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@xxxxxxxxx> 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@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 / Telegram >> >> Skype: 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 >>>> >>> >>> ________ >>> >>> >>> >>> Community Meeting Calendar: >>> >>> Schedule - >>> Every 2nd and 4th Tuesday at 14:30 IST / 09:00 UTC >>> Bridge: https://bluejeans.com/441850968 >>> >>> Gluster-users mailing >listGluster-users@gluster.orghttps://lists.gluster.org/mailman/listinfo/gluster-users >>> >>> >>> -- >>> Alvin Starr || land: (647)478-6285 >>> Netvel Inc. || Cell: >(416)806-0133alvin@xxxxxxxxxx || >>> >>> >>> ________ >>> >>> >>> >>> Community Meeting Calendar: >>> >>> Schedule - >>> Every 2nd and 4th Tuesday at 14:30 IST / 09:00 UTC >>> Bridge: https://bluejeans.com/441850968 >>> >>> Gluster-users mailing list >>> Gluster-users@xxxxxxxxxxx >>> https://lists.gluster.org/mailman/listinfo/gluster-users >>> >> ________ Community Meeting Calendar: Schedule - Every 2nd and 4th Tuesday at 14:30 IST / 09:00 UTC Bridge: https://bluejeans.com/441850968 Gluster-users mailing list Gluster-users@xxxxxxxxxxx https://lists.gluster.org/mailman/listinfo/gluster-users
