According to current kernel implemenation, non-zero extsize might affect
the result of defragmentation.
Just print a warning on that if non-zero extsize is set on file.
Signed-off-by: Wengang Wang <wen.gang.wang@xxxxxxxxxx>
---
spaceman/defrag.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/spaceman/defrag.c b/spaceman/defrag.c
index ab8508bb..b6b89dd9 100644
--- a/spaceman/defrag.c
+++ b/spaceman/defrag.c
@@ -526,6 +526,18 @@ defrag_xfs_defrag(char *file_path) {
goto out;
}
+ if (ioctl(defrag_fd, FS_IOC_FSGETXATTR, &fsx) < 0) {
+ fprintf(stderr, "FSGETXATTR failed %s\n",
+ strerror(errno));
+ ret = 1;
+ goto out;
+ }
+
+ if (fsx.fsx_extsize != 0)
+ fprintf(stderr, "%s has extsize set %d. That might affect defrag "
+ "according to kernel implementation\n",
+ file_path, fsx.fsx_extsize);
+
clone.src_fd = defrag_fd;
defrag_dir = dirname(file_path);
--
2.39.3 (Apple Git-146)
