Once it was up, I attached “Small Source” – my 100G working drive to \/dev\/sdz. and I attached “Small Dest” – my new 8G drive to \/dev\/sdm<\/li>\n<\/ol>\n<\/ol>\nIn summary “New 8” has three hard drives:<\/p>\n
\/dev\/xcda – the drive it came with<\/p>\n
\/dev\/sdz – the 100G “Small Source”<\/p>\n
\/dev\/sdm – the 8G “Small Dest”<\/p>\n
Launch a Console to the “New 8” EC2 instance<\/h3>\n
My goal now is to reduce the size of the “Small Source” such that it will fit on the “Small Dest” and copy the files across. \u00a0the next few commands are all done in the “New 8” Linux console.<\/p>\n
See what the two drives look like<\/p>\n
# fdisk -l \/dev\/sdz1\r\nDisk \/dev\/sdz1: 107.4 GB, 107372068352 bytes, 209711071 sectors\r\nUnits = sectors of 1 * 512 = 512 bytes\r\nSector size (logical\/physical): 512 bytes \/ 512 bytes\r\nI\/O size (minimum\/optimal): 512 bytes \/ 512 bytes<\/pre>\n# fdisk -l \/dev\/sdm\r\nWARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.\r\nDisk \/dev\/sdm: 8589 MB, 8589934592 bytes, 16777216 sectors\r\nUnits = sectors of 1 * 512 = 512 bytes\r\nSector size (logical\/physical): 512 bytes \/ 512 bytes\r\nI\/O size (minimum\/optimal): 512 bytes \/ 512 bytes\r\nDisk label type: gpt\r\n\r\n# Start End Size Type Name\r\n 1 4096 16777182 8G Linux filesyste Linux\r\n128 2048 4095 1M BIOS boot parti BIOS Boot Partition<\/pre>\n# fdisk -l \/dev\/sdm1\r\nDisk \/dev\/sdm1: 8587 MB, 8587820544 bytes, 16773087 sectors\r\nUnits = sectors of 1 * 512 = 512 bytes\r\nSector size (logical\/physical): 512 bytes \/ 512 bytes\r\nI\/O size (minimum\/optimal): 512 bytes \/ 512 bytes<\/pre>\nCheck the existing filesystem on “Small Source”<\/p>\n
# e2fsck \/dev\/sdz1\r\ne2fsck 1.42.12 (29-Aug-2014)\r\n\/: clean, 119138\/507904 files, 1327858\/2022400 blocks<\/pre>\nReduce the size of files on “Small Source”<\/p>\n
# resize2fs -p \/dev\/sdz1 7900M<\/pre>\nChange the partition table on “Small Source” to fit on “Small Dest”<\/p>\n
# fdisk \/dev\/sdz\r\nWARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.\r\nWelcome to fdisk (util-linux 2.23.2).\r\nChanges will remain in memory only, until you decide to write them.\r\nBe careful before using the write command.<\/pre>\n– print the table (redundant as we did this previously)<\/p>\n
Command (m for help): p\r\nDisk \/dev\/sdz: 107.4 GB, 107374182400 bytes, 209715200 sectors\r\nUnits = sectors of 1 * 512 = 512 bytes\r\nSector size (logical\/physical): 512 bytes \/ 512 bytes\r\nI\/O size (minimum\/optimal): 512 bytes \/ 512 bytes\r\nDisk label type: gpt\r\n# Start End Size Type Name\r\n 1 4096 16183295 7.7G Linux filesyste\r\n128 2048 4095 1M BIOS boot parti BIOS Boot Partition\r\nCommand (m for help):<\/pre>\n– delete the partition<\/p>\n
Command (m for help): d\r\nPartition number (1,128, default 128): 1\r\nPartition 1 is deleted<\/pre>\n– Create a new partition. \u00a0Start it at 4096. \u00a0Make it 7900MB\u00a0(the same size as the resize above)<\/p>\n
Command (m for help): n\r\nPartition number (1-127, default 1): 1\r\nFirst sector (34-209715166, default 4096): 4096\r\nLast sector, +sectors or +size{K,M,G,T,P} (4096-209715166, default 209715166): +7900M<\/pre>\n– write the table (& quit)<\/p>\n
w<\/pre>\nq<\/pre>\nCopy the “Small Source” partition to “Small Dest”<\/p>\n
# dd if=\/dev\/sdz1 of=\/dev\/sdm1 bs=32M<\/pre>\nCheck the new filesystem on “Small Dest”<\/p>\n
# e2fsck \/dev\/sdm1<\/pre>\nMount the drive just to make sure it has the contents you want.<\/p>\n
# mount \/dev\/sdm1 sdm\/\r\n# ls sdm\/\r\nbin cgroup dev home lib64 lost+found mnt proc run selinux sys usr\r\nboot config etc lib local media opt root sbin srv tmp var<\/pre>\nOn AWS launch with the Smaller Disk Size<\/h3>\n
All that is left to do now is associate the new “Small Dest” volume with an EC2 instance and you will be back up and running. \u00a0For me, I simply stopped the “Current” EC2, detached the booting volume and then attached “Small Dest” as the booting volume for “Current”<\/p>\n
If you needed 100% uptime, you could launch a new EC2 instance, or use “New 8” and attach “Small Dest” as the booting partition, then use Elastic IP to point to your new small server.<\/p>\n
Cleanup the Old Items<\/h3>\n
My next step is to clean up the snapshots, volumes, and instances that are no longer needed leaving me with a new clean instance an the associated backups. I am not going into detail on this one, as I feel we have used those features enough over the past couple of posts<\/p>\n
And that is how I reduced my disk size.\u00a0 Thanks for reading.<\/p>\n","protected":false},"excerpt":{"rendered":"
I do not want to pay more using more space than I need, so in this post I am going to reduce my disk size on the AWS EC2 instance to use less disk space. Let me start off by saying I do not know if AWS charges for “empty” space on their drives. \u00a0If […]<\/p>\n","protected":false},"author":1,"featured_media":739,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[18],"tags":[25,24,29,30,26,27,28],"_links":{"self":[{"href":"http:\/\/www.stonemillkids.com\/index.php\/wp-json\/wp\/v2\/posts\/797"}],"collection":[{"href":"http:\/\/www.stonemillkids.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.stonemillkids.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.stonemillkids.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.stonemillkids.com\/index.php\/wp-json\/wp\/v2\/comments?post=797"}],"version-history":[{"count":12,"href":"http:\/\/www.stonemillkids.com\/index.php\/wp-json\/wp\/v2\/posts\/797\/revisions"}],"predecessor-version":[{"id":834,"href":"http:\/\/www.stonemillkids.com\/index.php\/wp-json\/wp\/v2\/posts\/797\/revisions\/834"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.stonemillkids.com\/index.php\/wp-json\/wp\/v2\/media\/739"}],"wp:attachment":[{"href":"http:\/\/www.stonemillkids.com\/index.php\/wp-json\/wp\/v2\/media?parent=797"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.stonemillkids.com\/index.php\/wp-json\/wp\/v2\/categories?post=797"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.stonemillkids.com\/index.php\/wp-json\/wp\/v2\/tags?post=797"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}