Hi, I was wondering if it's possible to lighten the process of converting sdbox mailboxes to zlib by, instead of using dsync (that brings much more io, copying from alt - and copying of unneeded data as we have many mails already compressed from activating zlib a couble of years ago) just compressing each of the u files.
By compression of the u files I mean opening the uncompressed u file for reading, a u.temp file for writting and: 1. copy the dbox message header from u to u.tmp 2. compress the plain message and write it to u.tmp 3. fix the message_size_hex on the u.tmp dbox message header to the new, compressed size 4. copy the dbox metadata from u to u.tmp with Zphysical_size added 5. copy the u stat times to u.tmp 6. replace u with u.tmp Is the message_size_hex stored anywhere else (indexes) that may cause this to not work? Thank you.
