26. Juli 2017 11:29, "Wido den Hollander" <wido@xxxxxxxx> schrieb: >> Op 26 juli 2017 om 11:26 schreef c.monty@xxxxxx: >> >> Hello! >> >> Based on the documentation for defining quotas in CephFS for any directory >> (http://docs.ceph.com/docs/master/cephfs/quota), I defined a quota for attribute max_bytes: >> ld4257:~ # getfattr -n ceph.quota.max_bytes /mnt/ceph-fuse/MTY/ >> getfattr: Removing leading '/' from absolute path names >> # file: mnt/ceph-fuse/MTY/ >> ceph.quota.max_bytes="100000000" >> >> To validate if the quota is working, I write a 128MB file in /mnt/ceph-fuse/MTY: >> ld4257:~ # dd if=/dev/zero of=/mnt/ceph-fuse/MTY/128MBfile bs=64M count=2 >> 2+0 records in >> 2+0 records out >> 134217728 bytes (134 MB, 128 MiB) copied, 0.351206 s, 382 MB/s >> >> This file is created correctly, and the utilization statistcs confirm it: >> ld4257:~ # rados df >> pool name KB objects clones degraded unfound rd rd KB wr wr KB >> hdb-backup 131072 32 0 0 0 8 8 43251 88572586 >> hdb-backup_metadata 27920 27 0 0 0 301 168115 6459 55386 >> rbd 0 0 0 0 0 0 0 0 0 >> templates 0 0 0 0 0 0 0 0 0 >> total used 9528188 59 >> total avail 811829446772 >> total space 811838974960 >> >> Question: >> Why can I create a file with size 128MB after defining a quota of 100MB? > > What kernel version does the client use? Quotas rely on client support. > > Also, quotas are lazy and can take a bit of time before they start to block writes. > > Wido > >> THX >> _______________________________________________ >> ceph-users mailing list >> ceph-users@xxxxxxxxxxxxxx >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com ld4257:~ # uname -r 4.4.59-92.24-default In the meantime I have created 4 files of 210MB space allocation in total: ld4257:~ # ll -h /mnt/ceph-fuse/MTY/ total 210M -rw-r--r-- 1 root root 100M Jul 26 13:40 100MBfile_from_ld4257 -rw-r--r-- 1 root root 10M Jul 26 11:54 10MBfile_from_ld4257 -rw-r--r-- 1 root root 50M Jul 26 11:55 50MBfile_from_ld2398 -rw-r--r-- 1 root root 50M Jul 26 11:56 50MBfile_from_ld4257 _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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