{"id":1518,"date":"2009-09-03T01:05:14","date_gmt":"2009-09-03T01:05:14","guid":{"rendered":"http:\/\/www.markwilson.co.uk\/blog\/2009\/09\/creating-an-iscsi-target-on-a-netgear-readynas.htm"},"modified":"2017-01-14T12:58:12","modified_gmt":"2017-01-14T12:58:12","slug":"creating-an-iscsi-target-on-a-netgear-readynas","status":"publish","type":"post","link":"https:\/\/www.markwilson.co.uk\/blog\/2009\/09\/creating-an-iscsi-target-on-a-netgear-readynas.htm","title":{"rendered":"Creating an iSCSI target on a Netgear ReadyNAS"},"content":{"rendered":"

A few months ago, I wrote that I was looking for an iSCSI target add-on for my Netgear ReadyNAS Duo<\/a>. I asked if such an add-on was available on Netgear’s ReadyNAS community forums<\/a>; however it seems that these are not really a true indication of what is available and the moderators are heavily biased by what Netgear supports, rather than what can<\/em> be done. Thanks to Garry Martin, who pointed me in the direction of Stefan Rubner’s ReadyNAS port<\/a> of the iSCSI Enterprise Target Project<\/a>, I now have a ReadyNAS acting as an iSCSI target.<\/p>\n

I have a lot of data on my first ReadyNAS and, even though I backed it all up to a new 1.5TB drive in my server (which will eventually be swapped into the the ReadyNAS as part of the next X-RAID upgrade), I wasn’t prepared to risk losing it so I bought a second ReadyNAS to act as an iSCSI target for serving virtual machine images. In short, don’t run this on your ReadyNAS unless you are reasonably confident at a Linux command prompt and you have a backup of your data. This worked for me but your mileage may vary – and, if it all goes wrong and takes your data with it, please don’t blame me.<\/p>\n

First up, I updated my ReadyNAS to the latest software release (at the time of writing, that’s RAIDiator version 4.1.6<\/a>). Next, I enabled SSH access<\/a> using the Updates page in FrontView with the EnableRootSSH<\/a> and ToggleSSH<\/a> addons<\/a> (note that these do not actually install any user interface elements: EnableRootSSH does exactly what it says, and when it’s complete the root password will be set to match the admin password; ToggleSSH will enable\/disable SSH each time the update is run).<\/p>\n

The next step was to install the latest stable version<\/a> (v0.4.17-1.0.1) of Stefan Rubner’s iSCSI target add-on for ReadyNAS<\/a> (as for EnableRootSSH and ToggleSSH, it is simply applied as an update in FrontView).<\/p>\n

With SSH enabled on the ReadyNAS, I switched to using a Mac (as it has a Unix command prompt which includes an SSH client) but any Unix\/Linux PC, or a Windows PC running something like PuTTY<\/a> will work too:<\/p>\n

ssh root@ipaddress<\/code><\/p>\n

After changing directory to \/etc (cd \/etc<\/code>), I checked for an existing ietd.conf file and found that there was an empty one there as ls-al ie*<\/code> returned:<\/p>\n

-rw-r–r–\u00a0\u00a0\u00a0\u00a01\u00a0admin\u00a0\u00a0\u00a0\u00a0admin\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a00\u00a0Dec\u00a0\u00a03\u00a0\u00a02008 ietd.conf<\/em><\/p>\n

I renamed this (mv ietd.conf ietd.conf.original<\/code>) and downloaded a pre-configured version with wget http:\/\/readynasfreeware.org\/gf\/download\/docmanfileversion\/3\/81\/ietd.conf<\/code> before editing the first line (vi ietd.conf<\/code>) to change the IQN for the iSCSI target (a vi<\/code> cheat sheet<\/a> might come in useful here).<\/p>\n

As noted in the installation instructions<\/a>, the most important part of this file is the Lun 0 Path=\/c\/iscsi_0,Type=fileio<\/code> entry. I was happy with this filename, but it can be edited if required. Next, I created a 250GB file to act as this iSCSI LUN using dd if=\/dev\/zero of=\/c\/iscsi_0 bs=10485760 count=25600<\/code>. Beware, this takes a long time (I went to the pub, came back, wrote a good chunk of this blog post and it was still chugging away for just over 4 hours; however it’s possible to get some idea of progress by watching the amount of free space reported in FrontView).<\/p>\n

