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| author | Christian Hesse <mail@eworm.de> | 2015-01-02 11:23:44 +0100 |
|---|---|---|
| committer | Gerardo Exequiel Pozzi <vmlinuz386@gmail.com> | 2015-01-02 15:13:36 -0300 |
| commit | 156b9a6093444f904e01238f8f807bb16da7b6b4 (patch) | |
| tree | d8fa8f7b7beb6d83d57b14afd1dc284fe2a71cd8 /archiso | |
| parent | 0b7a77cfc319515cc4ebdb3651ba6283c06cf773 (diff) | |
| download | archiso32-156b9a6093444f904e01238f8f807bb16da7b6b4.tar.xz | |
allow to change dm snapshot chunksize
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 <mail@eworm.de>
Diffstat (limited to 'archiso')
| -rw-r--r-- | archiso/initcpio/hooks/archiso | 3 |
1 files changed, 2 insertions, 1 deletions
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" |