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Hi all:
extern "C" int rbd_discard(rbd_image_t image, uint64_t ofs, uint64_t len)
| { | | librbd::ImageCtx *ictx = (librbd::ImageCtx *)image; | | tracepoint(librbd, discard_enter, ictx, ictx->name.c_str(), | | ictx->snap_name.c_str(), ictx->read_only, ofs, len); | | if (len > std::numeric_limits<int>::max()) { | | tracepoint(librbd, discard_exit, -EINVAL); | | return -EINVAL; | | } | |
| | int r = ictx->io_work_queue->discard(ofs, len, ictx->skip_partial_discard); | | tracepoint(librbd, discard_exit, r); | | return r; | | } |
I tried to call rbd python api, rbd.Image.discard , and I found there is limit to the parameter len ,
it is a uint64, but is limited by std::numeric_limits<int>::max(), so that I can't discard
too large space at a time. So I wonder what the considerations are about this? |
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