> Op 26 juli 2017 om 13:43 schreef c.monty@xxxxxx: > > > 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 > Hmm, thinking about it, I don't think the kernel supports CephFS quotas yet. Somebody else might be able to confirm, but afaik it's not supported. Wido > 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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