Date: Wed, 10 Jan 2007 07:08:17 +0000 From: Vasil Dimov <vd@FreeBSD.org> To: "R. B. Riddick" <arne_woerner@yahoo.com> Cc: Ivan Voras <ivoras@fer.hr>, freebsd-geom@FreeBSD.org Subject: Re: graid3 device gives "Invalid argument" when requested to read>=128kb Message-ID: <20070110070817.GA33206@freefall.freebsd.org> In-Reply-To: <36644.58831.qm@web30303.mail.mud.yahoo.com> References: <45965441.6010002@fer.hr> <36644.58831.qm@web30303.mail.mud.yahoo.com>
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On Sat, Dec 30, 2006 at 04:39:39AM -0800, R. B. Riddick wrote: > --- Ivan Voras <ivoras@fer.hr> wrote: > > No, probably not. The whole thing was my very first attempt at doing > > anything with GEOM (ggcomp - it still exists somewhere), which wasn't > > very usable :) "Normal" file system operations worked, though I think > > there were problems even here with 16 KB sectors. > > > Sector size seems to be not the reason (at least with gnop and dd on R6.1): > > neo# gnop create -S 16384 md0 > neo# dd if=/dev/md0.nop of=/dev/null > dd: /dev/md0.nop: Invalid argument > 0+0 records in > 0+0 records out > 0 bytes transferred in 0.000155 secs (0 bytes/sec) This is because default dd's read block size is 512b > neo# dd if=/dev/md0.nop of=/dev/null bs=16k > 1024+0 records in > 1024+0 records out > 16777216 bytes transferred in 0.398660 secs (42084027 bytes/sec) > > Just UFS seems to have a problem: > > neo# newfs /dev/md0.nop > /dev/md0.nop: 16.0MB (32768 sectors) block size 16384, fragment size 16384 > using 4 cylinder groups of 4.02MB, 257 blks, 128 inodes. > newfs: can't read old UFS1 superblock: read error from block device: Invalid > argument Look at newfs's -S switch, this is the same issue as with dd above. -- Vasil Dimov gro.DSBeerF@dv
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