On Thu, 13 Oct 2011, Andrew Lutomirski wrote: > I'm using Fedora 15 and I ran hugeadm --create-user-mounts=luto (and > created a pool). The result is: > > $ cat /proc/self/mounts |grep huge > systemd-1 /dev/hugepages autofs > rw,relatime,fd=35,pgrp=1,timeout=300,minproto=5,maxproto=5,direct 0 0 > hugetlbfs /dev/hugepages hugetlbfs rw,seclabel,relatime 0 0 > none /var/lib/hugetlbfs/user/luto/pagesize-2MB hugetlbfs > rw,seclabel,relatime,pagesize=2097152 0 0 > > $ ls -ld /dev/hugepages > drwxr-xr-x. 2 root root 0 Oct 11 10:12 /dev/hugepages > $ ls -ld /var/lib/hugetlbfs/user/luto/pagesize-2MB > drwx------. 2 luto root 0 Oct 13 10:07 > /var/lib/hugetlbfs/user/luto/pagesize-2MB > [luto@midnight ~]$ hugectl --force-preload --heap sleep 1 > > So hugectl should work. But it doesn't: > > $ hugectl --force-preload --text true > libhugetlbfs: ERROR: mkstemp() failed: Permission denied > libhugetlbfs: WARNING: Failed to setup hugetlbfs file for segment 0 > > oops. This works around it: > > $ HUGETLB_PATH=/var/lib/hugetlbfs/user/luto/pagesize-2MB/ hugectl > --force-preload --text true > > Presumably something in add_hugetlbfs_mount should check that the > current user has write access to the mount before selecting it. > > --Andy
Thanks for the report Andy, fixing this is on my todo list for the year, I hope to get to it soon and will cc you on the patches when they are ready. Eric
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