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  • Risks when expanding RAID5?

    tsch - - General

    Post

    Quote from ryecoaaron: “I would never add two disks to a software raid 5 array at the same time. Quote from tsch: “It was not my goal to start a discussion "RAID vs Backup" in this thread ” We bring that up so that other people reading this thread don't think RAID is backup or really a safe option (I've seen too many unrecoverable arrays)... ” Thanks for your confirmation regarding 1 hdd vs 2 hdds at the same time. You and tkaiser are right to mention that RAID5 is not a backup. I had a lot of d…

  • Risks when expanding RAID5?

    tsch - - General

    Post

    Thanks for your reply. I can understand your point of view but for me the "anachronistic" RAID5 is far better/safer than using JBOD's and fits my needs concerning safety. The failure of one hdd is much probable than two ore more hdd's failing at the same time. An yes, you're absolutely right, RAID is no Backup. But I personally don't need to backup everything saved on my NAS. It was not my goal to start a discussion "RAID vs Backup" in this thread.

  • Risks when expanding RAID5?

    tsch - - General

    Post

    Hello, maybe you contribute to this thread by describing experiences you've made (or want to avoid) when expanding a RAID5. Thinking about risks expanding a RAID5, the following dangers come to my mind: RAID5 is your data's lifesaver when one hdd becomes defective. => When adding more than one hdd to an existing RAID5 at a time there is a higher risk while reshaping (adding the new hdd's to the RAID5). This can be avoided just adding one hdd at a time. Disadvantage of this process is the time ne…

  • Hello, maybe I'm the only one having this issue, but having read some threads, I doubt this. I startet with a RAID-5 consisting of 3x4TB hdds and everything was fine. After some days I added another 4TB hdd and expanded the RAID and after doing this I expanded the filesystem. Because nothing happened expanding the filesystem I took a look and found that the new hdd was configured as hot spare. Could you please give the user the option to choose between adding the new hdd(s) as hot spare or using…

  • Hello, is expanind an existing RAID5 (4x4TB) with 2 disks faster than expanding with the first disk, resyncing an after resync adding the second disk? Which method is safer? I had an issue adding the fourth disk to the RAID-5 having OMV3 adding the disk as spare. How can I avoid this? Thanks a lot for your help. Kind regards tsch

  • Du meinst damit das anklicken aller angebotenen Updates entspricht dem Konsolenbefehl omv -update?

  • Kann ich den auch irgendwo per Webkonsole eingeben oder muss ich per putty verbinden?

  • Hallo, mein OMV läuft sehr stabil. Sollte ich trotzdem aktuelle Updates einspielen? Welche sind sinnvoll oder kann ich einfach unter Aktualisierungsverwaltung alles anklicken und aktualisieren lassen? Wird es eigentlich ein Update auf 3.x geben oder ist eine Neuinstallation erforderlich? Vielen Dank für Eure Hilfe.

  • Ich antworte mir mal selbst: resize2fs /dev/md0 über putty/Kommandozeile lieferte das gewünschte Ergebnis. Wieso hat das nicht über die OMV-GUI funktioniert? Keinerlei Fehlermeldung, nichts.

  • Nach dem Einbau der 4. 3TB HDD und Erweiterung des RAID-5 (reshaping über Nacht erfolgreich) wollte ich nun das Dateisystem in der Göße ändern, damit die zusätzlichen 3TB auch nutzbar sind. Leider passiert nach Bestätigen mit "Ja" nichts. Es läuft auch kein Prozess an. Was kann ich tun? Gerne auch per putty/Kommandozeile. Vielen Dank für EUre Hilfe.

  • dumpe2fs -h /dev/md0 shows: root@OMV-INTEL:~# dumpe2fs -h /dev/md0 dumpe2fs 1.42.5 (29-Jul-2012) Filesystem volume name: <none> Last mounted on: /media/2602c91a-b241-40c7-87a1-3aadbe2155e7 Filesystem UUID: 2602c91a-b241-40c7-87a1-3aadbe2155e7 Filesystem magic number: 0xEF53 Filesystem revision #: 1 (dynamic) Filesystem features: has_journal ext_attr resize_inode dir_index filetype needs_recovery extent flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize Filesystem flags: si…

  • Just found a similar problem here: cant mount newly created RAID5 Array worked for me too. Should I test something or should be everything be OK now? Why do I have to: dd if=/dev/zero of=/dev/md0 bs=512 count=10000 mkfs.ext4 /dev/md0 after this mounting via GUI did the job? Is this a bug of OMV with my hardware?

  • Hello, I'm freaking out. No problem with 3 2.5" (Seagate 500GB) hdds on my Asrock H87M PRO 4 and building a raid-5. Now I wanted to upgrade and deleted the 2.5" raid. Installed 3 3.5" hdds (Seagate 3TB) and I can build the raid but can't build the filesystem afterwards. After buildung the raid automatically a new filesystem (EXT4) is created which can't be mounted. This does not happen when building the raid-5 with the 2.5" hdds. I have to manually build a filesystem and mount it. Abolutely perf…

  • Hallo, ein Plugin habe ich noch nicht gefunden und auch zu Fuß scheint es nicht möglich zu sein nur die Config von OMV zu sichern, um diese später auf dem gleichen oder ggfs. auf einen anderen System (Desaster Recovery) nach erneuter Installation wieder zurückzuspielen. Es ist mir klar, dass Plugins manuell nachinstalliert werden müßten (evtl. gibt es aber auch dafür eine Lösung). Für ensprechende Hinweise wäre ich Euch sehr dankbar. Eine Imageerstellung z.B. mit Clonezilla ist nicht mein Ziel, …