This is the issue, Mark. Thanks for the feedback. Our move to SLES10 is becoming more imminent.
...Nick. -----Original Message----- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Mark Perry Sent: Friday, March 21, 2008 11:47 AM To: LINUX-390@VM.MARIST.EDU Subject: Re: NFS V4 Server for SLES9 Sorry! I do see the potential problem you are in - if Websphere is using flock(). The source code explicitly state no BSD flocks " * No BSD flocks over NFS allowed.' (See code excerpt below) The code on SLES10 has an flock() function and it looks to me like it will convert flock() to a POSIX lock. Not sure if thats what you want, but I think using SLES10 is your only option. (With NFS V3 or V4) mark From fs/nfs/file.c: /* * Lock a (portion of) a file */ int nfs_lock(struct file *filp, int cmd, struct file_lock *fl) { struct inode * inode = filp->f_mapping->host; int status = 0; int status2; dprintk("NFS: nfs_lock(f=%s/%ld, t=%x, fl=%x, r=%Ld:%Ld)\n", inode->i_sb->s_id, inode->i_ino, fl->fl_type, fl->fl_flags, (long long)fl->fl_start, (long long)fl->fl_end); if (!inode) return -EINVAL; /* No mandatory locks over NFS */ if ((inode->i_mode & (S_ISGID | S_IXGRP)) == S_ISGID) return -ENOLCK; if (NFS_PROTO(inode)->version != 4) { /* Fake OK code if mounted without NLM support */ if (NFS_SERVER(inode)->flags & NFS_MOUNT_NONLM) { if (IS_GETLK(cmd)) status = LOCK_USE_CLNT; goto out_ok; } } /* * No BSD flocks over NFS allowed. * Note: we could try to fake a POSIX lock request here by * using ((u32) filp | 0x80000000) or some such as the pid. * Not sure whether that would be unique, though, or whether * that would break in other places. */ if (!fl->fl_owner || !(fl->fl_flags & FL_POSIX)) return -ENOLCK; ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 This email is intended for the recipient only. If you are not the intended recipient please disregard, and do not use the information for any purpose. ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
