UEFI ?<br>
<br>
Best Regards,<br>
Strahil Nikolov<br>
<br>
На 30 юли 2020 г. 16:25:47 GMT+03:00, Gilberto Nunes <<a href="mailto:gilberto.nunes32@gmail.com" target="_blank">gilberto.nunes32@gmail.com</a>> написа:<br>
>But I will give it a try in the lvm mirroring process.... Thanks<br>
>---<br>
>Gilberto Nunes Ferreira<br>
><br>
>(47) 3025-5907<br>
>(47) 99676-7530 - Whatsapp / Telegram<br>
><br>
>Skype: gilberto.nunes36<br>
><br>
><br>
><br>
><br>
><br>
>Em qui., 30 de jul. de 2020 às 10:23, Gilberto Nunes <<br>
><a href="mailto:gilberto.nunes32@gmail.com" target="_blank">gilberto.nunes32@gmail.com</a>> escreveu:<br>
><br>
>> Well, actually I am not concerned ONLY about mirroring the data, but<br>
>with<br>
>> reliability on it.<br>
>> Here during my lab tests I notice if I pull off a disk and then power<br>
>on<br>
>> the server, the LVM crashes...<br>
>> On the other hand, with ZFS even in degraded state the system booted<br>
>> normally.<br>
>> The same happens with mdadm. That's the point.<br>
>><br>
>> ---<br>
>> Gilberto Nunes Ferreira<br>
>><br>
>> (47) 3025-5907<br>
>> (47) 99676-7530 - Whatsapp / Telegram<br>
>><br>
>> Skype: gilberto.nunes36<br>
>><br>
>><br>
>><br>
>><br>
>><br>
>> Em qui., 30 de jul. de 2020 às 10:18, Alvin Starr <<a href="mailto:alvin@netvel.net" target="_blank">alvin@netvel.net</a>><br>
>> escreveu:<br>
>><br>
>>> LVM supports mirroring or raid1.<br>
>>> So to create a raid1 you would do something like "lvcreate -n<br>
>raidvol -L<br>
>>> 1T --mirrors 1 /dev/bigvg"<br>
>>> You can add a mirror to an existing logical volume using lvconvert <br>
>with<br>
>>> something like "lvconvert --mirrors +1 bigvg/unmirroredlv"<br>
>>><br>
>>> But other than simple mirroring you will need mdadm.<br>
>>><br>
>>><br>
>>><br>
>>> On 7/30/20 8:39 AM, Gilberto Nunes wrote:<br>
>>><br>
>>> Doing some research and the chvg command, which is responsable for<br>
>create<br>
>>> hotspare disks in LVM is available only in AIX!<br>
>>> I have a Debian Buster box and there is no such command chvg.<br>
>Correct me<br>
>>> if I am wrong....<br>
>>> ---<br>
>>> Gilberto Nunes Ferreira<br>
>>><br>
>>> (47) 3025-5907<br>
>>> (47) 99676-7530 - Whatsapp / Telegram<br>
>>><br>
>>> Skype: gilberto.nunes36<br>
>>><br>
>>><br>
>>><br>
>>><br>
>>><br>
>>> Em qui., 30 de jul. de 2020 às 02:05, Strahil Nikolov <<br>
>>> <a href="mailto:hunter86_bg@yahoo.com" target="_blank">hunter86_bg@yahoo.com</a>> escreveu:<br>
>>><br>
>>>> LVM allows creating/converting striped/mirrored LVs without any<br>
>dowtime<br>
>>>> and it's using the md module.<br>
>>>><br>
>>>> Best Regards,<br>
>>>> Strahil Nikolov<br>
>>>><br>
>>>> На 28 юли 2020 г. 22:43:39 GMT+03:00, Gilberto Nunes <<br>
>>>> <a href="mailto:gilberto.nunes32@gmail.com" target="_blank">gilberto.nunes32@gmail.com</a>> написа:<br>
>>>> >Hi there....<br>
>>>> ><br>
>>>> >'till now, I am using glusterfs over XFS and so far so good.<br>
>>>> >Using LVM too....<br>
>>>> >Unfortunately, there is no way with XFS to merge two or more HDD,<br>
>in<br>
>>>> >order<br>
>>>> >to use more than one HDD, like RAID1 or RAID5.<br>
>>>> >My primary goal is to use two server with GlusterFS on top of<br>
>multiples<br>
>>>> >HDDs for qemu images.<br>
>>>> >I have think about BTRFS or mdadm.<br>
>>>> >Anybody has some experience on this?<br>
>>>> ><br>
>>>> >Thanks a lot<br>
>>>> ><br>
>>>> >---<br>
>>>> >Gilberto Nunes Ferreira<br>
>>>><br>
>>><br>
>>> ________<br>
>>><br>
>>><br>
>>><br>
>>> Community Meeting Calendar:<br>
>>><br>
>>> Schedule -<br>
>>> Every 2nd and 4th Tuesday at 14:30 IST / 09:00 UTC<br>
>>> Bridge: <a href="https://bluejeans.com/441850968" rel="noreferrer" target="_blank">https://bluejeans.com/441850968</a><br>
>>><br>
>>> Gluster-users mailing<br>
>listGluster-users@gluster.orghttps://<a href="http://lists.gluster.org/mailman/listinfo/gluster-users" rel="noreferrer" target="_blank">lists.gluster.org/mailman/listinfo/gluster-users</a><br>
>>><br>
>>><br>
>>> --<br>
>>> Alvin Starr || land: (647)478-6285<br>
>>> Netvel Inc. || Cell: <br>
>(416)<a href="mailto:806-0133alvin@netvel.net" target="_blank">806-0133alvin@netvel.net</a> ||<br>
>>><br>
>>><br>
>>> ________<br>
>>><br>
>>><br>
>>><br>
>>> Community Meeting Calendar:<br>
>>><br>
>>> Schedule -<br>
>>> Every 2nd and 4th Tuesday at 14:30 IST / 09:00 UTC<br>
>>> Bridge: <a href="https://bluejeans.com/441850968" rel="noreferrer" target="_blank">https://bluejeans.com/441850968</a><br>
>>><br>
>>> Gluster-users mailing list<br>
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>>><br>
>><br>
</blockquote></div>