From: Mikael Abrahamsson <swmike@swm.pp.se>
To: Roberto Spadim <roberto@spadim.com.br>
Cc: Linux-RAID <linux-raid@vger.kernel.org>
Subject: Re: doubts about sdd raid1 and cfs
Date: Sat, 13 Jun 2015 22:14:04 +0200 (CEST) [thread overview]
Message-ID: <alpine.DEB.2.02.1506132211560.9487@uplift.swm.pp.se> (raw)
In-Reply-To: <CAH3kUhFLHdJ6T_RHaL2AyFHuH3Ta90DLhj8TKM5jZ_31mY2OCw@mail.gmail.com>
On Sat, 13 Jun 2015, Roberto Spadim wrote:
> hi guys, i`m setting up a new server, it have
> 1) 2x 256gb sdd
> Samsung SSD 850 PRO 256GB, EXM02B6Q
> 500118192 sectors, multi 1: LBA48 NCQ (depth 31/32)
> 2)1tb hdd
> Hitachi HUA722010CLA330, JP4OA3EA
> 1953525168 sectors, multi 16: LBA48 NCQ (depth 31/32)
>
> i`m plannig a raid1 with ssd and hdd, hdd being a "write-mostly", and
> 750gb of hdd i will use to backup or other useless files
>
> i have somedoubts about the setup..
> i use xfs at filesystem, should i consider TRIM command at filesystem?
> the problem is hdd being part of raid1 setup with others ssd, could
> the ssd receive the TRIM and the hdd too?
> any idea is wellcome
Frankly, reading about the firmware problems on Samsung SSDs in
combination with TRIM, I would recommend against using TRIM on samsung
drives.
https://bugs.launchpad.net/ubuntu/+source/fstrim/+bug/1449005
--
Mikael Abrahamsson email: swmike@swm.pp.se
next prev parent reply other threads:[~2015-06-13 20:14 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-13 19:42 doubts about sdd raid1 and cfs Roberto Spadim
2015-06-13 20:14 ` Mikael Abrahamsson [this message]
2015-06-13 20:18 ` Roberto Spadim
2015-06-13 20:32 ` Mikael Abrahamsson
2015-06-13 20:33 ` Roberto Spadim
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