Thomas Schoebel-Theuer
4b59be870e
copy: speedup by making overlap the default
...
Since commit 62e2f5944b
2013-08-06 14:30:05 +02:00
Thomas Schoebel-Theuer
3f3a4c365a
copy: fix / improve IO debugging
2013-08-06 13:09:55 +02:00
Thomas Schoebel-Theuer
94e1ac2ad0
all: remove internal URLs
2013-08-02 11:45:21 +02:00
Frank Liepold
820708e712
marsadm: command down includes disconnect
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Fixes the following bug:
marsadm down does not disconnect the resource.
2013-07-29 16:30:10 +02:00
Frank Liepold
e3db28c4d7
marsadm: correct wrong condition for checking exclusive access
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The fixed bug was introduced in commit:
marsadm: 'create-resource' --force no longer checks for exclusive access
2013-07-25 09:12:46 +02:00
Frank Liepold
2e441d0d11
marsadm: use lamport clock as mtime of symbolic links
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Fixes the following bug:
Symbolic links which are created in userspace get the current time
as mtime.
2013-07-25 08:42:27 +02:00
Thomas Schoebel-Theuer
c877c43eff
copy: limit IO parallelism via /proc
2013-07-22 09:15:53 +02:00
Thomas Schoebel-Theuer
0d8d637dee
marsadm: 'create-resource' --force no longer checks for exclusive access
2013-07-22 08:44:03 +02:00
Thomas Schoebel-Theuer
72a2537c6d
copy: make io_prio configurable via /proc
2013-07-22 08:44:03 +02:00
Thomas Schoebel-Theuer
08b27c548e
all: add lamport clock to all messages
2013-07-22 08:44:03 +02:00
Thomas Schoebel-Theuer
105bc07b58
infra: lamport clock can never appear as stopped
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In case CONFIG_HIGH_RES_TIMERS is not set (or when it does not work
as expected), the lamport clock could "stop" in some extremely
rare cases. Theoretically, a symlink update could be missed, or
two transaction log records could accidentally get the same
timestamp. We want any timestamps to be unique (at least on
the same host).
This patch ensures that true forward stepping always takes place,
even when the system clock fails (or at other problems).
For now, the dependency from CONFIG_HIGH_RES_TIMERS is left in Kconfig
as a precondition for MARS.
After some tests and some observational time, it could probably be removed
some day.
2013-07-22 08:44:03 +02:00
Frank Liepold
08d4f863ff
marsadm: command secondary must not change primary link if executed on a secondary
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Fixes the bug, that marsadm secondary sets the link <resource_dir>/primary
to (none) even if executed on a secondary host.
2013-07-22 08:44:03 +02:00
Frank Liepold
c474e17d88
light: improve info message
2013-07-22 08:44:03 +02:00
Thomas Schoebel-Theuer
ddf28af52d
marsadm: fix 'invalidate' racing against replay
2013-07-22 08:44:03 +02:00
Thomas Schoebel-Theuer
22d4516d21
trans_logger: use kb as replay limiter units
2013-07-15 12:21:16 +02:00
Thomas Schoebel-Theuer
61e5d30757
copy: use kb as limiter units
2013-07-15 12:21:16 +02:00
Thomas Schoebel-Theuer
dae1218c50
infra: fix limiter underflow
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Credits to Daniel Hermann for revealing this bug.
2013-07-15 12:21:16 +02:00
Daniel Hermann
5eae58a3a4
gen_config: allow options to be overridden by environment
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From caa2cd968be140ed3e91eeb0d30e0c006b55e17a Mon Sep 17 00:00:00 2001
From: Daniel Hermann <daniel.hermann@1und1.de>
Date: Thu, 11 Jul 2013 11:45:16 +0200
Subject: [PATCH] gen_config: allow options to be overridden by environment
2013-07-15 09:20:53 +02:00
Thomas Schoebel-Theuer
d70a415b9a
aio: fix dirty_head completion
2013-07-10 09:53:59 +02:00
Thomas Schoebel-Theuer
ea42d36a15
infra: check Kconfig prerequirements
2013-07-10 09:08:39 +02:00
Thomas Schoebel-Theuer
5103e7b46c
aio: increase robustness of file descriptors
2013-07-10 07:16:19 +02:00
Thomas Schoebel-Theuer
c9bb358239
aio: improve debugging
2013-07-10 07:16:19 +02:00
Thomas Schoebel-Theuer
764d5ed7d8
infra: fix reference counter in lib_mapfree
2013-07-09 18:50:18 +02:00
Thomas Schoebel-Theuer
acd9b194aa
light: add syncpos symlink
...
