Eamonn Hamilton wrote: > Hi, > > I've got a couple of Samsung HD501LJ drives attached to a KN9 Ultra > board using the MCp55 chipset, and I'm getting an NCQ depth of 0 > reported at boot, which as I understand it is because support for NCQ > isn't in the sata_nv driver yet for this chipset. > > ata1.00: ATA-7, max UDMA7, 976773168 sectors: LBA48 NCQ (depth 0/32) > ata2.00: ATA-7, max UDMA7, 976773168 sectors: LBA48 NCQ (depth 0/32) Yeap. > Later in the boot, however, I get > SCSI device sda: write cache: enabled, read cache: enabled, doesn't > support DPO or FUA > SCSI device sda: write cache: enabled, read cache: enabled, doesn't > support DPO or FUA > > which as I understand it means my data ( plus the wifes picture > archive! ) is at risk, as I have write cache enabled and barrier support > is disabled because of the lack of FUA. Is this caused by my drives, or > is there something I need to enable? Nothing is in danger. FUA just speeds up barrier a tad bit. Doesn't matter really. -- tejun - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
