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1385 Commits

Author SHA1 Message Date
Jakob Borg
dd92b2b8f4
all: Tweak error creation (#6391) 
- In the few places where we wrap errors, use the new Go 1.13 "%w"
  construction instead of %s or %v.

- Where we create errors with constant strings, consistently use
  errors.New and not fmt.Errorf.

- Remove capitalization from errors in the few places where we had that.
 2020-03-03 22:40:00 +01:00
Jakob Borg
c08e253e7c
lib/db: Prevent GC concurrently with migration (fixes #6389) (#6390) 2020-02-29 19:51:32 +01:00
Jakob Borg
5de6f6d349
lib/db: Correct metadata recalculation (fixes #6381) (#6382) 
If we decide to recalculate the metadata we shouldn't start from
whatever we loaded from the database, as that data is wrong. We should
start from a clean slate.
 2020-02-28 11:16:33 +01:00
Jakob Borg
883497966e lib/db: Remove reference to env var that never existed 2020-02-27 11:21:35 +01:00
Jakob Borg
4f7a77597e
lib/db: Slightly improve indirection (ref #6372) (#6373) 
I was working on indirecting version vectors, and that resulted in some
refactoring and improving the existing block indirection stuff. We may
or may not end up doing the version vector indirection, but I think
these changes are reasonable anyhow and will simplify the diff
significantly if we do go there. The main points are:

- A bunch of renaming to make the indirection and GC not about "blocks"
  but about "indirection".

- Adding a cutoff so that we don't actually indirect for small block
  lists. This gets us better performance when handling small files as it
  cuts out the indirection for quite small loss in space efficiency.

- Being paranoid and always recalculating the hash on put. This costs
  some CPU, but the consequences if a buggy or malicious implementation
  silently substituted the block list by lying about the hash would be bad.
 2020-02-27 11:19:21 +01:00
Jakob Borg
4e4b9a872a
lib/dialer: Preserve nilness in error handling (fixes #6368) (#6369) 
Also the call site where it shouldn't anyway be looking at the conn when
the err is non-nil.
 2020-02-26 13:16:18 +01:00
Audrius Butkevicius
71aecc5cd4
lib/dialer: Bring back address faking connection (fixes #6289) (#6363) 2020-02-26 12:37:23 +01:00
Simon Frei
680b0b14db
lib/connections: Refactor status for testing (ref #6361) (#6362) 2020-02-25 21:18:31 +01:00
Jakob Borg
55238e3b5b
lib/connections: Actually record connection errors (#6361) 2020-02-25 16:56:24 +01:00
Simon Frei
f0e33d052a
lib: More contextification (#6343) 2020-02-24 21:57:15 +01:00
Jakob Borg
10cb14fcb8 lib/db: Allow put partial FileInfo without blocks (ref #6353) 2020-02-22 17:44:34 +01:00
Simon Frei
32e12abb43
lib/db: Don't panic on incorrect BlocksHash (fixes #6353) (#6355) 2020-02-22 16:51:23 +01:00
Simon Frei
6489feb1d7
lib/db: Schema update to repair sequence index (ref #6304) (#6350) 2020-02-22 09:36:59 +01:00
Simon Frei
fae7425bbf
lib: Modify FileInfos consistently (ref #6321) (#6349) 2020-02-19 16:58:09 +01:00
Tyler Kropp
4026625c2d
lib/config, gui: Set unix socket permissions for GUI listen address (fixes #5979) (#6310) 2020-02-18 08:52:12 +01:00
Jakob Borg
bb375b1aff
lib/model: Stop summary sender faster (ref #6319) (#6341) 
One of the causes of "panic: database is closed" is that we try to send
summaries after it's been closed. Calculating summaries can take a long
time and if we have a lot of folders it's not unreasonable to think
that we might be stopped in this loop, so prepare to bail here.

* push
 2020-02-14 08:11:54 +01:00
Simon Frei
05e23f1991
lib/db: Don't call backend.Commit twice (ref #6337) (#6342) 2020-02-14 08:11:24 +01:00
Jakob Borg
71de6fe290
lib/upnp: Exit quicker (#6339) 
During NAT discovery we block for 10s (NatTimeoutS) before returning.
This is mostly noticeable when Ctrl-C:ing a Syncthing directly after
startup as we wait for those ten seconds before shutting down. This
makes it check the context a little bit more frequently.
 2020-02-13 15:39:36 +01:00
Jakob Borg
6a840a040b
lib/db: Keep metadata better in sync (ref #6335) (#6337) 
This adds metadata updates to the same write batch as the underlying
file change. The odds of a metadata update going missing is greatly
reduced.

