Hi folks, Time to empty some OSTs to shut down some old arrays. I've been following the docs from https://doc.lustre.org/lustre_manual.xhtml#lustremaint.remove_ost and am emptying with "lfs find /mnt/lustre/ -obd lustre-OST0060 | lfs_migrate -y" (for the various OSTs) and it's looking pretty good but I do have a few questions:
Q1) I've dealt with a few edge cases, missed files, etc and now "lfs find" and "rbh-find" both show that the OSTs have nothing left on them but they pretty much all have 236 inodes still allocated. Is this just overhead? Q2) Also, one OST shows 237 inodes (lustre-OST0074_UUID shown below) but, again, "lfs find" says its empty. Is that a concern? Q3) Lastly, this file system is under load. Am I safe to deactivate the OSTs while we're running or should I wait till our next maintenance outage? For reference: [root@hpcpbs02 ~]# lfs df -i |sed -e 's/qimrb/lustre/' UUID Inodes IUsed IFree IUse% Mounted on ... lustre-OST0060_UUID 61002112 236 61001876 1% /mnt/lustre[OST:96] lustre-OST0061_UUID 61002112 236 61001876 1% /mnt/lustre[OST:97] lustre-OST0062_UUID 61002112 236 61001876 1% /mnt/lustre[OST:98] lustre-OST0063_UUID 61002112 236 61001876 1% /mnt/lustre[OST:99] lustre-OST0064_UUID 61002112 236 61001876 1% /mnt/lustre[OST:100] lustre-OST0065_UUID 61002112 236 61001876 1% /mnt/lustre[OST:101] lustre-OST0066_UUID 61002112 236 61001876 1% /mnt/lustre[OST:102] lustre-OST0067_UUID 61002112 236 61001876 1% /mnt/lustre[OST:103] lustre-OST0068_UUID 61002112 236 61001876 1% /mnt/lustre[OST:104] lustre-OST0069_UUID 61002112 236 61001876 1% /mnt/lustre[OST:105] lustre-OST006a_UUID 61002112 236 61001876 1% /mnt/lustre[OST:106] lustre-OST006b_UUID 61002112 236 61001876 1% /mnt/lustre[OST:107] lustre-OST006c_UUID 61002112 236 61001876 1% /mnt/lustre[OST:108] lustre-OST006d_UUID 61002112 236 61001876 1% /mnt/lustre[OST:109] lustre-OST006e_UUID 61002112 236 61001876 1% /mnt/lustre[OST:110] lustre-OST006f_UUID 61002112 236 61001876 1% /mnt/lustre[OST:111] lustre-OST0070_UUID 61002112 236 61001876 1% /mnt/lustre[OST:112] lustre-OST0071_UUID 61002112 236 61001876 1% /mnt/lustre[OST:113] lustre-OST0072_UUID 61002112 236 61001876 1% /mnt/lustre[OST:114] lustre-OST0073_UUID 61002112 236 61001876 1% /mnt/lustre[OST:115] lustre-OST0074_UUID 61002112 237 61001875 1% /mnt/lustre[OST:116] lustre-OST0075_UUID 61002112 236 61001876 1% /mnt/lustre[OST:117] lustre-OST0076_UUID 61002112 236 61001876 1% /mnt/lustre[OST:118] lustre-OST0077_UUID 61002112 236 61001876 1% /mnt/lustre[OST:119] ... Cheers! Scott _______________________________________________ lustre-discuss mailing list lustre-discuss@lists.lustre.org http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org
