On ??, 2009-10-22 at 10:56 +0200, Jan Damborsky wrote: > Hi Alex, > > since Sparc uses dcfs(7FS) "Compression file system" module > to decompress files on-the-fly when data are being read, my > understanding > is that all pieces necessary to bring up the system to the point when > dcfs(7FS) can do its job must remain uncompressed > > I am not sure what the critical pieces are - CC-in Jan S. who > might correct me or provide more details on this topic. > > That said, I am thinking how much space we actually save in this case > (Sparc OpenSolaris installer boot archive) - '/usr' is separated > in compressed archive solaris.zlib and kernel along with drivers > is uncompressed. > > If it turns out it is not significant, I think we might also consider > not to use dcfs at all, since there are also disadvantages - we are > seeing weird bugs filed from time to time against Sparc - they > are caused by the limitations of dcfs - compressed file can't be > updated. This is why 'fiocompress' attribute in Distro Constructor > Sparc manifest exists - files marked with this attribute are left > uncompressed. > > Thank you, > Jan
I've prepared some Sparc iso's using root_archive for creating miniroot, they work good, but I?m agree about updating question. For DC it seems that only small part of bootroot is fiocompressed - /sbin,/usr and /libs and probably using dcfs for miniroot compression is not optimal it this case, other method is required. Regards, -- ::alhazred