Bonus change: actually commit the transaction in recalcMeta.
 2020-02-13 15:23:08 +01:00
Simon Frei
c3637f2191
lib: Faster termination on exit (ref #6319) (#6329) 2020-02-13 14:43:00 +01:00
Simon Frei
ca90f4e6af
lib/db: Use flags from arg not LocalFlags() updating meta (#6333) 2020-02-13 14:02:30 +01:00
Jakob Borg
51fa36d61f
lib/db: Recover sequence number and metadata on startup (fixes #6335) (#6336) 
lib/db: Recover sequence number and metadata on startup (fixes #6335)

If we crashed after writing new file entries but before updating
metadata in the database the sequence number and metadata will be wrong.
This fixes that.
 2020-02-13 13:05:26 +01:00
Jakob Borg
d95a087829
lib/db: Don't leak snapshot when closing (#6331) 
We could potentially get a snapshot and then fail to get a releaser,
leaking the snapshot. This takes the releaser first and makes sure to
release it on snapshot error.
 2020-02-12 12:00:17 +01:00
Jakob Borg
a728743c86
lib/db: Use Commit() instead of commit() (#6330) 
The readWriteTransaction offered both commit() (the one to use) and
Commit() (via embedding) where the latter didn't close the read
transaction. This removes the lower cased variant in order to prevent
the mistake.

The only place where the mistake was made was the new gc runner, where
it would leave a read snapshot open forever.
 2020-02-12 11:59:55 +01:00
Simon Frei
ce27780a4c
lib/model: Return empty summary on paused folders (ref #6272) (#6326) 2020-02-12 11:59:12 +01:00
Jakob Borg
0df39ddc72
lib/fs, lib/model: Rewrite RecvOnly tests (#6318) 
During some other work I discovered these tests weren't great, so I've
rewritten them to be a little better. The real changes here are:

- Don't play games with not starting the folder and such, and don't
  construct a fake folder instance -- just use the one the model has. The
  folder starts and scans but the folder contents are empty at this point
  so that's fine.

- Use a fakefs instead of a temp dir.

- To support the above, implement a fakefs option `?content=true` to
  make the fakefs actually retain written content. Use sparingly,
  obviously, but it means the fakefs can usually be used instead of an
  on disk real directory.
 2020-02-12 07:47:05 +01:00
Simon Frei
a596e5e2f0
lib/model: Consistent error return values for folder methods on model (#6325) 2020-02-12 07:35:24 +01:00
Jakob Borg
04e648fee6
lib/db: Handle missing block lists as missing file (ref #6321) (#6322) 
Also explicitly handle non-nil but empty block lists (if they should
ever pop up as an effect of unmarshalling changes or whatnot).
 2020-02-11 15:37:22 +01:00
Simon Frei
29736b1e33
lib/db: Add closeWaitGroup to allow async operation (#6317) 2020-02-11 14:31:43 +01:00
Jakob Borg
b61da487e4 all: Update metadata modtime on delete (ref #6284) (#6315) 
This records the time a file was marked as deleted. It will, in the
future, aid in garbage collecting old files.
 2020-02-10 10:48:30 +01:00
Jakob Borg
5823e7a5ce lib/model: Sort and group model initialization better (ref #6303) 2020-02-01 08:12:25 +01:00
Jakob Borg
55937b61ca
lib/model: Add global request limiter (fixes #6302) (#6303) 
This adds a new config with the simple and concise name
maxConcurrentIncomingRequestKiB. This limits how many bytes we have "in
the air" in the form of response data being read and processed.

After some testing I think that not having this limiter is seldom a
great idea and thus I propose a default value of 256 MiB for this new
setting.

