It's almost worth filing a bugreport for that.
Surely in the case of multiple backing devices, if you don't specify which
one, the default should be *all*, not the *first*.
I bet every single person who ever resizes a multiple-backing-device btrfs
will have hit this issue.
On Sat, 19 Sep 2015 at 18:43 James Harper <james(a)ejbdigital.com.au> wrote:
On Wed, 16 Sep 2015 08:56:04 PM James Harper wrote:
I've tried running a btrfs resize but it
hasn't changed anything.
What was the exact resize command you used?
The docs say:
# btrfs filesystem resize amount /mount-point
So I said:
btrfs filesystem resize max /
and Linux says:
Resize '/' of 'max'
Which doesn't really make any sense...
Sorted. The special sauce was to specify the device id, so:
# btrfs filesystem show /
Label: none uuid: 3826b465-0224-41df-9e1e-182d5eb68904
Total devices 4 FS bytes used 5.15TiB
devid 1 size 2.73TiB used 2.73TiB path /dev/sda3
devid 2 size 2.73TiB used 2.73TiB path /dev/sdb3
devid 3 size 2.73TiB used 2.73TiB path /dev/sdc3
devid 4 size 2.73TiB used 2.73TiB path /dev/sde3
# btrfs filesystem resize 4:max /
Resize '/' of '4:max'
# btrfs filesystem show /
Label: none uuid: 3826b465-0224-41df-9e1e-182d5eb68904
Total devices 4 FS bytes used 5.15TiB
devid 1 size 2.73TiB used 2.73TiB path /dev/sda3
devid 2 size 2.73TiB used 2.73TiB path /dev/sdb3
devid 3 size 2.73TiB used 2.73TiB path /dev/sdc3
devid 4 size 5.46TiB used 2.73TiB path /dev/sde3
w00t!
James
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