For some filesystems, such as aufs which may be used by docker container,
don't support either the SEEK_DATA/HOLE or FIEMAP to get the block
map. So add a FileNobmap class to fall back to standard copy when there
is no way to get the block map.
[Yocto #12988]
Signed-off-by: Kevin Hao <kexin....@windriver.com>
---
scripts/lib/wic/filemap.py | 28 +++++++++++++++++++++++++++-
1 file changed, 27 insertions(+), 1 deletion(-)
diff --git a/scripts/lib/wic/filemap.py b/scripts/lib/wic/filemap.py
index f8c6e09d017f..4d9da281720c 100644
--- a/scripts/lib/wic/filemap.py
+++ b/scripts/lib/wic/filemap.py
@@ -469,6 +469,29 @@ class FilemapFiemap(_FilemapBase):
% (first_prev, last_prev))
yield (first_prev, last_prev)
+class FilemapNobmap(_FilemapBase):
+ """
+ This class is used when both the 'SEEK_DATA/HOLE' and FIEMAP are not
+ supported by the filesystem or kernel.
+ """
+
+ def __init__(self, image, log=None):
+ """Refer the '_FilemapBase' class for the documentation."""
+
+ # Call the base class constructor first
+ _FilemapBase.__init__(self, image, log)
+ self._log.debug("FilemapNobmap: initializing")
+
+ def block_is_mapped(self, block):
+ """Refer the '_FilemapBase' class for the documentation."""
+ return True
+
+ def get_mapped_ranges(self, start, count):
+ """Refer the '_FilemapBase' class for the documentation."""
+ self._log.debug("FilemapNobmap: get_mapped_ranges(%d, %d(%d))"
+ % (start, count, start + count - 1))
+ yield (start, start + count -1)
+
def filemap(image, log=None):
"""
Create and return an instance of a Filemap class - 'FilemapFiemap' or
@@ -482,7 +505,10 @@ def filemap(image, log=None):
try:
return FilemapFiemap(image, log)
except ErrorNotSupp:
- return FilemapSeek(image, log)
+ try:
+ return FilemapSeek(image, log)
+ except ErrorNotSupp:
+ return FilemapNobmap(image, log)
def sparse_copy(src_fname, dst_fname, skip=0, seek=0,
length=0, api=None):
--
2.26.2
-=-=-=-=-=-=-=-=-=-=-=-
Links: You receive all messages sent to this group.
View/Reply Online (#140606):
https://lists.openembedded.org/g/openembedded-core/message/140606
Mute This Topic: https://lists.openembedded.org/mt/75490256/21656
Group Owner: openembedded-core+ow...@lists.openembedded.org
Unsubscribe: https://lists.openembedded.org/g/openembedded-core/unsub
[arch...@mail-archive.com]
-=-=-=-=-=-=-=-=-=-=-=-
