Date: Fri, 09 Nov 2007 16:08:28 +0200 From: Toomas Aas <toomas.aas@raad.tartu.ee> To: freebsd-geom@freebsd.org Subject: BIO_FLUSH and BBWC Message-ID: <473469DC.3040305@raad.tartu.ee>
next in thread | raw e-mail | index | archive | help
Hello! Using FreeBSD 7.0-BETA2 I created some UFS+gjournal filesystems on IBM ServeRAID 8k (aac) controller. When the filesystem is being mounted, I get this message: GEOM_JOURNAL: BIO_FLUSH not supported by aacd1s2 OK, so aac driver doesn't support BIO_FLUSH. Is my understanding correct that BIO_FLUSH is the request that tells the controller to flush its cache, or is it about flushing some other cache? If it is controller cache that can't be flushed, then am I correct in thinking that if my controller has battery-backed cache then this is actually not a major concern? Another message that I don't understand which happens when mounting the FS is this: WARNING: Expected rawoffset 0, found 514080 -- Toomas Aas
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?473469DC.3040305>