From: Jens Kasten <jens@kasten-edv.de>
To: dm-devel@redhat.com
Subject: trim support (discard)
Date: Sat, 08 Jan 2011 20:45:16 +0100 [thread overview]
Message-ID: <1294515916.5136.6.camel@jaschtschik-pc> (raw)
Hi list,
It is the first time the i write to this list.
I asked on the ext4 ml and they told me to ask here.
I use the kernel 2.6.37 with cryptsetup and lvm on a intel ssd.
In the logfile after booting i see this entry:
EXT4-fs (dm-1): re-mounted. Opts: discard,errors=remount-ro
EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: discard
EXT4-fs (dm-3): mounted filesystem with ordered data mode. Opts: discard
EXT4-fs (dm-2): mounted filesystem with ordered data mode. Opts: discard
EXT4-fs warning (device dm-1): ext4_issue_discard:2619: discard not
supported, disabling
EXT4-fs warning (device dm-3): ext4_issue_discard:2619: discard not
supported, disabling
EXT4-fs warning (device dm-3): ext4_issue_discard:2619: discard not
supported, disabling
EXT4-fs warning (device dm-3): ext4_issue_discard:2619: discard not
supported, disabling
EXT4-fs (sda1): re-mounted. Opts: discard,commit=0
EXT4-fs (dm-3): re-mounted. Opts: discard,commit=0
EXT4-fs (dm-2): re-mounted. Opts: discard,commit=0
The mount command shows:
/dev/mapper/System2-root_ssd on / type ext2
(rw,noatime,errors=remount-ro,barrier=1,stripe=32,data=ordered,discard)
and the corresponding entry from fstab:
UUID="635a1ad9-9ebb-4d1e-b8c3-30e11148bd92" / ext4
noatime,discard,errors=remount-ro 0 1
So, no discard support so far.
Then i try the wiper.sh script and i get:
wiper.sh: Linux SATA SSD TRIM utility, version 3.1, by Mark Lord.
/dev/dm-1: unable to reliably determine the underlying physical device
name, aborting
Its there in near future the discard support on the LVM?
Viele Grüsse
Jens Kasten
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next reply other threads:[~2011-01-08 19:45 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-08 19:45 Jens Kasten [this message]
2011-01-09 13:28 ` trim support (discard) Milan Broz
2011-01-10 1:50 ` Jens Kasten
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