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. 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
