Commit Graph

576 Commits

Author SHA1 Message Date
Simon Frei
79a758be3c
lib/model: Do Revert/Override synchronously (#6460) 2020-03-27 13:05:09 +01:00
Simon Frei
b7dffc051e
lib/model: Remove unused func (#6456) 2020-03-26 14:19:26 +01:00
Simon Frei
ddfa82e990
lib/model: Unset local flag on deleted files (fixes #6436) (#6449) 2020-03-24 12:51:17 +01:00
Simon Frei
d6b4873eed
gui, lib/model: Fix for folder stats with r-o and ignoreDel (fixes #6430) (#6431) 2020-03-22 11:46:42 +01:00
Simon Frei
cc2a55892f
lib: Repair sequence inconsistencies (#6367) 2020-03-18 17:34:46 +01:00
Jakob Borg
20aaa5927b
lib/protocol: Use BlocksHash to compare block lists when available (#6401)
This is an optimization for faster equal checks on block lists.
2020-03-10 14:46:49 +01:00
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
Simon Frei
f0e33d052a
lib: More contextification (#6343) 2020-02-24 21:57:15 +01:00
Simon Frei
fae7425bbf
lib: Modify FileInfos consistently (ref #6321) (#6349) 2020-02-19 16:58:09 +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
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
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
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
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
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
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
71882765f2 lib/events, lib/model: Unflake test and prevent deadlock on event unsubscribing (#6261) 2020-01-11 08:14:05 +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
Jakob Borg
be0508cf26
lib/model, lib/protocol: Use error handling to avoid panic on non-started folder (fixes #6174) (#6212)
This adds error returns to model methods called by the protocol layer.
Returning an error will cause the connection to be torn down as the
message couldn't be handled. Using this to signal that a folder isn't
currently available will then cause a reconnection a few moments later,
when it'll hopefully work better.

Tested manually by running with STRECHECKDBEVERY=0 on a nontrivially
sized setup. This panics reliably before this patch, but just causes a
disconnect/reconnect now.
2019-12-04 10:46:55 +01:00
Simon Frei
6fd5e78740 lib: Consistently unsubscribe from config-wrapper (fixes #6133) (#6205) 2019-12-04 07:15:00 +01:00
Marcus Legendre
b3fd9a8d53 lib/ignore: Don't create empty ".stignore" files (fixes #6190) (#6197)
This will:

1. prevent creation of a new .stignore if there are no ignore patterns
2. delete an existing .stignore if all ignore patterns are removed
2019-12-02 08:19:02 +01:00
Jakob Borg
e82a7e3dfa
all: Propagate errors from NamespacedKV (#6203)
As foretold by the prophecy, "once the database refactor is merged, then
shall appear a request to propagate errors from the store known
throughout the land as the NamedspacedKV, and it shall be good".
2019-11-30 13:03:24 +01:00
Jakob Borg
928767e316 lib/model: gofmt lol :( 2019-11-29 09:29:59 +01:00
Jakob Borg
c71116ee94
Implement database abstraction, error checking (ref #5907) (#6107)
This PR does two things, because one lead to the other:

- Move the leveldb specific stuff into a small "backend" package that
defines a backend interface and the leveldb implementation. This allows,
potentially, in the future, switching the db implementation so another
KV store should we wish to do so.

- Add proper error handling all along the way. The db and backend
packages are now errcheck clean. However, I drew the line at modifying
the FileSet API in order to keep this manageable and not continue
refactoring all of the rest of Syncthing. As such, the FileSet methods
still panic on database errors, except for the "database is closed"
error which is instead handled by silently returning as quickly as
possible, with the assumption that we're anyway "on the way out".
2019-11-29 09:11:52 +01:00
Simon Frei
606154b183 lib/model: Also send folder summary from sync-preparing (ref #6028) (#6202) 2019-11-29 08:30:17 +01:00
Jakob Borg
4e151d380c lib/versioner: Reduce surface area (#6186)
* lib/versioner: Reduce surface area

This is a refactor while I was anyway rooting around in the versioner.
Instead of exporting every possible implementation and the factory and
letting the caller do whatever, this now encapsulates all that and
exposes a New() that takes a config.VersioningConfiguration.

Given that and that we don't know (from the outside) how a versioner
works or what state it keeps, we now just construct it once per folder
and keep it around. Previously it was recreated for each restore
request.

* unparam

* wip
2019-11-26 07:39:31 +00:00
Simon Frei
4d368a37e2 lib/model, lib/protocol: Add contexts sending indexes and download-progress (#6176) 2019-11-25 11:07:36 +01:00
Simon Frei
cf312abc72 lib: Wrap errors with errors.Wrap instead of fmt.Errorf (#6181) 2019-11-23 15:20:54 +00:00
Simon Frei
65d4dd32cb
lib/model: Also handle ServeBackground (#6173) 2019-11-22 21:30:16 +01:00
Simon Frei
57d668ed1d
lib/config: Do introductions in a single config change (#6162) 2019-11-21 08:41:41 +01:00
Simon Frei
90d85fd0a2
lib: Replace done channel with contexts in and add names to util services (#6166) 2019-11-21 08:41:15 +01:00
Simon Frei
0d14ee4142
lib/model: Don't info log repeat pull errors (#6149) 2019-11-19 09:56:53 +01:00
Simon Frei
28edf2f5bb lib/model: Keep fmut locked while adding/starting/restarting folders (#6156) 2019-11-18 21:15:26 +01:00
Simon Frei
5edf4660e2
lib/model: Prevent cleanup-race in testing (ref #6152) (#6155) 2019-11-14 23:08:40 +01:00
Simon Frei
f80ce17497
lib/model: In tests prevent goroutine leaks and increase timeouts (#6152) 2019-11-13 10:21:54 +01:00
Simon Frei
ce72bee576 lib/model: Simplify pull error/retry logic (fixes #6139) (#6141) 2019-11-11 15:50:28 +01:00
Simon Frei
85e6a77f25 lib/model: Remove some testing deadlocks (#6138) 2019-11-08 18:53:51 +01:00
Jakob Borg
88244b0c1f lib/model: Add test for previous commit 2019-11-08 17:03:25 +01:00
Simon Frei
cd290d2d05 lib/model: Add initial deviceStatRefs on model creation (fixes #6136) (#6137)
This is a regression introduced in PR #6005 / commit
f7b2e79fdc
2019-11-08 11:32:51 +00:00
Simon Frei
bee7cce081
lib/model: Add folders on start in model (#6135) 2019-11-08 10:56:16 +01:00
Ruslan Yevdokymov
3b5dff3f34 lib/model: Fix removal of a marker when there are still folders referencing it (#6114) 2019-10-30 15:11:07 +00:00
Simon Frei
bbdda059bd lib/model: Check for symlinks before deleting during pull (fixes #6090) (#6100) 2019-10-22 21:55:51 +02:00