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After some more research and try and error I've found some tips. First of all it seems a raid 5 works faster if there're more disks available. For the test I used 3 harddisk and now I'm building a raid 5 with 4 harddisks which will hopefully be faster. A friend of mine has a 5 disk raid 5 setup and is much faster then the 3 disk raid 5 of mine. also this ...


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I had the same problem. What I found strange was the numbering of the devices which was 0 and 2. I ended up with recreating the whole raid setup. mdadm --create --verbose /dev/md0 --level=1 --raid-devices=2 /dev/sda1 /dev/sdb1 Now the numbers are 0 and 1 again. (according to mdadm --detail /dev/md0) After that I modified my /etc/mdadm/mdadm.conf file a ...


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Gentoo on my home server boots from a single-drive Btrfs which I created like this (though the custom options should be irrelevant and the complete installation obviously required a lot more steps in between these relevant lines): mkfs.btrfs -f -s 4k -n 4k -O extref,skinny-metadata,no-holes /dev/sda grub-install /dev/sda grub-mkconfig -o /boot/grub/grub.cfg ...


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Turns out you can't create with ashift=12 in zfs-fuse: # zpool create -n -o ashift=12 test /dev/disk/by-id/scsi-SATA_...... property 'ashift' is not a valid pool property But it works with the one from github zfs+spl 0.6.5.x: # dd if=/dev/zero of=/tmp/testfile bs=1M count=64 # zpool create -o ashift=12 test /tmp/testfile # dd if=/dev/zero of=/tmp/...


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If you combined the RAID volume with a JBOD... you're screwed. RAID 1 is redundant sure... but when you add a JBOD on top of it... you basically make your redundancy un-redundant. Whatever was stored on the RAID 1 volume is probably in-tact... but all sectors on the remaining 3tb are gone. (Notice, I said Sectors... not files). From a logical-standpoint.....


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Alright, I figured it out with the help of this Trello link. In case anyone else wants to do this, here's the procedure. Procedure From a RAID1 array of two disks, one /dev/sda which is faulty and another /dev/sdc known-good: Disable auto-mounting of this array in /etc/fstab, reboot. Basically, we want btrfs to forget this array exists, as there's a bug ...


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Hmmm one answer too long the other too short. RST "raid" is mainly for use if you are dual-booting a workstation since Intel produces windows and Linux drivers and you can configure the raid in BIOS. You configure RAID, partition the virtual disk and can dual boot with both OS'es understanding the multiple partitions. mdam is for if the server is ...


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Resolution π•Žπ”Έβ„β„•π•€β„•π”Ύ: The instructions below delete your existing RAID setup and create a new md RAID 1 array with two entire block devices, /dev/sdc and /dev/sdd. Ensure that your kernel has the RAID 1 md module loaded with either of these commands: lsmod | grep 'raid1\s' grep 'Personalities : .*\[raid1\]' /proc/mdstat If you do not get an ...


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I had this problem on my Raspberry Pi 2 running Raspbian GNU/Linux 8 (jessie). I had a RAID array on /dev/sda1 and /dev/sdb1 which failed to assemble at boot. I had in my /etc/mdadm/mdadm.conf file the entry ARRAY /dev/md/0 metadata=1.2 UUID=53454954:4044eb66:9169d1ed:40905643 name=raspberrypi:0 (your numbers will be different; see other answers on how ...


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I actually asked this in the #freenas IRC channel, and they were able to answer my question. To answer my own question: no, you cannot add an additional drive to a RAID-Z1 array to make it into a RAID-Z2 array. The nor can you add additional drives to scale the array horizontally. The geometry of the array is set when you first build it. You can however, ...



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