On Sat, 18 Dec 2004, Jon Nelson wrote:
On Sat, 18 Dec 2004, Sonny Rao wrote:...
Well, I'm not really sure what I'm looking for, but I did this:
fstest -n 50 -f 10000 -s 2048
Then, in another terminal, I ran this
find . | wc -l
Boom! disk light goes out, can't do ANYTHING with that filesystem, instantly.
I got fstest (I'm pretty sure mine is old) at:
http://samba.org/ftp/unpacked/junkcode/
Also, from slabtop at the current moment:
10696 10695 99% 0.81K 2674 4 10696K jfs_ip
In this order: the contents of the files after boot, after cleaning the FS (due to the hanging), and then just a few seconds after it's hung (I can hang it almost instantly, 100% reproduceable).
=================================== Contents of: /proc/fs/jfs/lmstats ===================================
JFS Logmgr stats ================ commits = 0 writes submitted = 2 writes completed = 2 full pages submitted = 0 partial pages submitted = 0 ===================================
=================================== Contents of: /proc/fs/jfs/mpstat ===================================
JFS Metapage statistics ======================= page allocations = 12 page frees = 12 lock waits = 0 ===================================
=================================== Contents of: /proc/fs/jfs/txstats ===================================
JFS TxStats =========== calls to txBegin = 0 txBegin blocked by sync barrier = 0 txBegin blocked by tlocks low = 0 txBegin blocked by no free tid = 0 calls to txBeginAnon = 0 txBeginAnon blocked by sync barrier = 0 txBeginAnon blocked by tlocks low = 0 calls to txLockAlloc = 0 tLockAlloc blocked by no free lock = 0 ===================================
=================================== Contents of: /proc/fs/jfs/xtstat ===================================
JFS Xtree statistics ==================== searches = 5 fast searches = 0 splits = 0 ===================================
**** After clean but before test **** =================================== Contents of: /proc/fs/jfs/lmstats ===================================
JFS Logmgr stats ================ commits = 96584 writes submitted = 34132 writes completed = 34132 full pages submitted = 30797 partial pages submitted = 2373 ===================================
=================================== Contents of: /proc/fs/jfs/mpstat ===================================
JFS Metapage statistics ======================= page allocations = 1482201 page frees = 1482193 lock waits = 1 ===================================
=================================== Contents of: /proc/fs/jfs/txstats ===================================
JFS TxStats =========== calls to txBegin = 96584 txBegin blocked by sync barrier = 0 txBegin blocked by tlocks low = 37 txBegin blocked by no free tid = 0 calls to txBeginAnon = 0 txBeginAnon blocked by sync barrier = 0 txBeginAnon blocked by tlocks low = 0 calls to txLockAlloc = 1937690 tLockAlloc blocked by no free lock = 0 ===================================
=================================== Contents of: /proc/fs/jfs/xtstat ===================================
JFS Xtree statistics ==================== searches = 749112 fast searches = 74271 splits = 0 ===================================
**** While hung **** =================================== Contents of: /proc/fs/jfs/lmstats ===================================
JFS Logmgr stats ================ commits = 116220 writes submitted = 38720 writes completed = 38720 full pages submitted = 34252 partial pages submitted = 3203 ===================================
=================================== Contents of: /proc/fs/jfs/mpstat ===================================
JFS Metapage statistics ======================= page allocations = 1548192 page frees = 1547972 lock waits = 14 ===================================
=================================== Contents of: /proc/fs/jfs/txstats ===================================
JFS TxStats =========== calls to txBegin = 116224 txBegin blocked by sync barrier = 0 txBegin blocked by tlocks low = 48 txBegin blocked by no free tid = 12 calls to txBeginAnon = 10645 txBeginAnon blocked by sync barrier = 0 txBeginAnon blocked by tlocks low = 73 calls to txLockAlloc = 2131739 tLockAlloc blocked by no free lock = 5 ===================================
=================================== Contents of: /proc/fs/jfs/xtstat ===================================
JFS Xtree statistics ==================== searches = 789286 fast searches = 94616 splits = 0 ===================================
-- Jon Nelson <[EMAIL PROTECTED]> _______________________________________________ Jfs-discussion mailing list [EMAIL PROTECTED] http://www-124.ibm.com/developerworks/oss/mailman/listinfo/jfs-discussion
