Well... LVM doesn't do the job that I need...
But I found this article https://www.gonscak.sk/?p=201 which makes the way....
Thanks for all the help and comments about this.... Cheers.
---
Gilberto Nunes Ferreira
(47) 3025-5907
(47) 99676-7530 - Whatsapp / Telegram
Skype: gilberto.nunes36
Em qui., 30 de jul. de 2020 às 10:25, Gilberto Nunes <gilberto.nunes32@xxxxxxxxx> escreveu:
But I will give it a try in the lvm mirroring process.... Thanks---Gilberto Nunes Ferreira(47) 3025-5907(47) 99676-7530 - Whatsapp / TelegramSkype: gilberto.nunes36
Em qui., 30 de jul. de 2020 às 10:23, Gilberto Nunes <gilberto.nunes32@xxxxxxxxx> 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 / TelegramSkype: gilberto.nunes36
Em qui., 30 de jul. de 2020 às 10:18, Alvin Starr <alvin@xxxxxxxxxx> 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 às 02:05, Strahil Nikolov <hunter86_bg@xxxxxxxxx> escreveu:
LVM allows creating/converting striped/mirrored LVs without any dowtime and it's using the md module.
Best Regards,
Strahil Nikolov
На 28 юли 2020 г. 22:43:39 GMT+03:00, Gilberto Nunes <gilberto.nunes32@xxxxxxxxx> написа:
>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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