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2023-12-22 r/7256 chore(tvix): move store/fs to castore/fsFlorian Klink8-2528/+0
With the recent introduction of the RootNodes trait, there's nothing in the fs module pulling in tvix-store dependencies, so it can live in tvix-castore. This allows other crates to make use of TvixStoreFS, without having to pull in tvix-store. For example, a tvix-build using a fuse mountpoint at /nix/store doesn't need a PathInfoService to hold the root nodes that should be present, but just a list. tvix-store now has a pathinfoservice/fs module, which contains the necessary glue logic to implement the RootNodes trait for a PathInfoService. To satisfy Rust orphan rules for trait implementations, we had to add a small wrapper struct. It's mostly hidden away by the make_fs helper function returning a TvixStoreFs. It can't be entirely private, as its still leaking into the concrete type of TvixStoreFS. tvix-store still has `fuse` and `virtiofs` features, but they now simply enable these features in the `tvix-castore` crate they depend on. The tests for the fuse functionality stay in tvix-store for now, as they populate the root nodes through a PathInfoService. Once above mentioned "list of root nodes" implementation exists, we might want to shuffle this around one more time. Fixes b/341. Change-Id: I989f664827a5a361b23b34368d242d10c157c756 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10378 Autosubmit: flokli <flokli@flokli.de> Tested-by: BuildkiteCI Reviewed-by: sterni <sternenseemann@systemli.org>
2023-12-16 r/7226 docs(tvix/store/fs): fix commentFlorian Klink1-5/+7
There's nothing store-path specific here anymore, it's just a name in the mountpoint root. Change-Id: I0f8004491baa03ba560d390053a42678ee81154a Reviewed-on: https://cl.tvl.fyi/c/depot/+/10377 Autosubmit: flokli <flokli@flokli.de> Tested-by: BuildkiteCI Reviewed-by: raitobezarius <tvl@lahfa.xyz>
2023-12-16 r/7223 refactor(tvix/store/fs): no explicitly required Arc'ed Blob/DirSvcFlorian Klink1-7/+12
Change-Id: Ie55026668cd4a6117e7b07174f5ac6638f93d194 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10374 Tested-by: BuildkiteCI Autosubmit: flokli <flokli@flokli.de> Reviewed-by: raitobezarius <tvl@lahfa.xyz>
2023-12-14 r/7222 refactor(tvix/store/fs): Decouple TvixStoreFs from Nix conceptsConnor Brewster2-76/+119
To support tvix builds, we need to be able to use the `TvixStoreFs` to materialize the sandbox's /nix/store filesystem with just the list of inputs needed for the build. Currently we'd need to seed an in-memory `PathInfoService`, which includes more functionality than what is required for `TvixStoreFs`. Additionally, the `PathInfoService` is specific to Nix. By decoupling `TvixStoreFs` and `PathInfoService`, we allow for usage of `TvixStoreFs` with `tvix-castore` without needing a `PathInfoService`. This introduces a new `RootNodes` trait which provides a way for the filesystem to look up CA nodes via their basename in the root directory of the filesystem. We then implement `RootNodes` for any `PathInfoService`. Additionally, the filesystem root inode tracker now stores basenames rather than `StorePath`s since `StorePath`s are specific to Nix. As a followup we can rename `TvixStoreFs` to `TvixCaStoreFs` and move it to the `castore` crate (or its own crate). b/341 Change-Id: I928372955017c23b1bf2b37190cbc508a4ed10d5 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10363 Tested-by: BuildkiteCI Reviewed-by: flokli <flokli@flokli.de>
