From: Christian Hesse
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
---
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