This is needed for detection of the real end of inconsistencies
after sync as finished. Consistency is only (re-)reached after
a certain amount of logfile data has been sucessfully applied.
This patch remembers the replaylink from the primary at the time
when the sync has finished.
When at least that amount of logfile data has been applied, we
are certain that now we are consistent.
2013-07-08 10:55:58 +02:00
Thomas Schoebel-Theuer
ad08afe074
light: use replay_tolerance only after failed replay attempt
2013-07-08 10:47:33 +02:00
Frank Liepold
f38c56d5ab
light: primary is more tolerant against truncated logfile
2013-07-08 10:19:38 +02:00
Thomas Schoebel-Theuer
2351f54d6f
light: fix regression caused by tolerance
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On the secondaries, switchover between logfiles could hang
when _check_logging_status() used the tolerance, but
is_switchover_possible() refused to switch over.
2013-07-05 14:35:11 +02:00
Thomas Schoebel-Theuer
156d493192
light: improve tolerance flexibility
2013-07-05 14:08:12 +02:00
Thomas Schoebel-Theuer
9a160c26ab
Kconfig: make MARS_SEPARATE_PORTS the default
2013-07-05 14:06:35 +02:00
Thomas Schoebel-Theuer
f75d402d0b
doc: add mars-manual.{lyx,pdf} (work in progress)
2013-07-04 10:23:08 +02:00
Frank Liepold
d01389e171
tests: add test suite (work in progress)
2013-07-04 10:22:39 +02:00
Thomas Schoebel-Theuer
637ec3fc4e
tools: new checking tool write-reboot.c
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Use this for testing the power blackout safety.
2013-07-04 09:06:36 +02:00
Thomas Schoebel-Theuer
e6a39cf313
tools: add provisionary logfile import/export (HACKERS ONLY)
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Use this for testing or for repair if you are extremely desperate.
This is not yet end-user friendly.
2013-07-04 09:06:36 +02:00
Thomas Schoebel-Theuer
9a104deb19
lib_log: fix length correction in the headers, cleanup
2013-07-04 08:51:36 +02:00
Thomas Schoebel-Theuer
82e7f1b823
lib_log: move log_scan() to header file
2013-07-04 08:46:14 +02:00
Thomas Schoebel-Theuer
295b0f4ada
marsadm: relax precondition for create-resource
2013-07-04 07:21:01 +02:00
Thomas Schoebel-Theuer
62e2f5944b
aio: finally fix race on dirty area at the end
2013-07-04 07:21:01 +02:00
Thomas Schoebel-Theuer
83b75845c3
aio: remove obsolete clever_sync
2013-07-04 07:21:01 +02:00
Thomas Schoebel-Theuer
d4338032bb
logger: make writeback more resilient
2013-07-04 07:21:01 +02:00
Thomas Schoebel-Theuer
e0d980223b
marsadm: wait-cluster has-device waits for actual device appearance
2013-07-04 07:21:01 +02:00
Thomas Schoebel-Theuer
0f4cc33d15
logger: make replay_timeout configurable
2013-07-04 07:21:01 +02:00
Thomas Schoebel-Theuer
45cac16cc1
infra: add grace freeing to mapfree
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Avoid unnecessary LRUing of freeable buffers at the long term
(months) for better long-term performance.
2013-07-04 07:21:01 +02:00
Thomas Schoebel-Theuer
19f1a95a47
proc: allow some debugging even in production systems (default off)
2013-07-04 07:21:01 +02:00
Thomas Schoebel-Theuer
e33ddf63db
light: fix wrong condition in logfile update
2013-07-04 07:21:00 +02:00
Thomas Schoebel-Theuer
f3613177a2
aio: prefer fdatasync() over filemap_write_and_wait_range()
2013-07-04 07:21:00 +02:00
Thomas Schoebel-Theuer
be20dd422d
light: tolerate few incomplete log entries at the end when switching to primary
2013-07-04 07:21:00 +02:00
Thomas Schoebel-Theuer
bfb6070d25
logger: add replay_tolerance
2013-07-04 07:21:00 +02:00
Thomas Schoebel-Theuer
0ee23aa3ef
light: prevent remote symlink updates when delete is in progress
2013-07-04 07:21:00 +02:00
Thomas Schoebel-Theuer
269c53d565
marsadm: make 'wait-connect' an alias to 'wait-resource'
2013-07-04 07:21:00 +02:00
Thomas Schoebel-Theuer
228a464c8a
marsadm: mark "verify" as forbidden
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It would be dangerous since DRBD semantics are not implemented.
2013-07-04 07:21:00 +02:00
