Date: Thu, 6 Jun 2013 02:00:36 +0400 (MSK) From: Dmitry Morozovsky <marck@rinet.ru> To: freebsd-stable@FreeBSD.org Subject: TRIM support through ciss Message-ID: <alpine.BSF.2.00.1306060157240.48048@woozle.rinet.ru>
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Dear colleagues, I have a DB server with ciss and a bunch of disks (8 SAS + 2 Intel SATA SSD). However, this setup does not seem to support TRIM on SSDs: kstat.zfs.misc.zio_trim.bytes: 0 kstat.zfs.misc.zio_trim.success: 0 kstat.zfs.misc.zio_trim.unsupported: 418 kstat.zfs.misc.zio_trim.failed: 0 Excerpt from dmesg about SSD: da9 at ciss0 bus 0 scbus0 target 9 lun 0 da9: <COMPAQ RAID 0 OK> Fixed Direct Access SCSI-5 device da9: Serial Number PACCR9SZ7KJS da9: 135.168MB/s transfers da9: Command Queueing enabled da9: 114439MB (234371520 512 byte sectors: 255H 32S/T 28722C) da9: quirks=0x1<NO_SYNC_CACHE> da9: Delete methods: <NONE(*)> the last line bothers me... Is there any tuning I missed? Thanks! -- Sincerely, D.Marck [DM5020, MCK-RIPE, DM3-RIPN] [ FreeBSD committer: marck@FreeBSD.org ] ------------------------------------------------------------------------ *** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck@rinet.ru *** ------------------------------------------------------------------------
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