rsync --xattrs w/ nfs

[Eric Shubert]

Eric Shubert wrote:
> Eric Shubert wrote:
>> I could use a little help.
>>
>> I'm trying to rsync w/ --xattrs to a mounted nfs filesystem, and get 
>> the following error on each file:
>>  rsync_xal_set: lsetxattr user.DOSATTRIB failed: Operation not supported
>> The rsync works fine w/out the --xattrs option. This appears to 
>> indicate that xattr isn't enabled on the destination side.
>>
>> Both hosts are running current CentOS5.4, and I'm running as root 
>> (just for testing).
>>
>> The source files contain the user.DOSATTRIB attributes from samba:
>>         map archive = no
>>         map hidden = no
>>         map read only = no
>>         map system = no
>>         store dos attributes = yes
>>         dos filemode = yes
>> and the source filesystem (ext3) has xattr enabled:
>> # tune2fs -l /dev/mapper/VolGroup00-LogVol00 | grep attr
>> Filesystem features:      has_journal ext_attr resize_inode dir_index 
>> filetype needs_recovery sparse_super large_file
>> Default mount options:    user_xattr acl
>>
>> The remote host has xattr enabled as well:
>> # tune2fs -l /dev/md7 | grep attr
>> Filesystem features:      has_journal ext_attr resize_inode dir_index 
>> filetype needs_recovery sparse_super large_file
>> Default mount options:    user_xattr acl
>>
>> I've added user_xattr specifically to the fstab entry on the 
>> destination side, in case the default mount option wasn't taking:
>> # cat /etc/fstab | grep md7
>> /dev/md7       /udat       ext3    user_xattr,acl  1 2
>>
>> Autofs mounts nfs with the following options:
>> -async,auto,rw,suid,user_xattrs,acl,fstype=nfs,rsize=32768,wsize=32768,intr 
>>
>>
>> I'm guessing that nfs is likely the problem, but from googling a bit, 
>> it appears that nfs should pass xattr values just fine. Perhaps this 
>> is incorrect.
>>
>> Does anyone have an idea why I'm getting this error?
>> Solution?
>> TIA.
>>
> 
> On further review, it appears that nfs on COS5.4 doesn't support xattrs. 
> I'll try mounting with cifs and see how that works. I'm guessing it'll 
> work better, given that rsync and samba come from the same place for the 
> most part. ;)
> 

Just for the record, mounting with cifs didn't work either. /proc/mounts 
  did not show the xattrs option in either case. So I'm guessing that 
xattrs on a remote cifs is just not supported yet, although I'm not 
quite certain what is missing. The kernel appears to have xattr enabled:
# grep -i attr /boot/config-2.6.18-128.2.1.el5
CONFIG_RAID_ATTRS=m
CONFIG_SCSI_SPI_ATTRS=m
CONFIG_SCSI_FC_ATTRS=m
CONFIG_SCSI_ISCSI_ATTRS=m
CONFIG_SCSI_SAS_ATTRS=m
CONFIG_EXT2_FS_XATTR=y
CONFIG_EXT3_FS_XATTR=y
CONFIG_EXT4DEV_FS_XATTR=y
# CONFIG_JFFS2_FS_XATTR is not set
CONFIG_CIFS_XATTR=y

Anyone know why xattrs on a (mounted) remote fs (nfs and/or cifs) 
wouldn't work? I think the code for NFS isn't in the COS5 kernel, but I 
really expected cifs would work.

Anyhow, I just rsync'd w/ --xattr over ssh and that worked fine.
Moving on. :)

-- 
-Eric 'shubes'