[Gluster-users] GlusterFS over multiples HDD

[Strahil Nikolov]

Keep in mind that if you use each disk as a separate brick, use  replica 3 volumes.

Also,  mdadm  allows you to specify a hot spare,  so in case of disk failure it will automatically kick in and replace the failed drive.

I'm not sure if LVM has that option,  but as it relies  on the same mechanism mdadm is  using -> it should be possible.

Best Regards,
Strahil Nikolov

На 29 юли 2020 г. 0:10:44 GMT+03:00, Darrell Budic <budic at onholyground.com> написа:
>ZFS isn’t that resource intensive, although it does like RAM.
>
>But why not just add additional bricks? Gluster is kind of built to use
>disks as bricks, and rely on gluster replication to provide redundancy
>in the data. Either replication or distribute-replication can provide
>protection against disk failures.
>
>> On Jul 28, 2020, at 3:27 PM, Gilberto Nunes
><gilberto.nunes32 at gmail.com> wrote:
>> 
>> But still, have some doubt how LVM will handle in case of disk
>failure!
>> Or even mdadm.
>> Both need intervention when one or more disks die!
>> What I need is something like ZFS but that uses less resources...
>> 
>> Thanks any way
>> 
>> 
>> 
>> ---
>> Gilberto Nunes Ferreira
>> 
>> 
>> 
>> 
>> Em ter., 28 de jul. de 2020 às 17:16, Gilberto Nunes
><gilberto.nunes32 at gmail.com <mailto:gilberto.nunes32 at gmail.com>>
>escreveu:
>> Good to know that...
>> Thanks
>> ---
>> Gilberto Nunes Ferreira
>> 
>> 
>> 
>> 
>> Em ter., 28 de jul. de 2020 às 17:08, Alvin Starr <alvin at netvel.net
><mailto:alvin at netvel.net>> escreveu:
>> Having just been burnt by BTRFS I would stick with XFS and
>LVM/others.
>> 
>> LVM will do disk replication or raid1. I do not believe that
>raid3,4,5,6.. is supported.
>> mdadm does support all the various raid modes and I have used it
>quite reliably for years.
>> You may want to look at the raid456 write-journal but that will
>require an SSD or NVME deivce to be used effectively.
>> 
>> 
>> On 7/28/20 3:43 PM, Gilberto Nunes wrote:
>>> 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)806-0133
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