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* Upgraded to Berkeley DB 4.2.52. The main advantage of 4.2 is that

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it automatically removes log files when they are no longer needed.

  *** IMPORTANT ***

  If you have an existing Nix installation, you must checkpoint the
  Nix database to prevent recent transactions from being undone.  Do
  the following:

  - optional: make a backup of $prefix/var/nix/db.

  - run `db_checkpoint' from Berkeley DB 4.1:
  
    $ db_checkpoint -h $prefix/var/nix/db -1

  - optional (?): run `db_recover' from Berkeley DB 4.1:

    $ db_recover -h $prefix/var/nix/db

  - remove $prefix/var/nix/db/log* and $prefix/var/nix/db/__db*
This commit is contained in:
Eelco Dolstra 2004-01-07 15:53:14 +00:00
parent abe8c8c2aa
commit 7959354379
2 changed files with 7 additions and 6 deletions
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11
externals/Makefile.am vendored
View file

@ -1,11 +1,11 @@
# Berkeley DB
DB = db-4.1.25
DB = db-4.2.52
$(DB).tar.gz:
@echo "Nix requires Berkeley DB to build."
@echo "Please download version 4.1.25 from"
@echo " http://www.sleepycat.com/update/snapshot/db-4.1.25.tar.gz"
@echo "Please download version 4.2.52 from"
@echo " http://www.sleepycat.com/update/snapshot/db-4.2.52.tar.gz"
@echo "and place it in the externals/ directory."
false
@ -20,8 +20,9 @@ build-db: have-db
(pfx=`pwd` && \
cd $(DB)/build_unix && \
CC="$(CC)" CXX="$(CXX)" CFLAGS="$(CFLAGS)" CXXFLAGS="$(CXXFLAGS)" \
../dist/configure --prefix=$$pfx/inst \
--enable-cxx --disable-shared && \
../dist/configure --prefix=$$pfx/inst \
--enable-cxx --disable-shared --disable-cryptography \
--disable-replication --disable-verify && \
make && \
make install)
touch build-db

2
src/libstore/db.cc
View file

@ -160,7 +160,7 @@ void Database::open(const string & path)
env->set_lg_bsize(32 * 1024); /* default */
env->set_lg_max(256 * 1024); /* must be > 4 * lg_bsize */
env->set_lk_detect(DB_LOCK_DEFAULT);
env->set_flags(DB_TXN_WRITE_NOSYNC, 1);
env->set_flags(DB_TXN_WRITE_NOSYNC | DB_LOG_AUTOREMOVE, 1);
/* The following code provides automatic recovery of the