2023-12-09 r/7138 refactor(store/fs): address clippyFlorian Klink1-1/+1
Change-Id: I28d60263ef672942940656caa8e0f9d20cc6b7d7 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10231 Autosubmit: flokli <flokli@flokli.de> Tested-by: BuildkiteCI Reviewed-by: tazjin <tazjin@tvl.su>
2023-11-28 r/7080 fix(tvix/store/fs): don't panic on PathInfoService errorFlorian Klink1-11/+9
An error in the PathInfoService request can appear in case the underlying request returns an error. We shouldn't panic and bork the fuse mount, but instead return an IO error. Change-Id: I2daeae629e1627d06adcd7b82ddb76c50c602212 Reviewed-on: https://cl.tvl.fyi/c/depot/+/10154 Tested-by: BuildkiteCI Reviewed-by: Connor Brewster <cbrewster@hey.com>
2023-11-18 r/7030 refactor(tvix/store/fs): simpllify readFlorian Klink1-19/+3
We can just use take(size) to restrict reading to that as a max. Change-Id: I0fbda74e4fb98ffeababae86a325233416029acf Reviewed-on: https://cl.tvl.fyi/c/depot/+/10072 Reviewed-by: raitobezarius <tvl@lahfa.xyz> Autosubmit: flokli <flokli@flokli.de> Tested-by: BuildkiteCI
2023-11-07 r/6978 refactor(tvix/store/fs): mv sparse -> populated directoriesFlorian Klink3-317/+54
Do this upgrade whenever someone is actually interested in the children of a directory, but that directory doesn't contain a more detailed listing. This is much more predictable, and removes a bunch of confusing code from the inode tracker itself. Change-Id: Ib3a13694d6d5d22887d2d04ae429592137f39cb4 Reviewed-on: https://cl.tvl.fyi/c/depot/+/9982 Autosubmit: flokli <flokli@flokli.de> Tested-by: BuildkiteCI Reviewed-by: Connor Brewster <cbrewster@hey.com>
2023-11-07 r/6977 refactor(tvix/store/fs): simplify name_in_root_to_ino_and_dataFlorian Klink1-82/+72
Have it return libc::ENOENT errors rather than an Option<…>. Also avoid having to traverse inode_data multiple times, by synthesizing the Arc<…> on our own in the insert case. In that case, the data is quite small, so cloning it is faster than traversing a second time. Change-Id: I7ab14bac8bb23859ed8d166a12070d4f4749b6d4 Reviewed-on: https://cl.tvl.fyi/c/depot/+/9981 Tested-by: BuildkiteCI Reviewed-by: Connor Brewster <cbrewster@hey.com>
2023-11-07 r/6976 refactor(tvix/store/fs): move code to get_directory_children helperFlorian Klink1-122/+76
As already established in the two previous CLs, these two pieces of code where doing the same. Move to a get_directory_children helper. Change-Id: Id6876f0c34f3f40a31a22d59a2cdbfef39e2d8de Reviewed-on: https://cl.tvl.fyi/c/depot/+/9980 Reviewed-by: Connor Brewster <cbrewster@hey.com> Tested-by: BuildkiteCI
2023-11-07 r/6975 refactor(tvix/store/fs): reduce write lock, return childrenFlorian Klink1-47/+56
Very similar to the previous CL Change-Id: I0df07ddca742b7b9485d48771c8d295dc3aa7136 Reviewed-on: https://cl.tvl.fyi/c/depot/+/9979 Tested-by: BuildkiteCI Reviewed-by: Connor Brewster <cbrewster@hey.com>
2023-11-07 r/6974 refactor(tvix/src/fs): reduce write lock, avoid inode_tracker lookupFlorian Klink1-39/+50
Code after this big match block only cares about parent_digest and children, so there's no need to do another inode_tracker.get in there. This also allows removing another if let block, right after, as we don't need to destructure parent_data anymore. Change-Id: I68fbbe3304194670caee5a453722369afa4e77ea Reviewed-on: https://cl.tvl.fyi/c/depot/+/9978 Tested-by: BuildkiteCI Reviewed-by: Connor Brewster <cbrewster@hey.com>
