Kurt Miller <kurt <at> intricatesoftware.com> writes: > > On Thu, 2014-02-06 at 18:56 -0500, Kurt Miller wrote: > > Various sources indicate that LSI's SAS2008 controllers support TRIM > > when running their IT firmware (LSI [1] and this list [2]). However, I > > have not been able to get it working with Dell PERC H200 or H310 cross > > flashed into LSI IT firmware. Currently I'm testing with Samsung 840 EVO > > SATA SSDs. I have tried various LSI IT firmware versions (P14, P16, P18) > > and various Linux distributions (Ubuntu 13.10, Ubuntu 12.04, Ubuntu 14 > > beta, RHEL 7 beta, Fedora 19). > > > > Is TRIM working for anyone using LSI SAS2008 controllers? > > It turns out yes, TRIM is working for LSI SAS2008 controllers. However, > the Samsung 840 EVO's are not compatible with it and are also missing > from the LSI compatibility list for the controller [1]. When I got my > hands on an SSD that is on the list, TRIM worked as expected. > > [1] http://www.lsi.com/downloads/Public/Host%20Bus%20Adapters/Host%20Bus > %20Adapters%20Common%20Files/LSI_6Gb_SAS_SATA_HBA_Compatibility_List.pdf > > Regards, > -Kurt > > -- > To unsubscribe from this list: send the line "unsubscribe linux-scsi" in > the body of a message to majordomo <at> vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > > I find the Hitachi HUS110 disk storage also does not support fstrim, actually it supports unmap. The reason is the lbpme in 'sg_readcap -16' return 0, but the unmap in 'sg_vpd -p 0xb2' return 1. Maybe the storage is not fully compatible to the SCSI standard. # sg_readcap -16 /dev/dm-2 Read Capacity results: Protection: prot_en=0, p_type=0, p_i_exponent=0 Logical block provisioning: lbpme=0, lbprz=1 # sg_vpd --page=0xb2 /dev/dm-2 Logical block provisioning VPD page (SBC): Unmap command supported (LBPU): 1 Write same (16) with unmap bit supported (LBWS): 1 -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
