Commit graph

374 commits

Author SHA1 Message Date
Eelco Dolstra f32fef1b07 * GC option `--max-atime' that specifies an upper limit to the last
accessed time of paths that may be deleted.  Anything more recently
  used won't be deleted.  The time is specified in time_t,
  e.g. seconds since 1970-01-01 00:00:00 UTC; use `date +%s' to
  convert to time_t from the command line. 

  Example: to delete everything that hasn't been used in the last two
  months:

  $ nix-store --gc -v --max-atime $(date +%s -d "2 months ago")
2008-09-17 14:52:35 +00:00
Eelco Dolstra 4af2fdba6d * Typo. 2008-09-17 13:00:55 +00:00
Eelco Dolstra c987061aa4 * Some refactoring. Better output with `-v' for --use-atime. 2008-09-17 12:54:07 +00:00
Eelco Dolstra 7ab68961e4 * Garbage collector: added an option `--use-atime' to delete paths in
order of ascending last access time.  This is useful in conjunction
  with --max-freed or --max-links to prefer deleting non-recently used
  garbage, which is good (especially in the build farm) since garbage
  may become live again.

  The code could easily be modified to accept other criteria for
  ordering garbage by changing the comparison operator used by the
  priority queue in collectGarbage().
2008-09-17 10:02:55 +00:00
Eelco Dolstra 7718b19389 * Explicitly set PWD to prevent problems with chroot builds. In
particular, dietlibc cannot figure out the cwd because the inode of
  the current directory doesn't appear in .. (because getdents returns
  the inode of the mount point).
2008-08-27 17:20:25 +00:00
Eelco Dolstra 9cc0da8453 * Create a /tmp with 1777 permission in the chroot. Some builders
need a writable /tmp (they don't respect $TMPDIR).
2008-08-27 16:03:03 +00:00
Eelco Dolstra d06be428f6 * Disable chroot builds for fixed-output derivations so that we don't
need /etc in the chroot (in particular, /etc/resolv.conf for
  fetchurl).  Not having /etc/resolv.conf in the chroot is a good
  thing, since we don't want normal derivations to download files.
2008-08-25 15:49:22 +00:00
Eelco Dolstra b428adc267 * Strip off the `.nix' suffix from the attribute name for files in
~/.nix-defexpr,  otherwise the attribute cannot be selected with the
  `-A' option.  Useful if you want to stick a Nix expression directly
  in ~/.nix-defexpr.
2008-08-25 13:31:57 +00:00
Eelco Dolstra db4f4a8425 * Backward compatibility check to prevent nixos-rebuild from barfing
when upgrading Nix.
2008-08-14 13:02:19 +00:00
Eelco Dolstra c03b729319 * Increase the sleep periods a bit to make the test less likely to
fail on slow machines.  Of course it would be better if this test
  wasn't timing dependent...
2008-08-14 09:26:30 +00:00
Eelco Dolstra 98b07466fb * Better error checking of the data from the substituters. 2008-08-05 10:57:53 +00:00
Eelco Dolstra 5adbb0aabe * build.cc: only use a substituter if it returns info for a path. 2008-08-04 13:15:35 +00:00
Eelco Dolstra c4f98941ed * nix-env --dry-run: show the total size of the substituter
downloads.
2008-08-04 12:29:04 +00:00
Eelco Dolstra 03427e76f1 * querySubstitutablePathInfo: work properly when run via the daemon.
* --dry-run: print the paths that we don't know how to build/substitute.
2008-08-04 11:44:50 +00:00
Eelco Dolstra 3c92ea399d * Make nix-env --dry-run print the paths to be substituted correctly
again.  (After the previous substituter mechanism refactoring I
  didn't update the code that obtains the references of substitutable
  paths.)  This required some refactoring: the substituter programs
  are now kept running and receive/respond to info requests via
  stdin/stdout.
2008-08-02 12:54:35 +00:00
Eelco Dolstra 989176c56e * Allow read-only access to the store (e.g., non-root users on NixOS
can do operations like "nix-store -qR <path>" even without the Nix
  daemon).
2008-07-18 15:34:46 +00:00
Eelco Dolstra 6c8641a542 2008-06-18 19:17:05 +00:00
Eelco Dolstra d3aa183beb * Garbage collector: option `--max-freed' to stop after at least N
bytes have been freed, `--max-links' to stop when the Nix store
