Thomas Schoebel-Theuer
0f9f2b404d
light: protect copy against concurrent logfile updates
2013-01-23 20:06:58 +01:00
Thomas Schoebel-Theuer
28d433cc81
trans_logger: fix potential race on log_input
...
During logrotate, there may exist writeback clusters
with mixed log_inputs. Each sub_mref now gets its individual
log_input inherited from the orig_mref. Add ref counting
to ensure that cleanup can never occur on an active log_input.
2013-01-23 20:06:57 +01:00
Thomas Schoebel-Theuer
ec69356a14
trans_logger: make completion_semantics configurable
2013-01-23 20:06:57 +01:00
Thomas Schoebel-Theuer
7b905f93ad
trans_logger: limit q0 length
2013-01-23 20:06:57 +01:00
Thomas Schoebel-Theuer
fa12becf00
trans_logger: add CRC checksumming of data
...
Off by default, since it may hurt performance.
2013-01-23 20:06:56 +01:00
Thomas Schoebel-Theuer
d9cbea66c2
aio: do mapfree_pages() via background thread
...
This is crucial for performance, since invalidate_mapping_pages()
may take a long time and consume a lot of CPU.
Decouple it from time-critical worker threads.
2013-01-23 20:06:56 +01:00
Thomas Schoebel-Theuer
ce41cdee2b
server: lockless dent shipping
2013-01-23 20:06:54 +01:00
Thomas Schoebel-Theuer
2d225065c8
light: use new lamport timestamp semantics
2013-01-23 20:06:54 +01:00
Thomas Schoebel-Theuer
f7b5369468
infra: automatic timestamps in mars_symlink()
2013-01-23 20:06:54 +01:00
Thomas Schoebel-Theuer
f7331fccf3
infra: fix readlink
2013-01-23 20:06:54 +01:00
Thomas Schoebel-Theuer
e108777ff8
light: new sematics of version links
2013-01-23 20:06:54 +01:00
Thomas Schoebel-Theuer
7a01e6a5a8
trans_logger: update symlinks via callback
2013-01-23 20:06:54 +01:00
Thomas Schoebel-Theuer
0ef119edd1
infra: intoduce brick_yield()
2013-01-23 20:06:54 +01:00
Thomas Schoebel-Theuer
7b998de219
infra: add mars_readlink()
2013-01-23 20:06:53 +01:00
Thomas Schoebel-Theuer
ab7766e829
infra: qiet harmless stat error
2013-01-23 20:06:53 +01:00
Thomas Schoebel-Theuer
2f74813ce6
light: fix opportunity for bad end_pos computation
2013-01-23 20:06:52 +01:00
Thomas Schoebel-Theuer
1a25b0c57a
light: fix hangs caused by bad replay links
2013-01-23 20:06:52 +01:00
Thomas Schoebel-Theuer
3aebe8de7f
mars_proc: improve naming conventions and access flags
2013-01-23 20:06:52 +01:00
Thomas Schoebel-Theuer
58a0db4280
light: improve debugging of replaylink
2013-01-23 20:06:52 +01:00
Thomas Schoebel-Theuer
db19f86347
if: allow open() only when switched on
2013-01-23 20:06:51 +01:00
Thomas Schoebel-Theuer
d1469b5b83
infra: better statistics on object/aspect allocations
2013-01-23 20:06:51 +01:00
Thomas Schoebel-Theuer
23c4a1cc57
proc: show lamport clock in /proc/sys/mars/
2013-01-23 20:06:51 +01:00
Thomas Schoebel-Theuer
af5c95317c
light: fix potential NULL ptr deref
2013-01-23 20:06:51 +01:00
Thomas Schoebel-Theuer
3f4e86427d
infra: remove timeout on brick deletion
...
in any case, infinite waiting is better than bombing
due to deallocated memory where threads try to continually
work on.
