[Linux-cluster] gfs2: st_size is 0 for symbolic links

[Nathaniel Griswold]

Hi,

I had an application fail on gfs2 today because of incorrect stat
st_size on a symlink. The application was trying to utilize the fact
that st_size on a symlink should be the character length of the
destination path.

[root at somehost somepath]# touch somefile
[root at somehost somepath]# ln -s somefile somelink
[root at somehost somepath]# stat somelink |grep Size
  Size: 0               Blocks: 8          IO Block: 4096   symbolic link
[root at somehost somepath]# gfs2_tool getargs /somepath
noatime 0
data 2
suiddir 0
quota 0
posix_acl 1
num_glockd 1
upgrade 0
debug 0
localflocks 0
localcaching 0
ignore_local_fs 0
spectator 0
hostdata jid=0:id=196612:first=1
locktable
lockproto

[root at somehost somepath]# uname -r
2.6.18-128.1.10.el5

[root at somehost somepath]# cat /etc/redhat-release
Red Hat Enterprise Linux Server release 5.3 (Tikanga)


If i go to some other host or remount the filesystem, then st_size is correct:

[root at someotherhost somepath]# stat somelink |grep Size
  Size: 8               Blocks: 8          IO Block: 4096   symbolic link

Searched archives and didn't see anything. Is this a bug?

-nate