  directory has fewer than N hard links (the latter being important
  for very large Nix stores on filesystems with a 32000 subdirectories
  limit).
2008-06-18 14:20:16 +00:00
Eelco Dolstra a8f3b02092 * `nix-store --optimise': handle files with >= 32000 hard links.
(There can easily be more than 32000 occurrences of the empty file.)
2008-06-18 14:13:00 +00:00
Eelco Dolstra a72709afd8 * Some refactoring: put the GC options / results in separate structs.
* The garbage collector now also prints the number of blocks freed.
2008-06-18 09:34:17 +00:00
Eelco Dolstra 94fd46fa1c * Note. 2008-06-14 16:02:31 +00:00
Eelco Dolstra 826b271d9a * Garbage collector: don't do a complete topological sort of the Nix
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 18:25:24 +00:00
Eelco Dolstra 30c9f909b2 * Print some progress info during the early GC stages. 2008-06-13 17:21:20 +00:00
Eelco Dolstra b0e92f6d47 * Merged the no-bdb branch (-r10900:HEAD
https://svn.nixos.org/repos/nix/nix/branches/no-bdb).
2008-06-09 13:52:45 +00:00
Eelco Dolstra bd955e15e1 * GCC 4.3.0 (Fedora 9) compatibility fixes. Reported by Gour and
Armijn Hemel.
2008-05-21 11:17:31 +00:00
Eelco Dolstra 72034ab35d * sockaddr_un doesn't allow path names of more than 108 characters.
This isn't usually a problem, except that it causes tests to fail
  when performed in a directory with a very long path name.  So chdir
  to the socket directory and use a relative path name.
2008-04-09 05:57:01 +00:00
Eelco Dolstra 329025253d * Use /tmp/nix-build-<drvpath>-<counter> instead of
/tmp/nix-<pid>-<counter> for temporary build directories.  This
  increases purity a bit: many packages store the temporary build path
  in their output, causing (generally unimportant) binary differences.
2008-03-27 13:45:17 +00:00
Eelco Dolstra f789ea1d09 * A transaction is unnecessary since the path cannot be
garbage-collected (it's a temporary root).
2008-03-01 21:05:33 +00:00
Eelco Dolstra 66c51dc215 * nix-store --dump-db / --load-db to dump/load the Nix DB.
* nix-store --register-validity: option to supply the content hash of
  each path.
* Removed compatibility with Nix <= 0.7 stores.
2008-01-29 18:17:36 +00:00
Michael Raskin 5eb5c23447 Fixed exportBuildReferenceGraph 2008-01-15 04:32:08 +00:00
Michael Raskin 2196cb67c5 Added a way to include derivation with its outputs and dependencies - exportBuildReferenceGraph 2007-12-30 09:30:56 +00:00
Eelco Dolstra 633518628f * nix-env -e: support uninstalling by path, so that one can say
$ 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.
2007-11-29 16:18:24 +00:00
Eelco Dolstra c370755583 * Flag `--no-build-hook' to disable distributed builds.
* queryDeriver in daemon mode: don't barf if the other side returns an
  empty string (which means there is no deriver).
2007-11-16 16:15:26 +00:00
Eelco Dolstra 149e273023 * Don't need gc.hh. 2007-11-15 15:07:27 +00:00
Michael Raskin 6fc60e2060 Added possibility to specify garbage collection levels for store paths; so packages can share intermediate results of compilation and GC will collect it automatically while never touching tarballs, for example. 2007-11-15 03:47:12 +00:00
Eelco Dolstra 42d80d1170 * On FreeBSD, sys/mount.h needs sys/param.h. 2007-10-29 10:03:07 +00:00
Eelco Dolstra d91cd30563 * Detect whether chroot / bind-mount support is available. 2007-10-27 16:51:55 +00:00
Eelco Dolstra dc6f373842 * Delete the chroot directory automatically.
* Removed some debug messages.
2007-10-27 16:06:38 +00:00
Eelco Dolstra 9397cd30c8 * Support for doing builds in a chroot under Linux. The builder is
executed in a chroot that contains just the Nix store, the temporary
  build directory, and a configurable set of additional directories
  (/dev and /proc by default).  This allows a bit more purity
  enforcement: hidden build-time dependencies on directories such as
  /usr or /nix/var/nix/profiles are no longer possible.  As an added
  benefit, accidental network downloads (cf. NIXPKGS-52) are prevented
  as well (because files such as /etc/resolv.conf are not available in
  the chroot).

