On Monday, 2020-08-24 at 15:19:24 +02, Markus Armbruster wrote: > David Edmondson <david.edmond...@oracle.com> writes: > >> Rather than a fixed 256kB blocksize, allow the user to specify the >> size used. It must be a non-zero power of two, defaulting to 256kB. > > Nitpick: any power of two is non-zero. Scratch "non-zero".
Indeed. >> Signed-off-by: David Edmondson <david.edmond...@oracle.com> >> --- > [...] >> diff --git a/docs/system/device-url-syntax.rst.inc >> b/docs/system/device-url-syntax.rst.inc >> index bc38b9df38..ee504ee41a 100644 >> --- a/docs/system/device-url-syntax.rst.inc >> +++ b/docs/system/device-url-syntax.rst.inc >> @@ -194,6 +194,13 @@ These are specified using a special URL syntax. >> Add an offset, in bytes, to all range requests sent to the >> remote server. >> >> + ``blocksize`` >> + The size of all IO requests sent to the remote server. This >> + value may optionally have the suffix 'T', 'G', 'M', 'K', 'k' or >> + 'b'. If it does not have a suffix, it will be assumed to be in >> + bytes. The value must be a non-zero power of two. It defaults >> + to 256kB. >> + >> Note that when passing options to qemu explicitly, ``driver`` is the >> value of <protocol>. >> >> diff --git a/qapi/block-core.json b/qapi/block-core.json >> index d6f5e91cc3..cd16197e1e 100644 >> --- a/qapi/block-core.json >> +++ b/qapi/block-core.json >> @@ -3764,10 +3764,14 @@ >> # @proxy-password-secret: ID of a QCryptoSecret object providing a password >> # for proxy authentication (defaults to no password) >> # >> +# @blocksize: Size of all IO requests sent to the remote server; must >> +# be a non-zero power of two (defaults to 1 256kB) > > Scratch "non-zero". > > "(defaults to 1 256kB)" confuses me. Do you mean "(defaults to 256kB)"? Yes, thanks for catching it. > Please add "(since 5.2)". Will do. >> +# >> # Since: 2.9 >> ## >> { 'struct': 'BlockdevOptionsCurlBase', >> 'data': { 'url': 'str', >> + '*blocksize': 'int', > > Should we use 'size' rather than 'int'? Yes. >> '*timeout': 'int', >> '*username': 'str', >> '*password-secret': 'str', dme. -- But are you safe Miss Gradenko?