Hi Team,
Is there any method/tool available to explicitly mark XFS
file extents as written? One approach I
am aware is explicitly zeroing the entire file (this file may be even
in hundreds of GB in size) through
synchronous/asynchronous(aio/io_uring) mechanism but it is time taking
process for large files,
is there any optimization/approach we can do to explicitly zeroing
file/mark extents as written?
Synchronous Approach:
while offset < size {
let bytes_written = img_file
.write_at(&buf, offset)
.map_err(|e| {
error!("Failed to zero out file: {}
error: {:?}", vol_name, e);
})?;
if offset == size {
break;
}
offset = offset + bytes_written as u64;
}
img_file.sync_all();
Asynchronous approach:
Currently used fio with libaio as ioengine but
results are almost same.
--
Thanks& Regards,
M.Sai Chaithanya.