At this point, I began to deviate from the installation notes – attempting to run \/etc\/init.d\/rfw-iscsi-target start<\/code> failed so I rebooted the ReadyNAS but when I checked the Installed Add-ons page in FrontView I saw that the iSCSI target was already running although the target was listed as NOT_FOUND<\/code> and clicking the Configure Targets button seemed to have no effect (I later found that was an IE8 issue – the button produced a pop-up when I ran it from Safari over on my Mac and presumably would have worked in another browser on Windows too).<\/p>\n

I changed the target name to \/c\/iscsi_0<\/code>, saved the changes, and restarted the ReadyNAS again (just to be sure, although I could have restarted the service from the command line), checking that there was a green light next to the iSCSI target service in FrontView (also running \/etc\/init.d\/rfw-iscsi-target status<\/code> on the command line).<\/p>\n

\"ReadyNAS<\/p>\n

With the target running, I switched to my client (a Windows Server 2008 computer) and ran the iSCSI initiator, adding a portal on the Discovery tab (using the IP address of the ReadyNAS box and the default port of 3260), then switching to the Targets tab and clicking the Refresh button. I selected my target and clicked Log On… waiting with baited breath.<\/p>\n

\"Windows\"Windows<\/p>\n

\"iSCSI<\/p>\n

No error messages indicated that everything was working so I switched to Server Manager and saw a new 250GB unallocated disk in Disk Management, which I then brought online and initialised.<\/p>\n

Finally, I updated \/etc\/rc6.d\/S99reboot to include \/etc\/init.d\/rfw-iscsi-target stop<\/code> just before the line that says # Save the last 5 ecounters by date.<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"

