Cannot mkdir: Disk quota exceeded, but iNodes and space are far from exceeding

I am unpacking a tar file when I have error messages like this: [xxxxx@lo-login-02 ~]$ tar -xvf ontonotes-release-5.0_LDC2013T19.tgz ...... (omitted lines) tar: ontonotes-release-5.0/tools/ontonotes-db-tool-v0.999b/src/on/__init__.py: Cannot open: No such file or directory ontonotes-release-5.0/tools/ontonotes-db-tool-v0.999b/LICENSE tar: ontonotes-release-5.0/tools: Cannot mkdir: Disk quota exceeded tar: ontonotes-release-5.0/tools/ontonotes-db-tool-v0.999b/LICENSE: Cannot open: No such file or directory ontonotes-release-5.0/tools/ontonotes-db-tool-v0.999b/INSTALL tar: ontonotes-release-5.0/tools: Cannot mkdir: Disk quota exceeded tar: ontonotes-release-5.0/tools/ontonotes-db-tool-v0.999b/INSTALL: Cannot open: No such file or directory ontonotes-release-5.0/tools/ontonotes-db-tool-v0.999b/setup.py tar: ontonotes-release-5.0/tools: Cannot mkdir: Disk quota exceeded tar: ontonotes-release-5.0/tools/ontonotes-db-tool-v0.999b/setup.py: Cannot open: No such file or directory ontonotes-release-5.0/index.html tar: ontonotes-release-5.0/index.html: Cannot open: Disk quota exceeded tar: Exiting with failure status due to previous errors I have checked my file system quota, Inodes and disk space, but they all seem to be fine: [xxxxx@lo-login-02 ~]$ quota Disk quotas for user xxxxx (uid 198587): Filesystem blocks quota limit grace files quota limit grace lo-ne-home3:/home3 9005516 16777216 20971520 100000* 80000 100000 [xxxxx@lo-login-02 ~]$ df -i Filesystem Inodes IUsed IFree IUse% Mounted on lo-ne-home3:/home3/xxxxx 21251126 122640 21128486 1% /cluster/home/xxxxx [xxxxx@lo-login-02 ~]$ df -h Filesystem Size Used Avail Use% Mounted on lo-ne-home3:/home3/xxxxx 1.0T 8.5G 1016G 1% /cluster/home/xxxxx