{"id":353,"date":"2017-08-16T12:48:07","date_gmt":"2017-08-16T11:48:07","guid":{"rendered":"https:\/\/tollana.d-tor.org\/notes-to-self\/?p=353"},"modified":"2017-08-16T12:52:15","modified_gmt":"2017-08-16T11:52:15","slug":"dusting-off-the-array-part-6","status":"publish","type":"post","link":"https:\/\/tollana.d-tor.org\/notes-to-self\/?p=353","title":{"rendered":"Dusting off the Array! (Part 6)"},"content":{"rendered":"

Well, well, well! Here we are again. What shall I say? The plan worked almost as expected. As it turned out it was enough to use the spare HGST 4TB drive and a spare USB 3.0 2TB drive joined in a volume group to copy the remaining data.<\/p>\n

The RAID resync was interrupted because a 2nd drive was failing (of course a SEAGATE 3TB). The failing sectors were mostly on the obnam LV, so not a big problem regarding the data, but unfortunately there’s no way to skip that LV or the files, because RAID is at the lowest level and only knows about sectors.<\/p>\n

So I completely rebuilt the raid with the 1 remaining free HGST drive and the 3 new ones, everything fly by wire. With 4 working drives the rebuild went ahead with about 33MB\/sec, as it should. After 2 days the rebuild and copying the data back was finally done. I lost my obnam backup and a few pics and movies from “movs”, but that’s about it. So I guess one could say that I got away with a slap on the wrist!<\/p>\n

In the meantime I’ve had it with the EasyRAID SATA enclosure. There were 2 major drawbacks:<\/p>\n

    \n
  1. It shuts down when idle, with a timeout too short to survive a reboot. Very nasty!<\/li>\n
  2. Even if it’s turned on during POST, sometimes not all drives spun up in time or at all, so it always took several attempts to re-assemble the raid. Dunno if it is because of old age or if it’s a design flaw.<\/li>\n<\/ol>\n

    So I looked for another solution and went for an ORINOCO 4Bay USB3.0 and eSATA hard disk docking station. It’s hot-pluggable and has all the bells and whistles. From what I can tell for now, it was a good choice. It has an on\/off button, but no timeout, so no more boots without the Array. Yay!<\/p>\n

    At first it didn’t seem to work at all, but only because I connected the wrong eSATA cable (that one which was dangling free behind hadante). Stupid me! Once I connected the right cable, everything went smoothly.<\/p>\n

    One more thing: The serial number reported by smartctl is not<\/strong> printed anywhere on the drive label \ud83d\ude41 Fortunately I found the spare drive on the first attempt! Such things don’t happen often…<\/p>\n

    And now: This is how it looks like after cleaning up:<\/p>\n

    \"\"<\/a><\/p>\n

    Neat, isn’t it? It’s a bit louder without a closed casing, but that’s not necessarily a bad thing ™.<\/p>\n","protected":false},"excerpt":{"rendered":"

    Well, well, well! Here we are again. What shall I say? The plan worked almost as expected. As it turned out it was enough to use the spare HGST 4TB drive and a spare USB 3.0 2TB drive joined in a volume group to copy the remaining data. The RAID resync was interrupted because a … Continue reading Dusting off the Array! (Part 6)<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[116,79,77],"tags":[58,11],"class_list":["post-353","post","type-post","status-publish","format-standard","hentry","category-dusting-off-the-array","category-hardware","category-linux","tag-mdadm","tag-raid"],"_links":{"self":[{"href":"https:\/\/tollana.d-tor.org\/notes-to-self\/index.php?rest_route=\/wp\/v2\/posts\/353","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tollana.d-tor.org\/notes-to-self\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tollana.d-tor.org\/notes-to-self\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tollana.d-tor.org\/notes-to-self\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tollana.d-tor.org\/notes-to-self\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=353"}],"version-history":[{"count":2,"href":"https:\/\/tollana.d-tor.org\/notes-to-self\/index.php?rest_route=\/wp\/v2\/posts\/353\/revisions"}],"predecessor-version":[{"id":356,"href":"https:\/\/tollana.d-tor.org\/notes-to-self\/index.php?rest_route=\/wp\/v2\/posts\/353\/revisions\/356"}],"wp:attachment":[{"href":"https:\/\/tollana.d-tor.org\/notes-to-self\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=353"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tollana.d-tor.org\/notes-to-self\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=353"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tollana.d-tor.org\/notes-to-self\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=353"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}