Date: Wed, 25 Jan 2012 11:06:40 +0200 From: Nick Katsy <nkatsy@zoral.com.ua> To: freebsd-geom@freebsd.org Subject: Problem of using ssd+geom+ufs on FreeBSD 9.0 Message-ID: <4F1FC620.9060603@zoral.com.ua>
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I have pair ssd-drives that I want to use in the raid1 (using ufs + geom). If I create an ufs on a single drive (without mirroring), I see that support for the trim in this case works properly. But if I create a mirror, and trying to create on it ufs, I see in the /var/log/messages: --- TRIM flag on fs but cannot get whether disk supports TRIM --- os: FreeBSD 9.0-RELEASE amd64 ssd drive: OCZ-VERTEX2 1.33 60G chipset: Intel ESB2 AHCI SATA controller # ssd info camcontrol identify ada2 --- pass3: <OCZ-VERTEX2 1.33> ATA-8 SATA 2.x device pass3: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes) protocol ATA/ATAPI-8 SATA 2.x device model OCZ-VERTEX2 firmware revision 1.33 ... data set management (TRIM) yes --- # Ufs without mirror (newfs -U -E -t /dev/ada2) tunefs -p /dev/ada2 --- ... tunefs: trim: (-t) enabled ... --- # Ufs with mirror (newfs -U -E -t /dev/mirror/ssd_mirror0s1) tunefs -p /dev/mirror/ssd_mirror0 --- ... tunefs: trim: (-t) enabled ... --- # mount -t ufs /dev/mirror/ssd_mirror0s1 /mnt --- /var/log/messages Jan 25 10:17:54 dev kernel: WARNING: /mnt: TRIM flag on fs but cannot get whether disk supports TRIM --- I know that a similar problem was described in the "freebsd-geom" mailing list: http://lists.freebsd.org/pipermail/freebsd-geom/2011-August/004909.html. Seems that no changes in the resolving of this problem has not appeared yet? -- Best regards, Nick Katsy, System administrator.
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