I have a process that runs ok on the local file system, but hang on filer strace show that the last thing is tryong to do is acquire a lock
17:27:24 access("/netapp/file", W_OK) = 0 <0.000013> 17:27:24 fstat64(13, {st_mode=S_IFREG|0755, st_size=741376, ...}) = 0 < 0.000007> 17:27:24 fcntl64(13, F_SETLK, {type=F_RDLCK, whence=SEEK_SET, start=0, len=0}
and it hangs on filer run the lock status -h and sm_mon -l <hostname> ...nothing yet....there is a hostname in /etc/sm/monitor file What is wrong?
Could be a poorly formed firewall rule that allows one way communication. In other words, a lock may be requested on a port. The filer responds on the same port but the return traffic is dropped (not rejected, dropped as rejecteded implies a response).
Usually a netstat -a on the client shows the culprit port.
--tmac
Sent from my Verizon Wireless BlackBerry
-----Original Message----- From: "Linux Admin" sysadmin.linux@gmail.com
Date: Wed, 19 Dec 2007 17:55:16 To:"NetApp Toasters List" toasters@mathworks.com Subject: file locking problem?
I have a process that runs ok on the local file system, but hang on filer strace show that the last thing is tryong to do is acquire a lock
17:27:24 access("/netapp/file", W_OK) = 0 <0.000013> 17:27:24 fstat64(13, {st_mode=S_IFREG|0755, st_size=741376, ...}) = 0 <0.000007> 17:27:24 fcntl64(13, F_SETLK, {type=F_RDLCK, whence=SEEK_SET, start=0, len=0}
and it hangs on filer run the lock status -h and sm_mon -l <hostname> ...nothing yet....there is a hostname in /etc/sm/monitor file What is wrong?
Tim, Thanks! No firewall at all....same segment all working before. The strange thing the netapp2 show 3 lines when you do
netapp2 lock status -f ========19081845:00000040 ========19081845:00000060 ========19081845:006352a7
it's cluster node netapp1 has hundreds of locks
On Dec 19, 2007 6:38 PM, Tim McCarthy tmacmd@gmail.com wrote:
Could be a poorly formed firewall rule that allows one way communication. In other words, a lock may be requested on a port. The filer responds on the same port but the return traffic is dropped (not rejected, dropped as rejecteded implies a response).
Usually a netstat -a on the client shows the culprit port.
--tmac
Sent from my Verizon Wireless BlackBerry
-----Original Message----- From: "Linux Admin" sysadmin.linux@gmail.com
Date: Wed, 19 Dec 2007 17:55:16 To:"NetApp Toasters List" toasters@mathworks.com Subject: file locking problem?
I have a process that runs ok on the local file system, but hang on filer strace show that the last thing is tryong to do is acquire a lock
17:27:24 access("/netapp/file", W_OK) = 0 <0.000013> 17:27:24 fstat64(13, {st_mode=S_IFREG|0755, st_size=741376, ...}) = 0 < 0.000007> 17:27:24 fcntl64(13, F_SETLK, {type=F_RDLCK, whence=SEEK_SET, start=0, len=0}
and it hangs on filer run the lock status -h and sm_mon -l <hostname> ...nothing yet....there is a hostname in /etc/sm/monitor file What is wrong?
Could be an ontap bug. What version u have?
--tmac Sent from my Verizon Wireless BlackBerry
-----Original Message----- From: "Linux Admin" sysadmin.linux@gmail.com
Date: Wed, 19 Dec 2007 18:40:53 To:tmacmd@gmail.com Cc:owner-toasters@mathworks.com,"NetApp Toasters List" toasters@mathworks.com Subject: Re: file locking problem?
Tim, Thanks! No firewall at all....same segment all working before. The strange thing the netapp2 show 3 lines when you do
netapp2 lock status -f ========19081845:00000040 ========19081845:00000060 ========19081845:006352a7
it's cluster node netapp1 has hundreds of locks
On Dec 19, 2007 6:38 PM, Tim McCarthy <tmacmd@gmail.com mailto:tmacmd@gmail.com > wrote: Could be a poorly formed firewall rule that allows one way communication. In other words, a lock may be requested on a port. The filer responds on the same port but the return traffic is dropped (not rejected, dropped as rejecteded implies a response).
Usually a netstat -a on the client shows the culprit port.
--tmac
Sent from my Verizon Wireless BlackBerry
-----Original Message----- From: "Linux Admin" < sysadmin.linux@gmail.com mailto:sysadmin.linux@gmail.com >
Date: Wed, 19 Dec 2007 17:55:16 To:"NetApp Toasters List" <toasters@mathworks.com mailto:toasters@mathworks.com > Subject: file locking problem?
I have a process that runs ok on the local file system, but hang on filer strace show that the last thing is tryong to do is acquire a lock
17:27:24 access("/netapp/file", W_OK) = 0 < 0.000013> 17:27:24 fstat64(13, {st_mode=S_IFREG|0755, st_size=741376, ...}) = 0 <0.000007> 17:27:24 fcntl64(13, F_SETLK, {type=F_RDLCK, whence=SEEK_SET, start=0, len=0}
and it hangs on filer run the lock status -h and sm_mon -l <hostname> ...nothing yet....there is a hostname in /etc/sm/monitor file What is wrong?
-
Linux Admin -
Tim McCarthy