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Fri, 14 Dec 2007
Linux Test Project on top of DST storage.
# pwd /mnt/ltp-full-20071130 # ./runltp -p -f fs -d `pwd`/tmp ... # cat /mnt/ltp-full-20071130/results/results.2007-12-14.11.21.41.17106 Test Start Time: Fri Dec 14 11:21:41 2007 ----------------------------------------- Testcase Result Exit Value -------- ------ ---------- gf01 PASS 0 gf02 PASS 0 gf03 PASS 0 gf04 PASS 0 gf05 PASS 0 gf06 PASS 0 gf07 PASS 0 ----------------------------------------------- Total Tests: 57 Total Failures: 0 Kernel Version: 2.6.22-rc5-dst Machine Architecture: x86_64 Hostname: uganda # mount | grep mnt /dev/dst-storage-32 on /mnt type xfs (rw) # cat /sys/devices/storage/n-0-ffff*/type R: 192.168.4.81:1025 R: 192.168.4.81:1026All 'fs' tests completed successfully, although I saw following dump in dmesg: [ 8398.605691] BUG: MAX_LOCK_DEPTH too low! [ 8398.609641] turning off the locking correctness validator.which is XFS bug. Since DST is quite dumb device, that tests will not find tricky places, but they are good to generate high load on top of given block device. /devel/dst :: Link / Comments (0)
New release of the userspace network stack.
/devel/networking/unetstack :: Link / Comments (0)
New mirroring module in the distributed storage.
$ git-diff-index --stat HEAD drivers/block/dst/alg_mirror.c drivers/block/dst/alg_mirror.c | 745 ++++++++++++++++++++-------------------- 1 files changed, 364 insertions(+), 381 deletions(-)It is cool and works good in my environment, but (like previous) it forces total mirror resync after main storage node reboot or crash (if it is required, for example when array was not in sync already and main node rebooted). I want to extend DST mirroring algorithm not to force full resync, but store a log of the writes on each node, so when new array starts, it would check not only age of the nodes (uique id stored at the end of each node, if it does not match, total resync starts), but also write log, so that the latter does not match, only selected number of regions would be synchronized. Stay tuned... /devel/dst :: Link / Comments (0) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||