On 22/02/2021 21:07, Steven Davies wrote:
[+CC Anand ]
> Booted my system with kernel 5.11.0 vanilla with the first time and received
> this:
>
> BTRFS info (device nvme0n1p2): has skinny extents
> BTRFS error (device nvme0n1p2): device total_bytes should be at most
> 964757028864 but found
> 964770336768
> BTRFS error (device nvme0n1p2): failed to read chunk tree: -22
>
> Booting with 5.10.12 has no issues.
>
> # btrfs filesystem usage /
> Overall:
> Device size: 898.51GiB
> Device allocated: 620.06GiB
> Device unallocated: 278.45GiB
> Device missing: 0.00B
> Used: 616.58GiB
> Free (estimated): 279.94GiB (min: 140.72GiB)
> Data ratio: 1.00
> Metadata ratio: 2.00
> Global reserve: 512.00MiB (used: 0.00B)
>
> Data,single: Size:568.00GiB, Used:566.51GiB (99.74%)
> /dev/nvme0n1p2 568.00GiB
>
> Metadata,DUP: Size:26.00GiB, Used:25.03GiB (96.29%)
> /dev/nvme0n1p2 52.00GiB
>
> System,DUP: Size:32.00MiB, Used:80.00KiB (0.24%)
> /dev/nvme0n1p2 64.00MiB
>
> Unallocated:
> /dev/nvme0n1p2 278.45GiB
>
> # parted -l
> Model: Sabrent Rocket Q (nvme)
> Disk /dev/nvme0n1: 1000GB
> Sector size (logical/physical): 512B/512B
> Partition Table: gpt
> Disk Flags:
>
> Number Start End Size File system Name Flags
> 1 1049kB 1075MB 1074MB fat32 boot, esp
> 2 1075MB 966GB 965GB btrfs
> 3 966GB 1000GB 34.4GB linux-swap(v1) swap
>
> What has changed in 5.11 which might cause this?
>
>
This line:
> BTRFS info (device nvme0n1p2): has skinny extents
> BTRFS error (device nvme0n1p2): device total_bytes should be at most
> 964757028864 but found
> 964770336768
> BTRFS error (device nvme0n1p2): failed to read chunk tree: -22
comes from 3a160a933111 ("btrfs: drop never met disk total bytes check in
verify_one_dev_extent")
which went into v5.11-rc1.
IIUIC the device item's total_bytes and the block device inode's size are off
by 12M, so the check
introduced in the above commit refuses to mount the FS.
Anand any idea?
Byte,
Johannes
