[Gluster-devel] can't make dht work

[Dan Parsons]

I think I have possibly found some more useful information on this  
issue.

It appears that the problem only happens if my first write to dht is  
with 'dd'. If I copy a normal file to the system first, everything  
works fine from that point forward.

However, if I unmount gluster and re-mount it, even though my original  
files come back, I still have to copy a regular file again before dd  
will work. Obviously dd is not important to my production use but it  
is sort of a disconcerting bug, I have to say.

Here's some log output:

This happens when I try to use dd first:
2009-01-13 10:45:54 E [dht-helper.c:216:dht_subvol_get_hashed] dht0:  
layout missing path=/ddtest.txt parent=1
2009-01-13 10:45:54 E [dht.c:623:dht_lookup] dht0: no subvolume in  
layout for path=/ddtest.txt
2009-01-13 10:45:54 E [fuse-bridge.c:406:fuse_entry_cbk] glusterfs- 
fuse: 2: LOOKUP() /ddtest.txt => -1 (Invalid argument)

This happens on the first copy of a regular file to gluster:
2009-01-13 10:45:59 W [dht-layout.c:452:dht_layout_normalize] dht0:  
directory / looked up first time
2009-01-13 10:45:59 W [dht.c:132:dht_lookup_dir_cbk] dht0: fixing  
assignment on /

 From that point onwards, everything works correctly, until I unmount  
and remount, in which case I have to copy a regular file again.


Dan Parsons


On Jan 13, 2009, at 10:08 AM, Dan Parsons wrote:

> I have tried that and get the same problem every time.
>
>
> Dan Parsons
>
>
> On Jan 13, 2009, at 3:37 AM, Krishna Srinivas wrote:
>
>> Dan,
>> Can you removie the backend directories and re-create it and try  
>> this again?
>> Krishna
>>
>> On Tue, Jan 13, 2009 at 6:31 AM, Dan Parsons <dparsons at nyip.net>  
>> wrote:
>>> I'm unable to make dht work. I simply can't copy files to it  
>>> without getting
>>> the below error. If I make a subdirectory and put files inside of  
>>> that, then
>>> the problem goes away, but it seems like I must be doing something  
>>> wrong.
>>> ???
>>>
>>> Client error message:
>>> 2009-01-12 16:54:03 E [dht-helper.c:216:dht_subvol_get_hashed]  
>>> dht0: layout
>>> missing path=/test3.txt parent=1
>>> 2009-01-12 16:54:03 E [dht.c:623:dht_lookup] dht0: no subvolume in  
>>> layout
>>> for path=/test3.txt
>>> 2009-01-12 16:54:03 E [fuse-bridge.c:406:fuse_entry_cbk] glusterfs- 
>>> fuse: 2:
>>> LOOKUP() /test3.txt => -1 (Invalid argument)
>>>
>>> Command I ran:
>>> dd if=/dev/zero of=/glustertmp/test3.txt bs=1MB count=10
>>>
>>> Server config:
>>> ############################################################################
>>> # UNIFY
>>> volume posix-unify-brick
>>>      type storage/posix
>>>      option directory /distfs-storage-space/glusterfs/unify
>>> end-volume
>>>
>>> volume server
>>>      type protocol/server
>>>      option transport-type tcp
>>>      option auth.addr.posix-unify-brick.allow 10.8.101.*
>>>      subvolumes posix-unify-brick
>>> end-volume
>>>
>>> Client config:
>>> #################################################################
>>> # CLIENT-UNIFY-1
>>> volume distfs01-unify-brick
>>> type protocol/client
>>> option transport-type tcp
>>> option remote-host 10.8.101.51
>>> option remote-subvolume posix-unify-brick
>>> end-volume
>>>
>>> #################################################################
>>> # CLIENT-UNIFY-2
>>> volume distfs02-unify-brick
>>> type protocol/client
>>> option transport-type tcp
>>> option remote-host 10.8.101.52
>>> option remote-subvolume posix-unify-brick
>>> end-volume
>>>
>>> #################################################################
>>> # CLIENT-UNIFY-3
>>> volume distfs03-unify-brick
>>> type protocol/client
>>> option transport-type tcp
>>> option remote-host 10.8.101.53
>>> option remote-subvolume posix-unify-brick
>>> end-volume
>>>
>>> #################################################################
>>> # CLIENT-UNIFY-4
>>>
>>> volume distfs04-unify-brick
>>> type protocol/client
>>> option transport-type tcp
>>> option remote-host 10.8.101.54
>>> option remote-subvolume posix-unify-brick
>>> end-volume
>>>
>>> # END OF CLIENT-UNIFY
>>> ################################################################
>>>
>>> volume dht0
>>>      type cluster/dht
>>>      subvolumes distfs01-unify-brick distfs02-unify-brick
>>> distfs03-unify-brick distfs04-unify-brick
>>> end-volume
>>>
>>>
>>> Dan Parsons
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> Gluster-devel mailing list
>>> Gluster-devel at nongnu.org
>>> http://lists.nongnu.org/mailman/listinfo/gluster-devel
>>>
>>
>
>
>
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