On Tue, 22 Oct 2013 22:35:59 +0200 Matthias Drochner <[email protected]> wrote:
> > On Fri, 11 Oct 2013 10:31:39 -0400 > Michael <[email protected]> wrote: > > Something related - how difficult would it be to support something > > TRIM-ish on CompactFlash? Not that I have the faintest clue about ATA > > in general, let alone the CF-specific extensions... > > The CF part should be easy to do. To be useful in practice, it would > also be necessary to add calls to it from msdosfs. This code is > a mess. Also, common USB card readers don't support the commands > needed AFAIK. I use mine with PATA adaptors: wd0 at atabus0 drive 0 wd0: <SanDisk SDCFH-008G> wd0: drive supports 1-sector PIO transfers, LBA48 addressing wd0: 7629 MB, 15501 cyl, 16 head, 63 sec, 512 bytes/sect x 15625216 sectors wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 4 (Ultra/66) wd0(aceride0:0:0): using PIO mode 4, Ultra-DMA mode 2 (Ultra/33) (using DMA) ( that's what my Sun Blade 2500 boots from so I could get rid of loud and hot SCSI disks, got another one in a PowerBook where it replaces the harddisk ) So, there's no msdosfs anywhere. I'm not too concerned about the one in the Blade since it doesn't get a lot of writes ( just kernel updates and occasional updates of the rescue filesystem - everythig else is on a SATA disk ) but the PowerBook is a different story. > While we are here... I've found some problems with CF cards > when I plugged them into a PCMCIA slot. First was that it was not > correctly identified by "atactl". The other that the machine crashed > on shutdown if the card's filesystem was not mounted, so that > the slot was powered down. > If you have your CF cards connected in a similar way (i.e. not > translated into an "sd" SCSI device), could you try the appended > patch and see that it does no damage? Sorry, I have any PCMCIA, CardBus or USB to CF adaptors. have fun Michael
