- Original Message -
From: Pranith Kumar Karampuri pkara...@redhat.com
To: jGluster Devel gluster-devel@gluster.org
Sent: Thursday, May 29, 2014 3:37:37 PM
Subject: Re: [Gluster-devel] regarding fsetattr
- Original Message -
From: Pranith Kumar Karampuri pkara...@redhat.com
To: jGluster Devel gluster-devel@gluster.org
Cc: Brian Foster bfos...@redhat.com
Sent: Thursday, May 29, 2014 3:08:33 PM
Subject: regarding fsetattr
hi,
When I run the following program on fuse mount it fails with ENOENT.
When
I look at the mount logs, it prints error for setattr instead of
fsetattr. Wondering anyone knows why the fop comes as setattr instead of
fsetattr.
Log:
[2014-05-29 09:33:38.658023] W [fuse-bridge.c:1056:fuse_setattr_cbk]
0-glusterfs-fuse: 2569: SETATTR()
gfid:ae44dd74-ff45-42a8-886e-b4ce2373a267 = -1 (No such file or
directory)
Program:
#include stdio.h
#include unistd.h
#include sys/types.h
#include sys/stat.h
#include fcntl.h
#include errno.h
#include string.h
int
main ()
{
int ret = 0;
int fd=open(a.txt, O_CREAT|O_RDWR);
if (fd 0)
printf (open failed: %s\n, strerror(errno));
ret = unlink(a.txt);
if (ret 0)
printf (unlink failed: %s\n, strerror(errno));
if (write (fd, abc, 3) 0)
printf (Not able to print %s\n, strerror (errno));
ret = fchmod (fd, S_IRUSR|S_IWUSR|S_IXUSR);
if (ret 0)
printf (fchmod failed %s\n, strerror(errno));
return 0;
}
Based on vijay's inputs I checked in fuse-brige and this is what I see:
1162 if (fsi-valid FATTR_FH
1163 !(fsi-valid (FATTR_ATIME|FATTR_MTIME))) {
1164 /* We need no loc if kernel sent us an fd and
1165 * we are not fiddling with times */
1166 state-fd = FH_TO_FD (fsi-fh);
(gdb)
1167 fuse_resolve_fd_init (state, state-resolve,
state-fd);
1168 } else {
1169 fuse_resolve_inode_init (state, state-resolve,
finh-nodeid);
1170 }
1171
(gdb) p fsi-valid
$4 = 1
(gdb) p (fsi-valid FATTR_FH)
$5 = 0
(gdb)
fsi-valid doesn't have FATTR_FH. Who is supposed to set it?
had a discussion with brian foster on IRC.
The issue is that gluster depends on client fd to be passed down to perform the
operations where as setattr is sent on an inode from vfs to fuse and since
gluster doesn't have any reference to inode once unlink happens, this issue is
seen. I will have one more conversation with brian to find what needs to be
fixed.
Pranith.
Pranith
Pranith
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