replace "sd" with "xvd" and you'll be set. It's not a "<b>s</b>csi <b>d</b>isk" but instead a "<b>x</b>en <b>v</b>irtual (block) <b>d</b>evice"<div><br></div><div>On older AKIs, sometimes one would see drives presented to the OS as /dev/sd* still, but it seems like since pvgrub this is no longer the case. It's more "honest" this way regardless; the kernel is seeing it (or at least, presenting it) more accurately for what it is. It never should have listed those drives as /dev/sd*</div>
<div><br></div><div>So...point is...it's not supposed to be /dev/sd* - just like it wasn't /dev/sd* when you used old IDE drives (those were /dev/hd*). Almost all kernels have built-in support for IDE and SCSI, but not for Xen; that's loaded as a module, instead. If you do an "lsmod" you should see a loaded module named xen_blkfront - note also that it has a "used by" value that is the same as the number of (valid...) /dev/xvd* block devices.</div>
<div><br></div><div>See <a href="http://lxr.free-electrons.com/source/drivers/block/xen-blkfront.c">http://lxr.free-electrons.com/source/drivers/block/xen-blkfront.c</a> for info about that module...</div><div><br></div><div>
Does that answer the question? Disregard what Amazon says you should see the device reporting as - it should be xvd*, not sd*. It's not using the scsi driver.</div><div><br></div><div>Brian</div><div><br><div class="gmail_quote">
On Wed, Feb 9, 2011 at 5:49 PM, David HM Spector <span dir="ltr"><<a href="mailto:spector@zeitgeist.com">spector@zeitgeist.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div style="word-wrap:break-word">I am trying to get an attached EBS volume to mount on a customized (ots of php and rails packages) version of the FC14 AMI.<div>It seems the sd devices aren't made by default; but even once they're made, mount refuses to mount the volume</div>
<div><div>saying " /dev/sdf is not a valid block device" Its a an ext3 filesystem so nothing novel there. </div><div><br></div><div>Everything works fine on my older instances with the same scripts; I can get he EBS volume to attach to the instance (I have </div>
<div>some custom ruby scripts that work at startup to attach vol ids passed as user data) and the perms/maj/min device numbers</div><div>look OK too (as one would expect from MAKEDEV). </div><div><br></div><div> Anything obvious I am missing? </div>
<div><br></div><div><br></div><div>tnx,</div><div> David<br><div><div>
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<div><p style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px"><font face="Helvetica" size="4">----------------------------------------------------------------------------------------------</font></p><p style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px">
<font face="Helvetica" size="4"><span> <span> </span></span>David HM Spector</font></p><p style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px"><font face="Helvetica" size="4">spector at zeitgeist dot com<span> </span><a href="http://www.zeitgeist.com" target="_blank">http://www.zeitgeist.com</a></font></p>
<p style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px"><font face="Helvetica" size="4"><span> <span> </span></span>~ ~ ~</font></p><p style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px">
<font face="Helvetica" size="4">"New and stirring things are belittled because if they are not belittled, the<span> </span></font></p><p style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px"><font face="Helvetica" size="4">humiliating question arises, 'Why then are you not taking part in them?'"</font></p>
<p style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px"><font face="Helvetica" size="4"><span> <span> </span></span>--H. G. Wells<span> </span><span> </span></font></p>
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