2023-11-07 r/6973 refactor(tvix/store/fs): move inode for store_path lookup to helperFlorian Klink1-19/+13
This makes it much harder to keep the read lock around for too long, and the code a bit easier to understand. Change-Id: I7d99c85cadd433cad444b8edd34e2c43d7eaf5a8 Reviewed-on: https://cl.tvl.fyi/c/depot/+/9977 Tested-by: BuildkiteCI Reviewed-by: Connor Brewster <cbrewster@hey.com>
2023-11-07 r/6972 fix(tvix/castore): B3Digest::{to_vec -> as_slice}edef1-4/+4
Not a single call site actually makes use of the Vec. Change-Id: I6cf31073c9f443d1702a21937a0c3938c2c643b8 Reviewed-on: https://cl.tvl.fyi/c/depot/+/9988 Tested-by: BuildkiteCI Reviewed-by: flokli <flokli@flokli.de>
2023-11-05 r/6958 chore(tvix): add missing clippy attributes & configVincent Ambo1-0/+1
For cases where clippy lints don't apply to us, or something is misfiring, add appropriate configuration. Relates to b/321. Change-Id: I0af453910b4a4112bf685b2a8e9a73de10ec87ea Reviewed-on: https://cl.tvl.fyi/c/depot/+/9965 Reviewed-by: flokli <flokli@flokli.de> Autosubmit: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2023-11-05 r/6955 chore(tvix): fix trivial clippy lintsVincent Ambo1-1/+1
Relates to b/321. Change-Id: I37284f89b186e469eb432e2bbedb37aa125a6ad4 Reviewed-on: https://cl.tvl.fyi/c/depot/+/9961 Tested-by: BuildkiteCI Reviewed-by: flokli <flokli@flokli.de> Autosubmit: tazjin <tazjin@tvl.su>
2023-11-05 r/6946 feat(tvix/castore): bump [Directory,File]Node size to u64Florian Klink3-8/+8
Having more than 4GiB files is quite possible (think about the NixOS graphical installer, and an uncompressed iso of it). No wire format changes. Change-Id: Ia78a07e4c554e91b93c5b9f8533266e4bd7f22b6 Reviewed-on: https://cl.tvl.fyi/c/depot/+/9950 Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
2023-10-27 r/6888 refactor(nix-compat/store_path): make digest and name privateedef1-3/+4
Change-Id: I62cbe883afcf3dd0c8d4de0e3b845069eb750c97 Reviewed-on: https://cl.tvl.fyi/c/depot/+/9855 Reviewed-by: flokli <flokli@flokli.de> Tested-by: BuildkiteCI
2023-10-16 r/6823 refactor(tvix/store/fs): clippyFlorian Klink2-7/+14
Change-Id: I11247e24475f0e49dc22f2d10bf3e1e276737899 Reviewed-on: https://cl.tvl.fyi/c/depot/+/9709 Reviewed-by: edef <edef@edef.eu> Tested-by: BuildkiteCI
2023-10-14 r/6803 refactor(tvix/store/fs): make fetch_directory_inode_data asyncFlorian Klink1-30/+32
To make this easier, move it outside of TvixStoreFs, and accept the DirectoryService as a function argument, so we don't need to worry about the lifetime of self. This also aligns with how we spawn async tasks inside the rest of TvixStoreFs. Change-Id: I3b95072209d32039f05aed122240f2d6db7ad172 Reviewed-on: https://cl.tvl.fyi/c/depot/+/9713 Reviewed-by: Connor Brewster <cbrewster@hey.com> Autosubmit: flokli <flokli@flokli.de> Tested-by: BuildkiteCI
2023-10-12 r/6793 refactor(tvix/store/fs): use while let statementFlorian Klink1-22/+16
Suggested by clippy. Change-Id: I686b1abcb40fab42017972a3f814fae29fa70c25 Reviewed-on: https://cl.tvl.fyi/c/depot/+/9712 Autosubmit: flokli <flokli@flokli.de> Reviewed-by: edef <edef@edef.eu> Tested-by: BuildkiteCI
2023-10-12 r/6788 fix(tvix/store/fs): fix typoedef1-3/+3
Change-Id: I132987dda1073dcc0b30e50e26682d6c8724d988 Reviewed-on: https://cl.tvl.fyi/c/depot/+/9689 Reviewed-by: flokli <flokli@flokli.de> Tested-by: BuildkiteCI
2023-10-02 r/6687 fix(tvix/store): Fix FUSE support on MacOSBrian Olsen3-11/+24
