Hello lustre folks, New to this form and lustre as well.
We have a lustre system and the users are getting an error that no space is left on the device. after checking, we have realised that the inodes are full for one of the MDT. lfs df -ihv /mnt/lustre/ UUID Inodes IUsed IFree IUse% Mounted on lustre-MDT0000_UUID 894.0M 894.0M 58 100% /mnt/lustre[MDT:0] lustre-MDT0001_UUID 894.0M 313 894.0M 1% /mnt/lustre[MDT:1] lustre-MDT0002_UUID 894.0M 313 894.0M 1% /mnt/lustre[MDT:2] lustre-OST0000_UUID 4.0G 26.2M 4.0G 1% /mnt/lustre[OST:0] lustre-OST0001_UUID 4.0G 26.1M 4.0G 1% /mnt/lustre[OST:1] lustre-OST0002_UUID 4.0G 28.1M 4.0G 1% /mnt/lustre[OST:2] lustre-OST0003_UUID 4.0G 26.6M 4.0G 1% /mnt/lustre[OST:3] lustre-OST0004_UUID 4.0G 28.2M 4.0G 1% /mnt/lustre[OST:4] lustre-OST0005_UUID 4.0G 27.3M 4.0G 1% /mnt/lustre[OST:5] lustre-OST0006_UUID 4.0G 27.5M 4.0G 1% /mnt/lustre[OST:6] lustre-OST0007_UUID 4.0G 28.0M 4.0G 1% /mnt/lustre[OST:7] lustre-OST0008_UUID 4.0G 27.5M 4.0G 1% /mnt/lustre[OST:8] lustre-OST0009_UUID 4.0G 26.4M 4.0G 1% /mnt/lustre[OST:9] lustre-OST000a_UUID 4.0G 27.9M 4.0G 1% /mnt/lustre[OST:10] lustre-OST000b_UUID 4.0G 28.4M 4.0G 1% /mnt/lustre[OST:11] lustre-OST000c_UUID 4.0G 28.3M 4.0G 1% /mnt/lustre[OST:12] lustre-OST000d_UUID 4.0G 27.8M 4.0G 1% /mnt/lustre[OST:13] lustre-OST000e_UUID 4.0G 27.6M 4.0G 1% /mnt/lustre[OST:14] lustre-OST000f_UUID 4.0G 27.1M 4.0G 1% /mnt/lustre[OST:15] lustre-OST0010_UUID 4.0G 26.5M 4.0G 1% /mnt/lustre[OST:16] lustre-OST0011_UUID 4.0G 27.3M 4.0G 1% /mnt/lustre[OST:17] lustre-OST0012_UUID 4.0G 27.1M 4.0G 1% /mnt/lustre[OST:18] lustre-OST0013_UUID 4.0G 28.8M 4.0G 1% /mnt/lustre[OST:19] lustre-OST0014_UUID 4.0G 28.2M 4.0G 1% /mnt/lustre[OST:20] lustre-OST0015_UUID 4.0G 26.1M 4.0G 1% /mnt/lustre[OST:21] lustre-OST0016_UUID 4.0G 27.2M 4.0G 1% /mnt/lustre[OST:22] lustre-OST0017_UUID 4.0G 28.7M 4.0G 1% /mnt/lustre[OST:23] lustre-OST0018_UUID 4.0G 28.5M 4.0G 1% /mnt/lustre[OST:24] lustre-OST0019_UUID 4.0G 28.3M 4.0G 1% /mnt/lustre[OST:25] lustre-OST001a_UUID 4.0G 27.3M 4.0G 1% /mnt/lustre[OST:26] lustre-OST001b_UUID 4.0G 27.0M 4.0G 1% /mnt/lustre[OST:27] lustre-OST001c_UUID 4.0G 28.8M 4.0G 1% /mnt/lustre[OST:28] lustre-OST001d_UUID 4.0G 28.5M 4.0G 1% /mnt/lustre[OST:29] filesystem_summary: 2.6G 894.0M 1.7G 34% /mnt/lustre After some search on google I have found that there may be some open files on the compute which can lead to consuming of the inodes. With the command below I have got the list of the nodes where the files were open. lctl get_param mdt.*.exports.*.open_files I login to each server and with lsof, I figure out the files and kill all those files, but still it does not work for us. Our primary goal is to bring the usage of inodes from 100% to below 90%, and then we can share the load of inodes on the other two MDT nodes. Need your guidance and support. regards, Ihsan
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