From: Christian Hesse <[email protected]> Copying big amount of data results in bad performance as data is written in chunks of 4kiB (8 * 512 bytes).
The default is not changed but can be overwritten. Signed-off-by: Christian Hesse <[email protected]> --- archiso/initcpio/hooks/archiso | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/archiso/initcpio/hooks/archiso b/archiso/initcpio/hooks/archiso index 1bd9419..3ef4eb1 100644 --- a/archiso/initcpio/hooks/archiso +++ b/archiso/initcpio/hooks/archiso @@ -31,7 +31,7 @@ _mnt_fs() { rw_dev=$(losetup --find --show "/run/archiso/cowspace/${cow_directory}/${img_name}.cow") echo ${rw_dev} >> /run/archiso/used_block_devices - dmsetup create ${dm_snap_name} --table "0 ${ro_dev_size} snapshot ${ro_dev} ${rw_dev} ${cow_persistent} 8" + dmsetup create ${dm_snap_name} --table "0 ${ro_dev_size} snapshot ${ro_dev} ${rw_dev} ${cow_persistent} ${cow_chunksize}" _mnt_dev "/dev/mapper/${dm_snap_name}" "${newroot}${mnt}" "-w" echo $(readlink -f /dev/mapper/${dm_snap_name}) >> /run/archiso/used_block_devices @@ -112,6 +112,7 @@ run_hook() { fi [[ -z "${cow_directory}" ]] && cow_directory="persistent_${archisolabel}/${arch}" + [[ -z "${cow_chunksize}" ]] && cow_chunksize="8" # set mount handler for archiso mount_handler="archiso_mount_handler" -- 2.2.1
