On 01/11/11 02:11 PM, Shain Miley wrote:
Cindy,
Thanks a lot for this info.
These errors are occurring in/with our attempts to use Glusterfs
(gluster.org) on top of zfs. It is only happening on a small number of
our total files so far...but it is happening non the less.
Gluster requires extended attributes in order to work correctly.
I was under the impression that SUNWattr_ro and SUNWattr_rw are part of
the 'extensible attributes interfaces' (although I am piecing this
together from several different sources).
Does the procedure that you describe below allow me to continue to use
extended attributes, or does that simply disable them altogether?
Here is an example of the a file placed on the filesystem via Gluster:
smi...@server1:/smbpool/glusterfs# runat audio/ ls -l
total 11
-r--r--r-- 1 root root 84 Jan 9 13:13 SUNWattr_ro
-rw-r--r-- 1 root root 408 Jan 9 13:13 SUNWattr_rw
-rwxrwxrwx 1 root root 12 Jan 9 13:13 trusted.afr.171.19.13.193-1
-rwxrwxrwx 1 root root 12 Jan 9 13:13 trusted.afr.171.19.13.192-1
-rwxrwxrwx 1 root root 8 Jan 8 15:34 trusted.posix1.gen
According to the support team at Gluster they are not adding them (which
I know is true) and their software should be ignoring them for the most
part.
Here is an example from the error log (just so you are clear as to what
we are talking about):
[2011-01-07 16:49:31] E [compat.c:206:solaris_setxattr] libglusterfs:
Couldn't set extended attribute for /smbpool/glusterfs/audio (13)
[2011-01-07 16:49:31] E [posix.c:3056:handle_pair] posix1:
/smbpool/glusterfs/audio: key:SUNWattr_ro error:Permission denied
I am hoping to get some more verbose output tonight when I increase the
logging level and restart the cluster.
Thanks again,
Shain
Did you see this error when copying a file from one part of the
glusterfs to the other? One thing I can think of that might be
happening is that they are trying to copy all extended attributes from
an existing file to a new copy, and really they should skip over the
system attributes, they'll be created in the copy automatically.
-tim
On 01/11/2011 03:31 PM, Cindy Swearingen wrote:
Hi Shain,
You can't disable the system extended attributes and they shouldn't
cause any problem unless you are accessing files with these
attributes on systems that run Solaris 10 releases, which don't
understand how to translate them.
Is this is cause of the permission denied errors?
If you want to disable users from creating them, then remount
the the file system with noxattr.
See the output below of how the attr creation succeeds and
then errors after the file system is mounted with noxattr.
Or, you can create a file system with noaxttr on, like this:
# zfs create -o xattr=off rpool/fs4
Thanks,
Cindy
# zfs create rpool/fs3
# cd /rpool/fs3
# touch file.1
# runat file.1 ls -l
total 1
-r--r--r-- 1 root root 156 Jan 11 13:23 SUNWattr_ro
-rw-r--r-- 1 root root 472 Jan 11 13:23 SUNWattr_rw
# runat file.1 touch attr_1
# runat file.1 ls -l
total 2
-r--r--r-- 1 root root 156 Jan 11 13:23 SUNWattr_ro
-rw-r--r-- 1 root root 472 Jan 11 13:23 SUNWattr_rw
-rw-r--r-- 1 root root 0 Jan 11 13:23 attr_1
# cd /
# zfs umount rpool/fs3
# zfs mount -o noxattr rpool/fs3
# cd /rpool/fs3
# touch file.2
# runat file.2 ls -l
total 1
-r--r--r-- 1 root root 156 Jan 11 13:23 SUNWattr_ro
-rw-r--r-- 1 root root 472 Jan 11 13:23 SUNWattr_rw
# runat file.2 touch attr_1
touch: setting times of `attr_1': Invalid argument
On 01/11/11 10:29, Shain Miley wrote:
Hello,
I was wondering if there is any way to disable the SUNWattr_ro and
SUNWattr_rw file attributes in OpenSolaris.
I am receiving some permission denied error messages assocaited with
SUNWattr_ro on some files. It has been suggested that there is a way
to disable them, or remove them, etc. However I have been unable to
find any information about doing so.
Example:
ad...@server1:/ztank/temp# touch test
ad...@server1:/ztank/temp# runat test ls -l
total 2
-r--r--r-- 1 root root 84 Jan 11 11:58 SUNWattr_ro
-rw-r--r-- 1 root root 408 Jan 11 11:58 SUNWattr_rw
Thanks in advance,
Shain
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