I also refactored the folder IO limiter to be a model/folder attribute
instead of a package global.
 2020-02-01 08:02:18 +01:00
Jakob Borg
e0d4cdc9a3
lib/ignore: Don't crash on empty patterns (fixes #6300) (#6301) 
Instead of panicking when we try to look closer at the empty pattern,
return something like `invalid pattern "(?d)" in ignore file: missing
pattern`.
 2020-01-30 09:58:44 +01:00
Jakob Borg
d91c4b010b
lib/config, lib/model: Limit concurrent pulls (fixes #5914) (#6290) 
Adds a new folder state "Waiting to Sync" in the same vein as the
existing "Waiting to Scan". This vastly improves performances in the
rare cases when there are lots and lots of folders operating.
 2020-01-27 17:31:17 +01:00
Jakob Borg
84920bff63 lib/db: Fixup last commit with better key name 2020-01-26 15:22:21 +01:00
Jakob Borg
bf4c8439e8
lib/db: Configurable block GC time (#6295) 
Also retain the interval over restarts by storing last GC time in the
database. This to make sure that GC eventually happens even if the
interval is configured to a long time (say, a month).
 2020-01-26 15:13:28 +01:00
Jakob Borg
8fc2dfad0c
lib/db: Deduplicate block lists in database (fixes #5898) (#6283) 
* lib/db: Deduplicate block lists in database (fixes #5898)

This moves the block list in the database out from being just a field on
the FileInfo to being an object of its own. When putting a FileInfo we
marshal the block list separately and store it keyed by the sha256 of
the marshalled block list. When getting, if we are not doing a
"truncated" get, we do an extra read and unmarshal for the block list.

Old block lists are cleared out by a periodic GC sweep. The alternative
would be to use refcounting, but:

- There is a larger risk of getting that wrong and either dropping a
  block list in error or keeping them around forever.

- It's tricky with our current database, as we don't have dirty reads.
  This means that if we update two FileInfos with identical block lists in
  the same transaction we can't just do read/modify/write for the ref
  counters as we wouldn't see our own first update. See above about
  tracking this and risks about getting it wrong.

GC uses a bloom filter for keys to avoid heavy RAM usage. GC can't run
concurrently with FileInfo updates so there is a new lock around those
operation at the lowlevel.

The end result is a much more compact database, especially for setups
with many peers where files get duplicated many times.

This is per-key-class stats for a large database I'm currently working
with, under the current schema:

```
 0x00:  9138161 items, 870876 KB keys + 7397482 KB data, 95 B +  809 B avg, 1637651 B max
 0x01:   185656 items,  10388 KB keys + 1790909 KB data, 55 B + 9646 B avg,  924525 B max
 0x02:   916890 items,  84795 KB keys +    3667 KB data, 92 B +    4 B avg,     192 B max
 0x03:      384 items,     27 KB keys +       5 KB data, 72 B +   15 B avg,      87 B max
 0x04:     1109 items,     17 KB keys +      17 KB data, 15 B +   15 B avg,      69 B max
 0x06:      383 items,      3 KB keys +       0 KB data,  9 B +    2 B avg,      18 B max
 0x07:      510 items,      4 KB keys +      12 KB data,  9 B +   24 B avg,      41 B max
 0x08:     1349 items,     12 KB keys +      10 KB data,  9 B +    8 B avg,      17 B max
 0x09:      194 items,      0 KB keys +     123 KB data,  5 B +  634 B avg,   11484 B max
 0x0a:        3 items,      0 KB keys +       0 KB data, 14 B +    7 B avg,      30 B max
 0x0b:   181836 items,   2363 KB keys +   10694 KB data, 13 B +   58 B avg,     173 B max
 Total 10426475 items, 968490 KB keys + 9202925 KB data.
```

Note 7.4 GB of data in class 00, total size 9.2 GB. After running the
migration we get this instead:

```
 0x00:  9138161 items, 870876 KB keys + 2611392 KB data, 95 B +  285 B avg,    4788 B max
 0x01:   185656 items,  10388 KB keys + 1790909 KB data, 55 B + 9646 B avg,  924525 B max
 0x02:   916890 items,  84795 KB keys +    3667 KB data, 92 B +    4 B avg,     192 B max
 0x03:      384 items,     27 KB keys +       5 KB data, 72 B +   15 B avg,      87 B max
 0x04:     1109 items,     17 KB keys +      17 KB data, 15 B +   15 B avg,      69 B max
 0x06:      383 items,      3 KB keys +       0 KB data,  9 B +    2 B avg,      18 B max
 0x07:      510 items,      4 KB keys +      12 KB data,  9 B +   24 B avg,      41 B max
 0x09:      194 items,      0 KB keys +     123 KB data,  5 B +  634 B avg,   11484 B max
 0x0a:        3 items,      0 KB keys +       0 KB data, 14 B +   17 B avg,      51 B max
 0x0b:   181836 items,   2363 KB keys +   10694 KB data, 13 B +   58 B avg,     173 B max
 0x0d:    44282 items,   1461 KB keys +   61081 KB data, 33 B + 1379 B avg, 1637399 B max
 Total 10469408 items, 969939 KB keys + 4477905 KB data.
```

Class 00 is now down to 2.6 GB, with just 61 MB added in class 0d.

