Yes! But still with mdadm if you lose 1 disk and reboot the server, the system crashes. But with ZFS there's no crash. --- Gilberto Nunes Ferreira (47) 3025-5907 (47) 99676-7530 - Whatsapp / Telegram Skype: gilberto.nunes36 Em qui., 30 de jul. de 2020 ?s 09:55, Strahil Nikolov <hunter86_bg at yahoo.com> escreveu:> I guess there is no automatic hot-spare replacement in LVM, but > mdadm has that functionality. > > Best Regards, > Strahil Nikolov > > > ?? 30 ??? 2020 ?. 15:39:18 GMT+03:00, Gilberto Nunes < > gilberto.nunes32 at gmail.com> ??????: > >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 > >> >-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.gluster.org/pipermail/gluster-users/attachments/20200730/8732dcdb/attachment.html>
I meant, if you power off the server, pull off 1 disk, and then power on we get system errors.... --- Gilberto Nunes Ferreira (47) 3025-5907 (47) 99676-7530 - Whatsapp / Telegram Skype: gilberto.nunes36 Em qui., 30 de jul. de 2020 ?s 09:59, Gilberto Nunes < gilberto.nunes32 at gmail.com> escreveu:> Yes! But still with mdadm if you lose 1 disk and reboot the server, the > system crashes. > But with ZFS there's no crash. > > --- > Gilberto Nunes Ferreira > > (47) 3025-5907 > (47) 99676-7530 - Whatsapp / Telegram > > Skype: gilberto.nunes36 > > > > > > Em qui., 30 de jul. de 2020 ?s 09:55, Strahil Nikolov < > hunter86_bg at yahoo.com> escreveu: > >> I guess there is no automatic hot-spare replacement in LVM, but >> mdadm has that functionality. >> >> Best Regards, >> Strahil Nikolov >> >> >> ?? 30 ??? 2020 ?. 15:39:18 GMT+03:00, Gilberto Nunes < >> gilberto.nunes32 at gmail.com> ??????: >> >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 >> >> >> >-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.gluster.org/pipermail/gluster-users/attachments/20200730/578d1281/attachment.html>
If it crashes - that's a bug and worth checking. What OS do you use ? Best Regards, Strahil Nikolov ?? 30 ??? 2020 ?. 15:59:57 GMT+03:00, Gilberto Nunes <gilberto.nunes32 at gmail.com> ??????:>Yes! But still with mdadm if you lose 1 disk and reboot the server, the >system crashes. >But with ZFS there's no crash. > >--- >Gilberto Nunes Ferreira > >(47) 3025-5907 >(47) 99676-7530 - Whatsapp / Telegram > >Skype: gilberto.nunes36 > > > > > >Em qui., 30 de jul. de 2020 ?s 09:55, Strahil Nikolov ><hunter86_bg at yahoo.com> >escreveu: > >> I guess there is no automatic hot-spare replacement in LVM, but >> mdadm has that functionality. >> >> Best Regards, >> Strahil Nikolov >> >> >> ?? 30 ??? 2020 ?. 15:39:18 GMT+03:00, Gilberto Nunes < >> gilberto.nunes32 at gmail.com> ??????: >> >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 >> >> >>