On 04/22/2011 10:44 AM, Keith Mannthey wrote: > On Fri, 2011-04-22 at 10:27 +0800, Tao Ma wrote: >> On 04/22/2011 08:45 AM, Keith Mannthey wrote: >>> Hello, >>> I am using some Intel SSD drives with 2.6.38.2. >>> >>> >>> /proc/scsi/scsi identifies them as: >>> >>> " >>> Host: scsi4 Channel: 00 Id: 04 Lun: 00 >>> Vendor: ATA Model: INTEL SSDSA2M080 Rev: 02M3 >>> Type: Direct-Access ANSI SCSI revision: 05 >>> " >>> >>> Sometimes I am see the following messages that indicate discard is >>> disabled during runtime: >>> >>> Relevant dmesg: >>> >>> ... >>> EXT4-fs (sdw): mounted filesystem with ordered data mode. Opts: nobarrier,discard >>> EXT4...... >>> >>> .... (some time later) >>> >>> EXT4-fs warning (device sdw): release_blocks_on_commit:2672: discard not supported, disabling >>> EXT4-fs warning (device sds): release_blocks_on_commit:2672: discard not supported, disabling >>> EXT4-fs warning (device sdt): release_blocks_on_commit:2672: discard not supported, disabling >>> EXT4-fs warning (device sdu): release_blocks_on_commit:2672: discard not supported, disabling >>> EXT4-fs warning (device sdv): release_blocks_on_commit:2672: discard not supported, disabling >> Please check whether your ssd works with discard or whether your ssd >> firmware has the ability to do so. >> I used an SSDSA2M160(I guess you are using the same type as me except >> the volume size is 80g, but you have to find it out from intel side) and >> after I upgraded my firmware to the new version(you can download it from >> intel site), it supports discard now. > > > Firmware is up to date as of a few weeks ago. It is 02M3 which still > looks to be the current version. ok... So please check whether your device supports discard or not. Intel has a tool named Intel SSD Toolbox, and it can check the status of your ssd, but the bad thing is that it seems to only have a windows version... Regards, Tao -- 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
