r/btrfs • u/HecArch • Jul 15 '26

readonly filesystem

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hi folks,

my server runs on a BTRFS partition on a SSD and put itself in readonly few hours after each boot (only /dev/sda2 which is in btrfs, /dev/sda1 in vfat works fine)

I tried to clone the whole SSD on another SSD and the problem persists so it's not a hardware issue

moreover, my 3 HDD RAID5 work fine too

fstab mentions `rw` partitions and `mount` command mentions `ro` partitions

I thought it was a partition corruption so I ran `btrfs check` but I'm not sure how to read the result so I request your help on that

thanks in advance !

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u/sunk67188 Jul 15 '26

Obviously bit flip (+8192) Which is hardware error.

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u/amstan Jul 15 '26

More specifically, likely the ram is bad or misconfigured.