Re: OSDs don't actually delete files when two CephFS (or more) are in use

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Hi.

I wait about more than 15 minutes. I was doing some benchmark when I
noticed that the space never go back to normal..

How can I disable this behavior? It's on Ceph side?

With one client, OSD are cleaned after few seconds, this sounds normal

2012/12/10 Sam Lang <sam.lang@xxxxxxxxxxx>:
> On 12/10/2012 08:29 AM, Geoffrey Hartz wrote:
>>
>> Hi!
>>
>> I'm new to Ceph and I have a strange behavior with CephFS
>>
>> Config is :
>>
>> Ubuntu 12.04
>> Kernel 3.6.9
>> Ceph V0.55
>>
>> 2 OSD, 1 mon, 1 MDS, all on same host
>> 2 clients, separate Hosts
>>
>> Ceph.conf:
>>
>> http://paste.ubuntu.com/1423712/
>>
>> To mount the share I use : sudo ceph-fuse -m 192.168.80.139:6789 /mnt
>>
>> When I create a file on one client, the other see the file, can be
>> downloaded etc.
>>
>> But when I delete the file, both clients don't see the file anymore
>> BUT the file is still there on OSD (using space disk).
>
>
> Removing a file removes the directory entry (as you've seen), but the inode
> itself doesn't get removed until all references to it are dropped.  The
> clients may cache the capability for those inodes for a period of time, so
> you're not seeing the references drop until they get evicted from the cache.
> Unmounting ensures that they get evicted from the client caches, so all
> references go to zero.
>
> Also, removal of the underlying objects is done lazily, so you may not see
> the space get freed up right away.
>
> -sam
>
>>
>> When I umount from BOTH clients, OSD are update and file is actually
>> delete (same behavior with mount -t ceph)
>>
>> I'm missing something?
>>
>> Thanks!
>>
>> --
>> Geoffrey HARTZ
>> --
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>



-- 
Geoffrey HARTZ
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