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path: root/src/libstore/gc.cc
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2008-06-14* Note.Eelco Dolstra
2008-06-13* Garbage collector: don't do a complete topological sort of the NixEelco Dolstra
store under the reference relation, since that means that the garbage collector will need a long time to start deleting paths. Instead just delete the referrers of a path first.
2008-06-13* Print some progress info during the early GC stages.Eelco Dolstra
2008-06-09* Merged the no-bdb branch (-r10900:HEADEelco Dolstra
https://svn.nixos.org/repos/nix/nix/branches/no-bdb).
2007-11-29* nix-env -e: support uninstalling by path, so that one can sayEelco Dolstra
$ nix-env -e $(which firefox) or $ nix-env -e /nix/store/nywzlygrkfcgz7dfmhm5xixlx1l0m60v-pan-0.132 * nix-env -i: if an argument contains a slash anywhere, treat it as a path and follow it through symlinks into the Nix store. This allows things like $ nix-build -A firefox $ nix-env -i ./result * nix-env -q/-i/-e: don't complain when the `*' selector doesn't match anything. In particular, `nix-env -q \*' doesn't fail anymore on an empty profile.
2007-11-15* Don't need gc.hh.Eelco Dolstra
2007-11-15Added possibility to specify garbage collection levels for store paths; so ↵Michael Raskin
packages can share intermediate results of compilation and GC will collect it automatically while never touching tarballs, for example.
2007-08-28* PathLocks::lockPaths: don't allow reacquiring a lock we alreadyEelco Dolstra
hold.
2007-08-12* Get rid of the substitutes database table (NIX-47). Instead, if weEelco Dolstra
need any info on substitutable paths, we just call the substituters (such as download-using-manifests.pl) directly. This means that it's no longer necessary for nix-pull to register substitutes or for nix-channel to clear them, which makes those operations much faster (NIX-95). Also, we don't have to worry about keeping nix-pull manifests (in /nix/var/nix/manifests) and the database in sync with each other. The downside is that there is some overhead in calling an external program to get the substitutes info. For instance, "nix-env -qas" takes a bit longer. Abolishing the substitutes table also makes the logic in local-store.cc simpler, as we don't need to store info for invalid paths. On the downside, you cannot do things like "nix-store -qR" on a substitutable but invalid path (but nobody did that anyway). * Never catch interrupts (the Interrupted exception).
2007-06-12* Support queryDeriver() in multi-user installations.Eelco Dolstra
2007-06-11* Check against creation of GC roots in the store. Those roots don'tEelco Dolstra
work, because findRoots() stops when it encounters a symlink to the store. And of course the store is supposed to be read-only.
2007-03-19* Undocumented option `gc-check-reachability' to allow reachabilityEelco Dolstra
checking to be turned off on machines with way too many roots.
2007-02-21* `nix-store -qR' and friends: print the paths sorted topologicallyEelco Dolstra
under the references relation. This is useful for commands that want to copy paths to another Nix store in the right order.
2007-01-14* Make the garbage collector more resilient to certain consistencyEelco Dolstra
errors: in-use paths now cause a warning, not a fatal error.
2006-12-05* Better message.Eelco Dolstra
2006-12-05* Allow unprivileged users to run the garbage collector and to doEelco Dolstra
`nix-store --delete'. But unprivileged users are not allowed to ignore liveness. * `nix-store --delete --ignore-liveness': ignore the runtime roots as well.
2006-12-05* The determination of the root set should be made by the privilegedEelco Dolstra
process, so forward the operation. * Spam the user about GC misconfigurations (NIX-71). * findRoots: skip all roots that are unreadable - the warnings with which we spam the user should be enough.
2006-12-05* findRoots: return a map from the symlink (outside of the store) toEelco Dolstra
the store path (inside the store).
2006-12-05* In addPermRoot, check that the root that we just registered can beEelco Dolstra
found by the garbage collector. This addresses NIX-71 and is a particular concern in multi-user stores.
2006-12-04* Add indirect root registration to the protocol so that unprivilegedEelco Dolstra
processes can register indirect roots. Of course, there is still the problem that the garbage collector can only read the targets of the indirect roots when it's running as root...
2006-12-02* Move addTempRoot() to the store API, and add another functionEelco Dolstra
syncWithGC() to allow clients to register GC roots without needing write access to the global roots directory or the GC lock.
2006-12-02* Remove SwitchToOriginalUser, we're not going to need it anymore.Eelco Dolstra
2006-11-30* Refactoring. There is now an abstract interface class StoreAPIEelco Dolstra
containing functions that operate on the Nix store. One implementation is LocalStore, which operates on the Nix store directly. The next step, to enable secure multi-user Nix, is to create a different implementation RemoteStore that talks to a privileged daemon process that uses LocalStore to perform the actual operations.
