Phil Brown wrote: > Pawel Wojcik wrote: >> Only SATA drives that operate under SATA framework and SATA HBA >> drivers have this option available to them via format -e. That's >> because they are treated and controlled by the system as scsi drives. >> >From your e-mail it appears that you are talking about SATA drives >> connected to legacy controllers, operating under old IDE framework and >> using pci-ide/ata driver. For those drives, like for any ATA drives, >> format -e does not provide read/write cache control. >> > > > hmm. well I hope sun will fix this bug, and add in the long-missing > write_cache control for "regular" ata drives too.
Actually, I believe such ata drives by default enable the write cache. Have a look at: http://cvs.opensolaris.org/source/xref/on/usr/src/uts/intel/io/dktp/controller/ata/ata_disk.c#674 (tinyurl: http://tinyurl.com/lr7jn#674) Cheers, Dana _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
