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
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