A few months ago, I wrote that I was looking for an iSCSI target add-on for my Netgear ReadyNAS Duo. I asked if such an add-on was available on Netgear’s ReadyNAS community forums; however it seems that these are not really a true indication of what is available and the moderators are heavily biased by … Continue reading Creating an iSCSI target on a Netgear ReadyNAS<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[218],"tags":[3,55],"class_list":["post-1518","post","type-post","status-publish","format-standard","hentry","category-technology","tag-linux","tag-storage"],"yoast_head":"\nCreating an iSCSI target on a Netgear ReadyNAS - markwilson.it<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.markwilson.co.uk\/blog\/2009\/09\/creating-an-iscsi-target-on-a-netgear-readynas.htm\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Creating an iSCSI target on a Netgear ReadyNAS - markwilson.it\" \/>\n<meta property=\"og:description\" content=\"A few months ago, I wrote that I was looking for an iSCSI target add-on for my Netgear ReadyNAS Duo. I asked if such an add-on was available on Netgear’s ReadyNAS community forums; however it seems that these are not really a true indication of what is available and the moderators are heavily biased by … Continue reading Creating an iSCSI target on a Netgear ReadyNAS\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.markwilson.co.uk\/blog\/2009\/09\/creating-an-iscsi-target-on-a-netgear-readynas.htm\" \/>\n<meta property=\"og:site_name\" content=\"markwilson.it\" \/>\n<meta property=\"article:published_time\" content=\"2009-09-03T01:05:14+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2017-01-14T12:58:12+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.markwilson.co.uk\/blog\/images\/readynas-iscsi-target.png\" \/>\n<meta name=\"author\" content=\"Mark Wilson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@markwilsonit\" \/>\n<meta name=\"twitter:site\" content=\"@markwilsonit\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Mark Wilson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2009\\\/09\\\/creating-an-iscsi-target-on-a-netgear-readynas.htm#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2009\\\/09\\\/creating-an-iscsi-target-on-a-netgear-readynas.htm\"},\"author\":{\"name\":\"Mark Wilson\",\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/#\\\/schema\\\/person\\\/98f61365e7c39d6be942174b8c4de468\"},\"headline\":\"Creating an iSCSI target on a Netgear ReadyNAS\",\"datePublished\":\"2009-09-03T01:05:14+00:00\",\"dateModified\":\"2017-01-14T12:58:12+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2009\\\/09\\\/creating-an-iscsi-target-on-a-netgear-readynas.htm\"},\"wordCount\":785,\"commentCount\":34,\"publisher\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/#\\\/schema\\\/person\\\/98f61365e7c39d6be942174b8c4de468\"},\"image\":{\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2009\\\/09\\\/creating-an-iscsi-target-on-a-netgear-readynas.htm#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/images\\\/readynas-iscsi-target.png\",\"keywords\":[\"Linux\",\"Storage\"],\"articleSection\":[\"Technology\"],\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2009\\\/09\\\/creating-an-iscsi-target-on-a-netgear-readynas.htm#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2009\\\/09\\\/creating-an-iscsi-target-on-a-netgear-readynas.htm\",\"url\":\"https:\\\/\\\/www.markwilson.co.uk\\\/blog\\\/2009\\\/09\\\/creating-an-iscsi-target-on-a-netgear-readynas.htm\",\"name\":\"Creating an iSCSI target on a Netgear ReadyNAS - 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This is the second ReadyNAS Duo I've bought and the first is happily serving media and other files to my home network, whereas this one is intended to be hacked so that it can become an inexpensive iSCSI target (I\u2026","rel":"","context":"In \"Storage\"","block_context":{"text":"Storage","link":"https:\/\/www.markwilson.co.uk\/blog\/tag\/storage"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1451,"url":"https:\/\/www.markwilson.co.uk\/blog\/2009\/06\/microsoft-makes-storage-server-2008-including-the-iscsi-software-target-available-to-msdn-and-technet-subscribers.htm","url_meta":{"origin":1518,"position":1},"title":"Microsoft makes Storage Server 2008 (including the iSCSI software target) available to MSDN and TechNet subscribers","author":"Mark Wilson","date":"Monday 1 June 2009","format":false,"excerpt":"I was doing some work yesterday with the Microsoft iSCSI target software and noticed a post on Jose Barteto's blog, indicating that Windows Storage Server 2008 is now available to TechNet and MSDN subscribers. 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We generally don't need it, because we store our files in the cloud, and only use the\u2026","rel":"","context":"In "Technology"","block_context":{"text":"Technology","link":"https:\/\/www.markwilson.co.uk\/blog\/topic\/technology"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.markwilson.co.uk\/blog\/uploads\/image-2.png?fit=1200%2C638&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.markwilson.co.uk\/blog\/uploads\/image-2.png?fit=1200%2C638&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.markwilson.co.uk\/blog\/uploads\/image-2.png?fit=1200%2C638&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.markwilson.co.uk\/blog\/uploads\/image-2.png?fit=1200%2C638&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.markwilson.co.uk\/blog\/uploads\/image-2.png?fit=1200%2C638&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":1519,"url":"https:\/\/www.markwilson.co.uk\/blog\/2009\/09\/connecting-multiple-readynas-devices-to-a-single-ups.htm","url_meta":{"origin":1518,"position":5},"title":"Connecting multiple ReadyNAS devices to a single UPS","author":"Mark Wilson","date":"Friday 4 September 2009","format":false,"excerpt":"It seems to be ReadyNAS week at markwilson.it because that's what I've spent the last couple of days working with but the ReadyNAS really is a stonking piece of hardware (think of it as a \u00c2\u00a3150 Linux box with built-in X-RAID) and mine will soon be providing the storage for\u2026","rel":"","context":"In \"Storage\"","block_context":{"text":"Storage","link":"https:\/\/www.markwilson.co.uk\/blog\/tag\/storage"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/posts\/1518","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/comments?post=1518"}],"version-history":[{"count":3,"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/posts\/1518\/revisions"}],"predecessor-version":[{"id":6870,"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/posts\/1518\/revisions\/6870"}],"wp:attachment":[{"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/media?parent=1518"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/categories?post=1518"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.markwilson.co.uk\/blog\/wp-json\/wp\/v2\/tags?post=1518"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}