----- Original Message ----- From: "matt" <sendtomatt_at_gmail.com> To: <freebsd-current_at_FreeBSD.org> Sent: Sunday, January 20, 2013 9:39 AM Subject: ZFS Trim on mps? > Should I be getting trim with ZFS on an mps device? > > Disks are SATA ssd (830s), only "unsupported" is being reported. > Do I need to set the cam "da" delete method to something (unmap?), or is > ZFS trim only supported on ahci sata controllers? > > vfs.zfs.trim_disable: 0 > vfs.zfs.trim_txg_limit: 64 > kstat.zfs.misc.zio_trim.bytes: 0 > kstat.zfs.misc.zio_trim.success: 0 > kstat.zfs.misc.zio_trim.unsupported: 281 I've got a patch which TRIM support to cam/scsi_da on 8.3, not sure as yet how much work its going to be to port to HEAD but your welcome to try and test. We're done loads of testing on it and we are using it in production so am confident of its quality. LMK if you want the patch to test. Regards Steve ================================================ This e.mail is private and confidential between Multiplay (UK) Ltd. and the person or entity to whom it is addressed. In the event of misdirection, the recipient is prohibited from using, copying, printing or otherwise disseminating it or any information contained in it. In the event of misdirection, illegible or incomplete transmission please telephone +44 845 868 1337 or return the E.mail to postmaster_at_multiplay.co.uk.Received on Sun Jan 20 2013 - 16:02:13 UTC
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