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Re: [Gluster-devel] Problem with afr_setxattr_cbk on 1.3.4


From: Anand Babu Periasamy
Subject: Re: [Gluster-devel] Problem with afr_setxattr_cbk on 1.3.4
Date: Fri, 12 Oct 2007 01:30:52 -0700

You have copying a file /mnt/sharedbig/test6.jpg that has ACL
permissions. In order to use ACL, you need extended attributes support
in your underlying disk file system. GlusterFS should handle
ACL/Extended-Attributes correctly.
If you are using Ext3 as your backend disk filesystem, extended
attributes are not enabled by default. To enable extended
attributes..
Example /etc/fstab entry:
/dev/sda2  /export  ext3  defaults,user_xattr   0   1

Edit your fstab like the line above and remount
# mount -o remount /export

Krishna Srinivas writes:
getxattr("/www/thumbs/originals/0/199/199000_0.jpg",
"system.posix_acl_access", 0xbfe6e9f0, 132) = -1 EOPNOTSUPP (Operation
not supp
orted)
setxattr("/mnt/sharedbig/test6.jpg", "system.posix_acl_access",
"\x02\x00\x00\x00\x01\x00\x07\x00\xff\xff\xff\xff\x04\x00\x07\x00\xf
f\xff\xff\xff \x00\x07\x00\xff\xff\xff\xff", 28, 0) = -1 EOPNOTSUPP
(Operation not supported)
chmod("/mnt/sharedbig/test6.jpg", 0100777) = 0
unlink("/www/thumbs/originals/0/199/199000_0.jpg") = 0

It is trying to set some ACL related xattrs and failing in the
backend. I think it is harmless. What distribution are you using?


close(1)                                = 0
exit_group(0)

Krishna Srinivas wrote:
> Hi Karl,
>
> Can you paste strace of mv command when you see those errors
> in the log? The last few relavent lines of the strace outout will do.
> you can use the -o option for specifying output file.
>
> strace -o /tmp/mv.log mv file1 file2
>
> Krishna
>
> On 10/11/07, Karl Bernard <address@hidden> wrote:
>
>> Krishna,
>>
>> I only get those errors with a "mv", I tried a cp and I don't see those
>> errors.
>> getfattr --dump on both the original and copied files return no error
>> but an empty string
>>
>> Amar,
>>
>> My filesystem was not originally mounted with the specific option
>> user_xattr, however it is my understanding CentOS has it enabled by
>> default. I later added the mount option but still get the errors.
>> /dev/mapper/VolGroup00-data on /data type ext3
>> (rw,noatime,nodiratime,user_xattr)
>>
>> I tried soing the same mv operation as root on the client and the same
>> errors  get logged.
>>
>> Karl
>>
>> Krishna Srinivas wrote:
>>
>>> are you just doing mv? or any other specific command?
>>> Can you do a "getfattr --dump" on the original and copied
>>> file and see if there are any differences.
>>>
>>> Thanks
>>> Krishna
>>>
>>>
>>>
>> Amar S. Tumballi wrote:
>>
>>> Karl,
>>>   can you check if your backend filsystem has been mounted with -o
>>> user_xattr (option in fstab). Also, do you get the same problem when
>>> you try to access the files via glusterfs as root (on the client side)?
>>>
>>> thanks
>>>
>>> On 10/11/07, Karl Bernard <address@hidden> wrote:
>>>
>>>
>>>> Hello All.
>>>>
>>>> I'm having some issues copying files from local filesystem to gluster.
>>>> The files seem to get copied fine, however I get tons of log errors.
>>>>
>>>> The errors I get:
>>>> 2007-10-10 17:41:20 E [afr.c:1120:afr_setxattr_cbk] afr3-4:
>>>> (path=/dev-www.sxx.com/thumbnails/originals/thumbs/0/107/107668_1.jpg
>>>> child=sxx03) op_ret=-1 op_errno=95
>>>>
>>>> I'm doing a mv and each error repeats 4 times.
>>>>
>>>> I've made sure Extended Attributes where enabled. and tested doing:
>>>> setfattr -n user.test -v 1
>>>> 
/data/glusterfs/dataspace/dev-www.sxx.com/thumbnails/originals/thumbs/0/107/107668_1.jpg
>>>>
>>>> Version:
>>>>   glusterfs-1.3.4
>>>>   fuse-2.7.0-glfs4
>>>>
>>>> here's some debug log. Can anyone suggest what might be wrong? I can
>>>> post more info on my setup if needed.


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