Mounted /mnt folder but it is readonly, why?

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1

Hello,

I used unRaid to create a drive pool which is mapped to the folder /mnt/nas-backup/ on my unRaid machine. I want to use Nextcloud to create backups to this folder from my NAS, so i mounted it in my Nextcloud container like this:

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But for some reason inside Nextcloud it is readonly, and i don’t understand why:
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Also inside the Nextcloud UI i get errors when creating a file, but reading is fine.

Nextcloud version (eg, 29.0.5): 27.1.4
Operating system and version (eg, Ubuntu 29.04): unRaid 6.12.5
Apache or nginx version (eg, Apache 2.4.25): How do i find this?
PHP version (eg, 8.3): 8.2.13

How do i fix diagnose/this?

2

I have seen such problems more often on removable storage, when it wasn’t properly unmounted before disconnecting it. In such cases, it often mounts as read only and it helps to run file system check (fsck) on this partition.

If it happens more often, I’d check a bit more in details, if the partitions are not unmounted properly, or if the hard drive is starting to show more and more signs of failure.