2013-01-23 20:06:51 +01:00
Thomas Schoebel-Theuer
43a6c2239c
net: fix release and re-open of sockets
2013-01-23 20:06:51 +01:00
Thomas Schoebel-Theuer
d07aaa75c3
net: speedup struct communication
2013-01-23 20:06:51 +01:00
Thomas Schoebel-Theuer
bcea0eac40
infra: fix memleak on remote dent lists
2013-01-23 20:06:51 +01:00
Thomas Schoebel-Theuer
d0b5b7ce48
brick_say: allow delaying callers upon overflow
2013-01-23 20:06:50 +01:00
Thomas Schoebel-Theuer
a1ec9ec5db
light: fix memory leak in rot destruction
2013-01-23 20:06:50 +01:00
Thomas Schoebel-Theuer
932a4c56ef
debugging: show caller line at *path_make() and friends
2013-01-23 20:06:50 +01:00
Thomas Schoebel-Theuer
8490dcc7bc
light: add statusfile_rollover
2013-01-23 20:06:50 +01:00
Thomas Schoebel-Theuer
87631d14fc
all: make rmmod more robust when requests are flying
2013-01-23 20:06:50 +01:00
Thomas Schoebel-Theuer
5041dd1cf4
mem: show raw statistics in /proc
2013-01-23 20:06:50 +01:00
Thomas Schoebel-Theuer
f88c3c12ad
brick_say: separate logfiles for each resource
2013-01-23 20:06:50 +01:00
Thomas Schoebel-Theuer
fdd3b251c0
all: replace kthread by brick_thread wrapper
2013-01-23 20:06:50 +01:00
Thomas Schoebel-Theuer
47040b5798
brick_say: implement status files via intermediate .tmp files
2013-01-23 20:06:49 +01:00
Thomas Schoebel-Theuer
569e70eb90
light: delay shutdown if buffer memory is in use
2013-01-23 20:06:49 +01:00
Thomas Schoebel-Theuer
4b94866c80
light: parameterize aio instances correctly
2013-01-23 20:06:49 +01:00
Thomas Schoebel-Theuer
e7f88c84d6
infra: rewrite brick_say to work with threads
...
It was cumbersome to write to files in / after in_interrupt() & co.
A master write thread will also reduce the peak IO parallelism
on log data in /mars .
Further work has to be done to utilize non-default write channels.
2013-01-23 20:06:49 +01:00
Thomas Schoebel-Theuer
c319230fa1
all: IO scheduling improvements, tuning
...
Dastically boost random write performance on RAID controllers with BBUs.
Writeback is only performed when there is no IO contention / starvation.
The old IO contention controller was suited to workstations.
Now server loads are well-controlled even when BBUs are present.
2013-01-23 20:06:49 +01:00
Thomas Schoebel-Theuer
9016c81057
light: report timestamp of replay in actual-*
2013-01-20 23:24:30 +01:00
Thomas Schoebel-Theuer
06e6ff0973
proc: show actual traffic rates
2013-01-20 23:24:30 +01:00
Thomas Schoebel-Theuer
23c8af994c
proc: show actual mem usage in /proc/sys/mars/
2013-01-20 23:24:30 +01:00
Thomas Schoebel-Theuer
261fc98d4a
light: use limiter for display of rates
2013-01-20 23:24:30 +01:00
Thomas Schoebel-Theuer
37c4e34f76
all: port to kernel 3.2
2013-01-20 23:24:30 +01:00
Thomas Schoebel-Theuer
11c7900acb
all: replace msleep() by brick_msleep()
2013-01-20 23:24:30 +01:00
Thomas Schoebel-Theuer
c1ba96f0a0
all: fix race on close of transaction log
2013-01-20 23:24:29 +01:00
Thomas Schoebel-Theuer
5365063c58
light: fix invalid version links based on outdated prev version
2013-01-20 23:24:29 +01:00
Thomas Schoebel-Theuer
64d6397711
light: fix invalid version links at logrotate (ITOPWPT-225)
2013-01-20 23:24:29 +01:00
Thomas Schoebel-Theuer
64849f9949
light: better ERR reporting in _update_versionlink()
2013-01-20 23:24:29 +01:00
