Snapraid outofparity error

i was trying to set up snapraid for my config (3x 3 TB disks, 2 drives filled with approx 3,5 TB data). however when attempting an initial sync i am getting an outofparity error, complaining there is not enough space for parity. the snapraid config generated by omv looks like this. any idea what could be wrong?

# this file was automatically generated from
# openmediavault Erasmus 3.0.90
# and 'openmediavault-snapraid' 3.7.2


block_size 256
autosave 10
#####################################################################
# OMV-Name: Snapraid  Drive Label: Snapraid
parity /srv/dev-disk-by-label-Snapraid/snapraid.parity


#####################################################################
# OMV-Name: Data1  Drive Label: Data1
content /srv/dev-disk-by-label-Data1/snapraid.content
disk Data1 /srv/dev-disk-by-label-Data1


#####################################################################
# OMV-Name: Data2  Drive Label: Data2
content /srv/dev-disk-by-label-Data2/snapraid.content
disk Data2 /srv/dev-disk-by-label-Data2


exclude *.bak
exclude *.unrecoverable
exclude /tmp/
exclude lost+found/
exclude .content
exclude aquota.group
exclude aquota.user
exclude snapraid.conf

any idea what can be wrong? snapraid was the main reason i choose OMV over xpenology, and if i cannot get it work all the time i spent with data migration was useless...

no, it's empty formated freshly. i even tried to exclude a folder with contains smaller files from parity. basically i get the outofparity error immediately after attempting sync, so it's not like it's syncing for minutes than gets ouf of parity

edit: after searching the snapraid forum once again for solution i found this thread https://sourceforge.net/p/snap…/1677233/thread/4a57bd19/ it seems this is a bug in snapraid, i have installed the beta version and syncing finally works

yes, i am on btrfs. what sync speeds are you getting with ext4? my initial sync is running for more than 30 hours now, with current speed 19 MB/s. On SnapRaid forum some users are reporting speeds ove 1000 MB/s (but with 8+ drives)