[Gluster-users] GlusterFS over multiples HDD

Gilberto Nunes
Thu, 30 Jul 2020 13:25:47 -0000

But I will give it a try in the lvm mirroring process.... Thanks
---
Gilberto Nunes Ferreira

(47) 3025-5907
(47) 99676-7530 - Whatsapp / Telegram

Skype: gilberto.nunes36





Em qui., 30 de jul. de 2020 ?s 10:23, Gilberto Nunes <
gilberto.nunes32 at gmail.com> escreveu:

> Well, actually I am not concerned ONLY about mirroring the data, but with
> reliability on it.
> Here during my lab tests I notice if I pull off a disk and then power on
> the server, the LVM crashes...
> On the other hand, with ZFS even in degraded state the system booted
> normally.
> The same happens with mdadm. That's the point.
>
> ---
> Gilberto Nunes Ferreira
>
> (47) 3025-5907
> (47) 99676-7530 - Whatsapp / Telegram
>
> Skype: gilberto.nunes36
>
>
>
>
>
> Em qui., 30 de jul. de 2020 ?s 10:18, Alvin Starr <alvin at
netvel.net>
> escreveu:
>
>> LVM supports mirroring or raid1.
>> So to create a raid1 you would do something like "lvcreate -n
raidvol  -L
>> 1T --mirrors 1  /dev/bigvg"
>> You can add a mirror to an existing logical volume using lvconvert
with
>> something like "lvconvert --mirrors +1 bigvg/unmirroredlv"
>>
>> But other than simple mirroring you will need mdadm.
>>
>>
>>
>> On 7/30/20 8:39 AM, Gilberto Nunes wrote:
>>
>> Doing some research and the chvg command, which is responsable for
create
>> hotspare disks in LVM is available only in AIX!
>> I have a Debian Buster box and there is no such command chvg. Correct
me
>> if I am wrong....
>> ---
>> Gilberto Nunes Ferreira
>>
>> (47) 3025-5907
>> (47) 99676-7530 - Whatsapp / Telegram
>>
>> Skype: gilberto.nunes36
>>
>>
>>
>>
>>
>> Em qui., 30 de jul. de 2020 ?s 02:05, Strahil Nikolov <
>> hunter86_bg at yahoo.com> escreveu:
>>
>>> LVM allows creating/converting striped/mirrored LVs without any
dowtime
>>> and it's using the md module.
>>>
>>> Best Regards,
>>> Strahil Nikolov
>>>
>>> ?? 28 ??? 2020 ?. 22:43:39 GMT+03:00, Gilberto Nunes <
>>> gilberto.nunes32 at gmail.com> ??????:
>>> >Hi there....
>>> >
>>> >'till now, I am using glusterfs over XFS and so far so
good.
>>> >Using LVM too....
>>> >Unfortunately, there is no way with XFS to merge two or more
HDD, in
>>> >order
>>> >to use more than one HDD, like RAID1 or RAID5.
>>> >My primary goal is to use two server with GlusterFS on top of
multiples
>>> >HDDs for qemu images.
>>> >I have think about BTRFS or mdadm.
>>> >Anybody has some experience on this?
>>> >
>>> >Thanks a lot
>>> >
>>> >---
>>> >Gilberto Nunes Ferreira
>>>
>>
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>> --
>> Alvin Starr                   ||   land:  (647)478-6285
>> Netvel Inc.                   ||   Cell:  (416)806-0133alvin at
netvel.net              ||
>>
>>
>> ________
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