ZhengYan, I set "mds_bal_fragment_size_max = 100000, mds_bal_frag = true", then I write 100000 files named 512k.file$i, but there are still some file is missing. such as : [root@yj43959-ceph-dev cephfs]# find ./volumes/ -type f | wc -l 91070
donglifec...@gmail.com From: Yan, Zheng Date: 2017-09-08 15:20 To: donglifec...@gmail.com CC: ceph-users; marcus.haarmann Subject: Re: [ceph-users]cephfs(Kraken 11.2.1), Unable to write more file when one dir more than 100000 files, mds_bal_fragment_size_max = 5000000 > On 8 Sep 2017, at 13:54, donglifec...@gmail.com wrote: > > ZhengYan, > > I'm sorry, just a description of some questions. > > when one dir more than 100000 files, I can continue to write it , but I don't > find file which wrote in the past. for example: > 1. I write 100000 files named 512k.file$i > > 2. I continue to write 10000 files named aaa.file$i > > 3. I continue to write 10000 files named bbb.file$i > > 4. I continue to write 10000 files named ccc.file$i > > 5. I continue to write 10000 files named ddd.file$i > > 6. I can't find all ddd.file$i, some ddd.file$i missing. such as: > > [root@yj43959-ceph-dev scripts]# find /mnt/cephfs/volumes -type f | grep > 512k.file | wc -l > 100000 > [root@yj43959-ceph-dev scripts]# ls /mnt/cephfs/volumes/aaa.file* | wc -l > 10000 > [root@yj43959-ceph-dev scripts]# ls /mnt/cephfs/volumes/bbb.file* | wc -l > 10000 > [root@yj43959-ceph-dev scripts]# ls /mnt/cephfs/volumes/ccc.file* | wc -l > 10000 > [root@yj43959-ceph-dev scripts]# ls /mnt/cephfs/volumes/ddd.file* | wc -l > // some files missing > 1072 It’s likely caused by http://tracker.ceph.com/issues/18314. To support very large directory, you should enable directory fragment instead of enlarge mds_bal_fragment_size_max. Regards Yan, Zheng > > <InsertPic_.png> > > donglifec...@gmail.com > > From: donglifec...@gmail.com > Date: 2017-09-08 13:30 > To: zyan > CC: ceph-users > Subject: [ceph-users]cephfs(Kraken 11.2.1), Unable to write more file when > one dir more than 100000 files, mds_bal_fragment_size_max = 5000000 > ZhengYan, > > I test cephfs(Kraken 11.2.1), I can't write more files when one dir more > than 100000 files, I have already set up "mds_bal_fragment_size_max = > 5000000". > > why is this case? Is it a bug? > > Thanks a lot. > > donglifec...@gmail.com
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