This partially fixes b/312 and gets FUSE to work again on MacOS. It is mostly small type changes and an update to fuse-backend-rs because upstream currently doesn't work with MacFuse. It also sets the default FUSE thread count on MacOS to 1 because otherwise the mount command will hang when shutting down as only one thread gets ENODEV and all the others just keep blocking. Change-Id: Ifb3c4268caf296c487049c1dc4618acb32497f44 Reviewed-on: https://cl.tvl.fyi/c/depot/+/9490 Tested-by: BuildkiteCI Reviewed-by: Connor Brewster <cbrewster@hey.com> Reviewed-by: flokli <flokli@flokli.de>
2023-09-24 r/6642 feat(tvix/store/fs): Add support for virtiofs backendConnor Brewster2-0/+240
This adds a virtiofs daemon implementation which hooks into the existing tvix-store filesystem implementation that is used for FUSE. This allows adding the filesystem to a microvm without having to set up FUSE inside the guest. Change-Id: If80c36c9657f2289853e8d9a364bf4f1f7b7559c Reviewed-on: https://cl.tvl.fyi/c/depot/+/9344 Autosubmit: Connor Brewster <cbrewster@hey.com> Tested-by: BuildkiteCI Reviewed-by: flokli <flokli@flokli.de>
2023-09-22 r/6629 refactor(tvix): move castore into tvix-castore crateFlorian Klink4-63/+68
This splits the pure content-addressed layers from tvix-store into a `castore` crate, and only leaves PathInfo related things, as well as the CLI entrypoint in the tvix-store crate. Notable changes: - `fixtures` and `utils` had to be moved out of the `test` cfg, so they can be imported from tvix-store. - Some ad-hoc fixtures in the test were moved to proper fixtures in the same step. - The protos are now created by a (more static) recipe in the protos/ directory. The (now two) golang targets are commented out, as it's not possible to update them properly in the same CL. This will be done by a followup CL once this is merged (and whitby deployed) Bug: https://b.tvl.fyi/issues/301 Change-Id: I8d675d4bf1fb697eb7d479747c1b1e3635718107 Reviewed-on: https://cl.tvl.fyi/c/depot/+/9370 Reviewed-by: tazjin <tazjin@tvl.su> Reviewed-by: flokli <flokli@flokli.de> Autosubmit: flokli <flokli@flokli.de> Tested-by: BuildkiteCI Reviewed-by: Connor Brewster <cbrewster@hey.com>
2023-09-21 r/6623 refactor(tvix/store): Asyncify PathInfoService and DirectoryServiceConnor Brewster2-96/+178
We've decided to asyncify all of the services to reduce some of the pains going back and for between sync<->async. The end goal will be for all the tvix-store internals to be async and then expose a sync interface for things like tvix eval io. Change-Id: I97c71f8db1d05a38bd8f625df5087d565705d52d Reviewed-on: https://cl.tvl.fyi/c/depot/+/9369 Autosubmit: Connor Brewster <cbrewster@hey.com> Tested-by: BuildkiteCI Reviewed-by: flokli <flokli@flokli.de>
2023-09-20 r/6622 refactor(tvix/store/fs): Separate FUSE and filesystem codeConnor Brewster6-0/+2456
In prepration for adding virtiofs support, I thought it would make sense to split out the filesystem implementation from FUSE itself. The `fs` module holds the tvix-store filesystem implemetation and the `fuse` module holds the code to spawn a FUSE daemon backed by multiple threads. Change-Id: I8c58447b8c3aa016a613068f8e7ec166554e237c Reviewed-on: https://cl.tvl.fyi/c/depot/+/9343 Reviewed-by: flokli <flokli@flokli.de> Tested-by: BuildkiteCI Autosubmit: Connor Brewster <cbrewster@hey.com>
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