Date: Thu, 10 Jul 2014 11:22:51 +0200 From: Francois Tigeot <ftigeot@wolfpond.org> To: FreeBSD-scsi <freebsd-scsi@freebsd.org> Subject: Data corruption with the mfi(4) driver Message-ID: <20140710092251.GA1206@sekishi.zefyris.com>
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Hi, I have encountered catastrophic data corruption with LSI RAID adapters from recent Dell servers (R720xd). The adapters apparently worked fine at first but eventually destroyed the filesystems of volumes experiencing a high load. I found out the hard way a Postgres database import was a sure way to reproduce the problem. Switching to the mrsas(4) driver made my test machine stable again; I have yet to encounter a similar issue with it. Now, this particular server was running under DragonFly and not FreeBSD but the mfi(4) driver is mostly the same under both operating systems and I have found reports of data corruption issues with mfi(4) and recent LSI adapters in the archives of this list. DragonFly will most likely switch to use mrsas(4) by default for at least the LSI Thunderbolt serie of adapters to avoid data loss. This mail from the mfi(4) and mrsas(4) maintainer contains more details, including a partial list of impacted adapters: http://lists.dragonflybsd.org/pipermail/users/2014-July/128703.html -- Francois Tigeot
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