There will be some additional reads in some cases which theoretically
hurts performance, but this will be more than compensated for by smaller
writes and better compaction.

On my own home setup which just has three devices and a handful of
folders the difference is smaller in absolute numbers of course, but
still less than half the old size:

```
 0x00:  297122 items,  20894 KB keys + 306860 KB data, 70 B + 1032 B avg, 103237 B max
 0x01:  115299 items,   7738 KB keys +  17542 KB data, 67 B +  152 B avg,    419 B max
 0x02: 1430537 items, 121223 KB keys +   5722 KB data, 84 B +    4 B avg,    253 B max
 ...
 Total 1947412 items, 151268 KB keys + 337485 KB data.
```

to:

```
 0x00:  297122 items,  20894 KB keys +  37038 KB data, 70 B +  124 B avg,    520 B max
 0x01:  115299 items,   7738 KB keys +  17542 KB data, 67 B +  152 B avg,    419 B max
 0x02: 1430537 items, 121223 KB keys +   5722 KB data, 84 B +    4 B avg,    253 B max
 ...
 0x0d:   18041 items,    595 KB keys +  71964 KB data, 33 B + 3988 B avg, 101109 B max
 Total 1965447 items, 151863 KB keys + 139628 KB data.
```

* wip

* wip

* wip

* wip
 2020-01-24 08:35:44 +01:00
Audrius Butkevicius
17b441c993
lib/relays: Fix incorrect timeout, bring back logging (ref #6289) (#6291) 
* lib/relays: Fix incorrect timeout, bring back logging (ref #6289)

* Fix format strings
 2020-01-23 21:37:35 +00:00
Simon Frei
08f0e125ef all: Transactionalize db.FileSet (fixes #5952) (#6239) 2020-01-21 18:23:08 +01:00
Jakob Borg
d62a0cf692
lib/model: Handle progress emitter zero interval (fixes #6281) (#6282) 
Makes the logic a bit clearer and safer. This also sneakily redefines
the 0 interval to also mean disabled, whereas it previously meant ...
sometimes default to 1s, sometimes just spin.
 2020-01-20 21:14:29 +01:00
Simon Frei
879d757850 lib/syncthing: Wait for actual termination on Stop() (#6277) 2020-01-20 08:40:15 +01:00
Jakob Borg
6c8e8f0391
lib/model: Remove legacy handling of symlinks (#6276) 
This hardly seams relevant any more; 0.14.14 is dead since a long time.
 2020-01-19 12:02:20 +01:00
Simon Frei
39891cdf42 lib/model: Return paused summary instead of error on paused folders (#6272) 2020-01-17 09:30:00 +01:00
Simon Frei
e782bab9fc lib/config: Add some info to the folder marker missing (ref #5207) (#6270) 2020-01-16 15:30:29 +01:00
Simon Frei
08bb730ad0 lib/db: Wrap errors from leveldb iterators (fixes #6263) (#6264) 2020-01-12 09:06:31 +04:00
Simon Frei
71882765f2 lib/events, lib/model: Unflake test and prevent deadlock on event unsubscribing (#6261) 2020-01-11 08:14:05 +01:00
Simon Frei
119d76d035
lib/stun: Refactor to remove unnecessary logging (fixes #6213) (#6260) 2020-01-10 10:24:15 +01:00
Simon Frei
08753ccabe
lib/model: Reset queue after all pulling is done (fixes #5867) (#6256) 2020-01-08 12:21:22 +01:00
Simon Frei
f56a5545d4 gui, lib/model: Prevent negative sync completion (fixes #4570) (#6248) 2020-01-03 14:07:57 +01:00
Simon Frei
7a8e73d599 build, pmp: Replace fork with upstream for go-nat-pmp and tidy go.mod (#6247) 2020-01-03 12:39:59 +01:00