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crimson/os/seastore/.../block.cc: add error message on alloc error to segment_write

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Signed-off-by: Samuel Just <sjust@redhat.com>
This commit is contained in:
Samuel Just 2021-03-25 11:56:40 -07:00
parent 47d8167cc4
commit 24267ea8cb
1 changed files with 15 additions and 3 deletions
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18
src/crimson/os/seastore/segment_manager/block.cc
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@ -239,15 +239,27 @@ Segment::write_ertr::future<> BlockSegmentManager::segment_write(
get_offset(addr),
bl.length());
bufferptr bptr;
try {
bptr = bufferptr(ceph::buffer::create_page_aligned(bl.length()));
auto iter = bl.cbegin();
iter.copy(bl.length(), bptr.c_str());
} catch (const std::exception &e) {
logger().error(
"BlockSegmentManager::segment_write: "
"exception creating aligned buffer {}",
e
);
throw e;
}
// TODO send an iovec and avoid the copy -- bl should have aligned
// constituent buffers and they will remain unmodified until the write
// completes
return seastar::do_with(
bufferptr(ceph::buffer::create_page_aligned(bl.length())),
std::move(bptr),
[&](auto &bp) {
auto iter = bl.cbegin();
iter.copy(bl.length(), bp.c_str());
return do_write(device, get_offset(addr), bp);
});
}