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Forum Discussion
volume scan and quotas in OS6
I bought an RN314 last week which I immediately upgraded to OS V6.2.2. I noticed that the "perform volume scan" and "check and fix quotas on next reboot" options are missing from the RESTART command (as are present on my NV+ running 4.1.14). Am I just unable to locate these options (the new GUI is not intuitive; it is very hard to know what are clickable ICONS and what are not), or are they totally missing? Perhaps this has something to do with Btrfs (although, btrfs.wiki.kernel.org seems to imply that quotas and Btrfsck are both available in Btrfs).
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- We don't use BTRFS quotas at this time.
As for a volume scan that is rarely needed with BTRFS. - Do you know if quotas will be implemented in the future?
Can you expound upon why volume scans are rarely needed in Btrfs (vs. ext3)? - Quotas have been requested before. We will have to wait and see.
As for the other question I'm not sure.
I do know at least on 6.2.x if an OS re-install is done then a filesystem check of the 4GB root partition is done.
For the data volume it would be advisable to ensure you have an up to date backup. BTRFS has a lot of great features to provide additional protection for your data compared with EXT4, but you are still vulnerable to things such as multiple disk failures, fire, flood and theft. - Where does the root partition reside? Is it on the same four hard drives that come with the RN314? If so, what file system does the root partition use, and what (if any) RAID configuration is it stored on?
- The root partition is 4GB. It resides on your hard disks. On NAS units with Intel CPUs such as the 314 we use BTRFS for the OS partition.
It does store backups of the RAID configuration which can be vital for data recovery in rare situations where e.g. multiple disks have issues.
When we partition the disks we create a partition for the OS, a partition for swap and partition(s) for your data volume(s). - I see /dev/md0 is the root partition. It appears to be RAID1 (mdadm --detail /dev/md0). Does this mean it exists as a mirror on every one of my four drives?
Also, I see a /dev/md1 RAID6 device which is not mounted. Any ideas why this would be kicking around? (I found some forum references to it being swap, but since it is not mounted, perhaps this is no longer the case)? - /dev/md0 is the root partition. Yes.
/dev/md1 is used for swap. It is quite a different thing to your root partition or your data volume. Also the swap is only used when it is needed. The RAM Is normally mostly in use, but the large amount used for caching is freed up as needed.
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