On 04/08/10 09:17, Dmitry Monakhov wrote: > Nebojsa Trpkovic <trx.lists@xxxxxxxxx> writes: >> Intel X25-V 40GB (latest firmware) > can you please provide an actual version of firmware. > As soon as i know X25 zeroing was disabled. > Can you please post an output of your queue flags > cat /sys/block/sdXXX/queue/discard_zeroes_data ====================== cat /sys/block/sda/queue/discard_zeroes_data 1 cat /sys/block/sda/queue/discard_granularity 512 ====================== Short history (you're probably talking about Intel's firmware problems): - Intel releases X25-M (80 and 160GB) G1. G1 doesn't support TRIM. - Intel releases X25-M (80 and 160GB) G2. G2's initial firmware doesn't support TRIM. - Intel makes TRIM-enabled firmware for G2 and publishes it. - Customers hammer some of their G2 SSDs by flashing new firmware. - Intel withdraws new firmware. - Intel fixes firmware and releases new one (this time without nasty behaviour). Read 2 updates on the start of first page: http://www.anandtech.com/show/2865 - Intel sells it's technology to Kingston and Kingston starts to produce 40GB version of G2 named Kingston BootDrive SNV125-S2/40GB that doesn't support TRIM. (Kingston produced some full-grown G1 and G2, but that is not a point here. SNM125 and SNM225). http://www.anandtech.com/show/2865/4 - Intel starts selling it's own 40GB G2 named X25-V with TRIM enabled out of the box. http://www.anandtech.com/show/2968/intel-s-x25-v-kingston-s-30gb-ssdnow-v-series-battle-of-the-125-ssds - (guess) Intel needs too much royalties from Kingston for TRIM enabled firmware, so Kingston SNV125-S2/40GB doesn't get (official) TRIM enabled firmware and Kingston stops selling Intel-based SSDs. Anyways, all X25-V are shipped with TRIM enabled firmware. My current firmware is 2CV102HD. hdparm -I /dev/sda gives this, too: Enabled Supported: * Data Set Management TRIM supported * Deterministic read ZEROs after TRIM Nebojsa -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
