Are you running ‘ls’ or are you doing something like: 'getfattr -d -m ceph.dir.* /path/to/your/ceph/mount’ ? —Lincoln > On Sep 12, 2016, at 1:00 PM, Ilya Moldovan <il.moldovan@xxxxxxxxx> wrote: > > Thanks, John > > But why listing files in a directory with about a million files takes > about 30 minutes? > > Ilya Moldovan > > 2016-09-08 20:59 GMT+03:00, Ilya Moldovan <il.moldovan@xxxxxxxxx>: >> Hello! >> >> How CephFS calculates the directory size? As I know there is two >> implementations: >> >> 1. Recursive directory traversal like in EXT4 and NTFS >> 2. Calculation of the directory size by the file system driver and save it >> as an attribute. In this case, the driver catches adding, deleting and >> editing files on the fly and changes the size of the directory. In this >> case there is no need recursive directory traversal. >> >> The directory which we are requesting a size can potentially contain >> thousands of files at different levels of nesting. >> >> Our components will call the the directory size using the POSIX API. The >> number of calls of this attribute is will be high and recursive directory >> traversal is not suitable for us. >> >> Thanks for the answers! >> > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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