2006-11-24* Doh! Path sizes need to be computed recursively of course.Eelco Dolstra
(NIX-70)
2006-09-14* Fix a huge gaping hole in nix-env w.r.t. the garbage collector.Eelco Dolstra
Nix-env failed to call addPermRoot(), which is necessary to safely add a new root. So if nix-env started after and finished before the garbage collector, the user environment (plus all other new stuff) it built might be garbage collected, leading to a dangling symlink chain in ~/.nix-profile... * Be more explicit if we block on the GC lock ("waiting for the big garbage collector lock..."). * Don't loop trying to create a new generation. It's not necessary anymore since profiles are locked nowadays.
2006-09-04* Use a proper namespace.Eelco Dolstra
* Optimise header file usage a bit. * Compile the parser as C++.
2006-08-11* `nix-store --gc --print-dead': print the total size of the storeEelco Dolstra
objects that would be freed.
2006-08-11* Don't assume that paths returned by the runtime root finder areEelco Dolstra
valid.
2006-07-20* Use $(libexecdir) to find find-runtime-roots.pl.Eelco Dolstra
2006-07-20* Use debug().Eelco Dolstra
2006-07-20* Call find-runtime-roots.pl from the garbage collector to preventEelco Dolstra
running applications etc. from being garbage collected.
2006-06-20* Concurrent GC on Cygwin.Eelco Dolstra
2006-05-29* Disable the concurrent garbage collector on Cygwin for now.Eelco Dolstra
2006-05-11* 64-bit compatibility fixes (for problems revealed by building on an AthlonEelco Dolstra
64 running 64-bit SUSE). A patched ATerm library is required to run Nix succesfully.
2006-03-06* `nix-env (-i|-u) --dry-run' now shows exactly which missing pathsEelco Dolstra
will be built or substituted.
2005-12-23* Added a flag `--ignore-liveness' to `nix-store --delete'. ItEelco Dolstra
deletes a path even if it is reachable from a root. However, it won't delete a path that still has referrers (since that would violate store invariants). Don't try this at home. It's a useful hack for recovering from certain situations in a somewhat clean way (e.g., holes in closures due to disk corruption).
2005-12-23* Revived the old "nix-store --delete" operation that deletes theEelco Dolstra
specified paths from the Nix store. However, this operation is safe: it refuses to delete anything that the garbage collector wouldn't delete.
2005-12-15* `nix-store --gc' prints out the number of bytes freed on stdoutEelco Dolstra
(even when it is interrupted by a signal).
2005-12-13* Change `referer' to `referrer' throughout. In particular, theEelco Dolstra
nix-store query options `--referer' and `--referer-closure' have been changed to `--referrer' and `--referrer-closure' (but the old ones are still accepted for compatibility).
2005-05-10* Ignore (with a warning) invalid garbage collector roots.Eelco Dolstra
2005-03-25* When finding live paths, the deriver need not be valid.Eelco Dolstra
2005-03-24* Create missing log and temproots directories automatically (reportedEelco Dolstra
by Rob).
2005-02-17* Switch to the calling user context for some more operations in aEelco Dolstra
setuid installation.
2005-02-14* Implement the `gc-keep-derivations' global configuretion flag.Eelco Dolstra
2005-02-14* Global configuration option `env-keep-derivations' to store pointerEelco Dolstra
to derivations in user environments. Nice for developers (since it prevents build-time-only dependencies from being GC'ed, in conjunction with `gc-keep-outputs'). Turned off by default.
2005-02-08* Updated `nix-store --verify' to the new schema.Eelco Dolstra
2005-02-07* `nix-store -qb' to query derivation environment bindings. UsefulEelco Dolstra
for finding build-time dependencies (possibly after a build). E.g., $ nix-store -qb aterm $(nix-store -qd $(which strc)) /nix/store/jw7c7s65n1gwhxpn35j9rgcci6ilzxym-aterm-2.3.1 * Arguments to nix-store can be files within store objects, e.g., /nix/store/jw7c...-aterm-2.3.1/bin/baffle. * Idem for garbage collector roots.
2005-02-01* A GC setting `gc-keep-outputs' to specify whether output paths ofEelco Dolstra
derivations should be kept.
2005-02-01* Move root finding from `nix-collect-garbage' to `nix-store --gc'.Eelco Dolstra
This was necessary becase root finding must be done after acquisition of the global GC lock. This makes `nix-collect-garbage' obsolete; it is now just a wrapper around `nix-store --gc'. * Automatically remove stale GC roots (i.e., indirect GC roots that point to non-existent paths).
2005-02-01* nix-build: use an indirection scheme to make it easier for users toEelco Dolstra
get rid of GC roots. Nix-build places a symlink `result' in the current directory. Previously, removing that symlink would not remove the store path being linked to as a GC root. Now, the GC root created by nix-build is actually a symlink in `/nix/var/nix/gcroots/auto' to `result'. So if that symlink is removed the GC root automatically becomes invalid (since it can no longer be resolved). The root itself is not automatically removed - the garbage collector should delete dangling roots.