> > - not sending 0x00 pages but some flag in the responsheader indicating > > an all 0x00 page > > I do intend to write the changes that would be required for what > triggered this thread in such a way that it would (configurably) also > work even if the server isn't running off a filesystem that supports > sparse files (so that it would just write out 0x00 pages instead, rather > than deallocating them). Or did you mean something else?
No what I mean is if either the server or client detects that it is going to send a block of all 0x00, that it then only sends a responsheader with a flag indicating that the block would be 0x00. This reduces network-traffic. Also the server/client can then decide if they push out the block for generating sparse files. This is different from TRIM support as TRIM is for deleted blocks and this is for blocks that are still in use but are filled with 0x00. Folkert van Heusden -- MultiTail is a versatile tool for watching logfiles and output of commands. Filtering, coloring, merging, diff-view, etc. http://www.vanheusden.com/multitail/ ---------------------------------------------------------------------- Phone: +31-6-41278122, PGP-key: 1F28D8AE, www.vanheusden.com ------------------------------------------------------------------------------ Learn how Oracle Real Application Clusters (RAC) One Node allows customers to consolidate database storage, standardize their database environment, and, should the need arise, upgrade to a full multi-node Oracle RAC database without downtime or disruption http://p.sf.net/sfu/oracle-sfdevnl _______________________________________________ Nbd-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/nbd-general
