--single-transaction to restore each database schema. This yields
performance improvements for databases with many tables. Also, remove
split_old_dump() as it is no longer needed.
existence via open(), rather than collecting a directory listing and
looking up matching relfilenode files with sequential scans of the
array. This speeds up pg_upgrade by 2x for a large number of tables,
e.g. 16k.
Per observation by Ants Aasma.
Since the scandir() emulation was taken out of pg_upgrade, there's
no longer any need for scandir_file_pattern to exist as a global
variable. Replace it with a local in the one remaining function
that was making use of it.
add ability to control permissions of created files
have psql echo its queries for easier debugging
output four separate log files, and delete them on success
add -r/--retain option to keep log files after success
make logs file append-only
remove -g/-G/-l logging options
sugggest tailing appropriate log file on failure
enhance -v/--verbose behavior
Add __attribute__ decorations for printf format checking to the places that
were missing them. Fix the resulting warnings. Add
-Wmissing-format-attribute to the standard set of warnings for GCC, so these
don't happen again.
The warning fixes here are relatively harmless. The one serious problem
discovered by this was already committed earlier in
cf15fb5cab.
Add errno-based output to error messages where appropriate, reformat
blocks to about 72 characters per line, use spaces instead of tabs for
indentation, and other style adjustments.
If someone removes the 'postgres' database from the old cluster and the
new cluster has a 'postgres' database, the number of databases will not
match. We actually could upgrade such a setup, but it would violate the
1-to-1 mapping of database counts, so we throw an error instead.
Previously they got an error during the upgrade, and not at the check
stage; PG 9.0.4 does the same.
up relations, but rather order old/new relations and use the same array
index value for both. This should speed up pg_upgrade for databases
with many relations.
pointers, which simplifies the code. This was not possible in 9.0 because
everything was in a single nested struct, but is possible now.
Per suggestion from Tom.
cmp parameter for pg_scandir(). The code failed to support this anyway
for Sun/Windows, so pretending we could accept a parameter other than
NULL was just asking for trouble.