  However the usefulness of chroots is diminished by the fact that
  many builders depend on /bin/sh, so you need /bin in the list of
  additional directories.  (And then on non-NixOS you need /lib as
  well...)
2007-10-27 00:46:59 +00:00
Eelco Dolstra d04291cfab * Doh! Don't change the permissions on /nix/store. 2007-10-10 13:52:38 +00:00
Eelco Dolstra 315183f194 * nix-store --optimise: flag "--dry-run" to just query what the disk
savings would be.
2007-10-10 13:43:04 +00:00
Eelco Dolstra a8629de827 * New command `nix-store --optimise' to reduce Nix store disk space
usage by finding identical files in the store and hard-linking them
  to each other.  It typically reduces the size of the store by
  something like 25-35%.  This is what the optimise-store.pl script
  did, but the new command is faster and more correct (it's safe wrt
  garbage collection and concurrent builds).
2007-10-09 22:14:27 +00:00
Eelco Dolstra f3441e6122 * Pass various options to the worker so that flags like -K or -j work
in multi-user Nix (NIX-72).
* Client/worker: exchange a protocol version number for future
  compatibility.
2007-09-18 09:11:20 +00:00
Eelco Dolstra 0d65fc08e2 * Create the Nix daemon socket in a separate directory
(/nix/var/nix/daemon-socket).  This allows access to the Nix daemon
  to be restricted by setting the mode/ownership on that directory as
  desired, e.g.

    $ chmod 770 /nix/var/nix/daemon-socket
    $ chown root.wheel /nix/var/nix/daemon-socket

  to allow only users in the wheel group to use Nix.

  Setting the ownership on a socket is much trickier, since the socket
  must be deleted and recreated every time the daemon is started
  (which would require additional Nix configuration file directives to
  specify the mode/ownership, and wouldn't support arbitrary ACLs),
  some BSD variants appear to ignore permissions on sockets, and it's
  not clear whether the umask is respected on every platform when
  creating sockets.
2007-08-30 09:50:44 +00:00
Eelco Dolstra cb1c1004cd * When there are multiple substituters, make sure to release the
lock on the output path after trying each.  Otherwise the
  pathIsLockedByMe() test gets confused.
2007-08-28 16:22:08 +00:00
Eelco Dolstra c970b28ba0 * Fix a race condition with parallel builds where multiple
fixed-output derivations or substitutions try to build the same
  store path at the same time.  Locking generally catches this, but
  not between multiple goals in the same process.  This happened
  especially often (actually, only) in the build farm with fetchurl
  downloads of the same file being executed on multiple machines and
  then copied back to the main machine where they would clobber each
  other (NIXBF-13).

  Solution: if a goal notices that the output path is already locked,
  then go to sleep until another goal finishes (hopefully the one
  locking the path) and try again.
2007-08-28 11:36:17 +00:00
Eelco Dolstra e0d7e47862 * PathLocks::lockPaths: don't allow reacquiring a lock we already
hold.
2007-08-28 09:39:03 +00:00
Eelco Dolstra 3757ee589f * Bump the Nix database schema version number; delete the substitutes
table.
2007-08-13 11:37:39 +00:00
Eelco Dolstra 59afc1a15c * Backwards compatibility. 2007-08-13 11:15:13 +00:00
Eelco Dolstra 9e975458b4 * Get rid of the substitutes database table (NIX-47). Instead, if we
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).
2007-08-12 00:29:28 +00:00