Date: Wed, 23 Sep 2015 18:57:12 +0200 From: Michael Fuckner <michael@fuckner.net> To: Tim Gustafson <tjg@ucsc.edu> Cc: freebsd-fs@freebsd.org Subject: Re: Switching from MFI to MRSAS Message-ID: <5602D9E8.2090903@fuckner.net> In-Reply-To: <CAPyBAS6p_=Ld6yiis00L3GxCFgq7JwUXkvg=mzni3ZHHEC1Z3Q@mail.gmail.com> References: <CAPyBAS4-oRjrybxu81nPO1Xb0WPdYzJRoEZ3t8zjNUrxFsiZpw@mail.gmail.com> <56023C15.7080007@fuckner.net> <CAPyBAS6p_=Ld6yiis00L3GxCFgq7JwUXkvg=mzni3ZHHEC1Z3Q@mail.gmail.com>
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On 9/23/2015 5:55 PM, Tim Gustafson wrote: >> Different driver for different LSI Chipsets > > That's not what the man page says. The man page says: > > "Older MegaRAID controllers are supported by mfi(4) and will not work > with mrsas, but both the mfi(4) and mrsas drivers can detect and > manage the LSI MegaRAID SAS 2208/2308/3008/3108 series of > controllers." > OK, haven't done this before, perhaps this works, but... you are replacing a raid driver with another raid driver, so probably TRIM will not work either. > So that's what I'm asking about. I have a newer card, which according > to the man page is supported by the mrsas driver. So my question is, > if I "flip the switch" so that the mrsas driver takes over, will > everything "just" work, or will I need to re-format my disks because > the "mfi" driver configures the disks in a way that is somehow > incompatible with the "mrsas" driver. the on disk format should be compatible. Good luck, Michael!
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