Re: Cannot resize filesystem: not enough free space

["Jakob Schöttl" <jschoett@gmail.com>]

Hugo Mills <hugo@carfax.org.uk> writes:

> On Sun, Jan 24, 2021 at 07:23:21PM +0100, Jakob Schöttl wrote:
>> 
>> Help please, increasing the filesystem size doesn't work.
>> 
>> When mounting my btrfs filesystem, I had errors saying, "no 
>> space left
>> on device". Now I managed to mount the filesystem with -o 
>> skip_balance but:
>> 
>> # btrfs fi df /mnt
>> Data, RAID1: total=147.04GiB, used=147.02GiB
>> System, RAID1: total=8.00MiB, used=48.00KiB
>> Metadata, RAID1: total=1.00GiB, used=458.84MiB
>> GlobalReserve, single: total=181.53MiB, used=0.00B
>
>    Can you show the output of "sudo btrfs fi show" as well?
>
>    Hugo.
>  

Thanks, Hugo, for the quick response.

# btrfs fi show /mnt/
Label: 'data'  uuid: fc991007-6ef3-4c2c-9ca7-b4d637fccafb
        Total devices 2 FS bytes used 148.43GiB
        devid    1 size 232.89GiB used 149.05GiB path /dev/sda
        devid    2 size 149.05GiB used 149.05GiB path /dev/sdb

Oh, now I see! Resize only worked for one sda!

# btrfs fi resize 1:max /mnt/
# btrfs fi resize 2:max /mnt/
# btrfs fi show /mnt/
Label: 'data'  uuid: fc991007-6ef3-4c2c-9ca7-b4d637fccafb
        Total devices 2 FS bytes used 150.05GiB
        devid    1 size 232.89GiB used 151.05GiB path /dev/sda
        devid    2 size 465.76GiB used 151.05GiB path /dev/sdb

Now it works. Thank you!

>> It is full and resize doesn't work although both block devices 
>> sda and
>> sdb have more 250 GB and more nominal capacity (I don't have 
>> partitions,
>> btrfs is directly on sda and sdb):
>> 
>> # fdisk -l /dev/sd{a,b}*
>> Disk /dev/sda: 232.89 GiB, 250059350016 bytes, 488397168 
>> sectors
>> [...]
>> Disk /dev/sdb: 465.76 GiB, 500107862016 bytes, 976773168 
>> sectors
>> [...]
>> 
>> I tried:
>> 
>> # btrfs fi resize 230G /mnt
>> runs without errors but has no effect
>> 
>> # btrfs fi resize max /mnt
>> runs without errors but has no effect
>> 
>> # btrfs fi resize +1G /mnt
>> ERROR: unable to resize '/mnt': no enough free space
>> 
>> Any ideas? Thank you!


-- 
Jakob Schöttl
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E-mail: jschoett@gmail.com
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