[Gluster-users] GlusterFS over multiples HDD

Gilberto Nunes gilberto.nunes32 at gmail.com
Thu Jul 30 15:17:49 UTC 2020


I am using Legacy... But I am using Virtualbox in my labs... Perhaps this
is the problem...
I don't do that in real hardware. But with spare disk (2 + 1) in mdadm it's
fine.

---
Gilberto Nunes Ferreira

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

Skype: gilberto.nunes36





Em qui., 30 de jul. de 2020 às 12:16, Strahil Nikolov <hunter86_bg at yahoo.com>
escreveu:

> The crash  with failed  mdadm disk is not normal. We need to check it out.
>
> Are  you using  Legacy or  UEFI  ?
>
> Best Regards,
> Strahil Nikolov
>
> На 30 юли 2020 г. 16:25:47 GMT+03:00, Gilberto Nunes <
> gilberto.nunes32 at gmail.com> написа:
> >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 às 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 às 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 às 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
> >>>>
> >>>> На 28 юли 2020 г. 22:43:39 GMT+03:00, Gilberto Nunes <
> >>>> gilberto.nunes32 at gmail.com> 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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> >>>
> >>>
> >>> --
> >>> Alvin Starr                   ||   land:  (647)478-6285
> >>> Netvel Inc.                   ||   Cell:
> >(416)806-0133alvin at netvel.net              ||
> >>>
> >>>
> >>> ________
> >>>
> >>>
> >>>
> >>> Community Meeting Calendar:
> >>>
> >>> Schedule -
> >>> Every 2nd and 4th Tuesday at 14:30 IST / 09:00 UTC
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> >>
>
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