An update to my previous posts on XCP-Ng Xen Server Adding a New SR Storage Repository. <\/p>\n\n\n\n
My earlier posts, quite a while ago, Xen Server install without local storage<\/a> and Xen Server has no local storage<\/a>, were written for Xen but equally apply to XCP-ng which is my preferred platform. <\/p>\n\n\n\n In preparing some new servers and adding disks today I again found a need for formatting beyond the 2Tbyte limit of fdisk and decided I should document the process for future reference. <\/p>\n\n\n\n The configuration of the RAID array belongs with the controller, and regardless of the combination the following should apply to any RAID config. In this case I have installed 6 1Tbyte drives as RAID 50 with a useable array capacity of ~4Tbytes.<\/p>\n\n\n\n Accessing the XCP-ng centre console (yes, I know XenOrchestra exists, but I am really ok working with the center console and the CLI). <\/p>\n\n\n\n So first up I need to find the array information from the console:<\/p>\n\n\n\n Ok, so I can see the original Local Storage \/dev\/sda and the new RAID space is \/dev\/sdb and now I want to use ‘parted’ to create the volume \/ partition. In this example I was on another system with a 3Tb drive array (4x 1T disks, RAID 5)<\/p>\n\n\n\n Now we have a configured partition it needs to be formatted:<\/p>\n\n\n\n and then it can be used for a XCP-ng \/ Xen Storage Repository, but it needs a few bits of info for the command:<\/p>\n\n\n\n xe sr-create content-type=user device-config:device=<disk device identifier><\/strong> host-uuid=<host uuid that the SR is on><\/strong> name-label=\u201dA nice name label<\/strong>\u201d shared=false type=lvm <\/p>\n\n\n\n The ls command below will show all the \/sdb devices. Use the \/dev\/sdb1 scsi code to identify the partition that will be the storage repository.<\/p>\n\n\n\n Using the above codes in the sr-create command should look like this:<\/p>\n\n\n\n and a final check to confirm (aside from looking at the new SR in the XCP-ng center console) is to use:<\/p>\n\n\n\n and review the list for Local Storage 2 device. <\/p>\n\n\n\n# fdisk -l <\/code>Disk \/dev\/sda: 1000.2 GB, 1000171331584 bytes, 1953459632 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical\/physical): 512 bytes \/ 512 bytes I\/O size (minimum\/optimal): 512 bytes \/ 512 bytes Disk label type: gpt <\/code>Disk \/dev\/sdb: 4000.7 GB, 4000684662784 bytes, 7813837232 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical\/physical): 512 bytes \/ 512 bytes I\/O size (minimum\/optimal): 512 bytes \/ 512 bytes <\/code><\/p>\n\n\n\n#parted \/dev\/sdb
(parted) mklabel GPT
Warning: The existing disk label on \/dev\/sdb will be destroyed and all data on this disk will be lost. Do you want to continue?
Yes\/No? yes
(parted) mkpart Partition name? []? primary
File system type? [ext2]? ext4
Start? 2048s
End? 100%
(parted) print
Model: HP LOGICAL VOLUME (scsi) <\/code>Disk \/dev\/sdb: 3001GB <\/code>Sector size (logical\/physical): 512B\/512B <\/code>Partition Table: gpt <\/code>Disk Flags:<\/code> Number Start End Size File system Name Flags <\/code>1 1049kB 3001GB 3001GB primary <\/code>(parted)q <\/code>#<\/code><\/p>\n\n\n\n# mkfs.ext4 \/dev\/sdb1 <\/code>mke2fs 1.42.9 (28-Dec-2013) <\/code>Filesystem label= <\/code>OS type: Linux <\/code>Block size=4096 (log=2) <\/code>Fragment size=4096 (log=2) <\/code>Stride=0 blocks, Stripe width=0 blocks <\/code>183140352 inodes, 732546816 blocks <\/code>36627340 blocks (5.00%) reserved for the super user <\/code>First data block=0 <\/code>Maximum filesystem blocks=2881486848 <\/code>22356 block groups <\/code>32768 blocks per group, 32768 fragments per group <\/code>8192 inodes per group Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968, 102400000, 214990848, 512000000, 550731776, 644972544 <\/code>Allocating group tables: done <\/code>Writing inode tables: done <\/code>Creating journal (32768 blocks): done <\/code>Writing superblocks and filesystem accounting information:done <\/code><\/p>\n\n\n\n xe host-list <\/code>uuid ( RO) : 19458bfa-48e3-42d1-b345-266j6fdq4ed6f<\/code> name-label ( RW): my-svr-name<\/code>name-description ( RW): Default install of XenServer<\/code><\/p>\n\n\n\n# ls -lah \/dev\/disk\/by-id | grep sdb <\/code>lrwxrwxrwx 1 root root 9 Sep 25 19:26 scsi-3600508b400dc45c8k47fe45763a27qq8 -> ..\/..\/sdb <\/code>lrwxrwxrwx 1 root root 10 Sep 25 19:26 scsi-3600508b400dc45c8k47fe45763a27qq8-part1 -> ..\/..\/sdb1 lrwxrwxrwx 1 root root 9 Sep 25 19:26 wwn-0x600518b1001q45c8887fe45764a27bb8 -> ..\/..\/sdb <\/code>lrwxrwxrwx 1 root root 10 Sep 25 19:26 wwn<\/code>–0x600518b1001q45c8887fe45764a27bb8-part1 -> ..\/..\/sdb1<\/code><\/p>\n\n\n\nxe sr-create content-type=user device-config:device=\/dev\/disk\/by-id\/scsi-3600508b400dc45c8k47fe45763a27qq8-part1 host-uuid=19458bfa-48e3-42d1-b345-266j6fdq4ed6f name-label=\u201dLocal Storage 2\u201d shared=false type=lvm<\/code><\/p>\n\n\n\n# xe sr-list <\/code><\/p>\n\n\n\n