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krh@65
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Towards replacing rpm + yum (0.1):
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krh@65
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2 |
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krh@82
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3 |
- installer part:
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krh@65
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krh@82
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5 |
- pre install check; check that dirs can be created (no files where
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krh@82
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want to create dirs), move config files according to file
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krh@82
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flags. (.rpmnew etc)
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krh@65
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krh@82
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9 |
- run hooks; probably fork to shell and in the parent just do a
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krh@82
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write() of the hook section to a pipe to the shell.
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krh@82
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krh@82
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- store rpm headers for installed packages.
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krh@65
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13 |
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krh@65
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14 |
- versions in depsolving
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krh@65
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15 |
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krh@65
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16 |
- signed packages
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krh@65
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17 |
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krh@65
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- merge file lists when merging package sets
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krh@65
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19 |
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krh@65
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20 |
- download (libcurl?)
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krh@65
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21 |
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krh@65
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- figure out how to canonically represent empty string... ~0?
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krh@65
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23 |
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krh@70
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24 |
- space calculation before transaction, but ideally, do a number of
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krh@70
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smaller transactions.
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krh@70
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krh@70
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- pre-link changing binaries and libs on disk screwing up checksum?
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krh@70
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krh@74
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29 |
- nail down byte-order and word sizes of repo file.
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krh@74
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30 |
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krh@74
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- version the sections in the file, put the element size in the header
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krh@74
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so we can add stuff to elements in a backwards compatible way.
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krh@82
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maybe not necessary, we can just add sections that augment the
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krh@82
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sections we want to add to (similar to how rpm has add versioned
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krh@82
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deps).
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krh@82
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krh@82
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- pipelined download and install; topo-sort packages in update set,
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krh@82
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pick one with all deps in the current set, add it to the current set
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krh@82
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and satisfy deps against update set => result: minimal update
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krh@82
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transaction. Queue download and install/update transaction for the
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krh@82
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packages in the minimal set, start over. This also makes the
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krh@82
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installation phase much more interruptible, basically just stop
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krh@82
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after a sub-transaction finishes. As we keep the update set around
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krh@82
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as a target, we can restart if needed. Probably don't need to, can
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krh@82
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just do a new update. During a sub-transaction we should keep the
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krh@82
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target set (i.e. the current set to be) around as a lock file
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krh@82
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(system.repo.lock or so, see git) so that razor updates are
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krh@82
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prevented if the systems crashes during an update.
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krh@74
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krh@65
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Misc ideas:
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krh@65
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krh@1
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- keep history of installed packages/journal of package transaction,
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krh@1
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so we can roll back to yesterday, or see what got installed in the
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krh@1
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latest yum update.
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krh@1
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krh@8
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- transactions, proper recovery, make sure we don't poop our package
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krh@8
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database (no more rm /var/lib/rpm/__cache*).
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krh@8
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krh@18
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- rewrite qsort and bsearch that doesn't require global context var
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krh@18
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and can output a map describing the permutaion.
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krh@18
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krh@18
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- use hash table for package and property lists so we only store
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krh@18
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unique lists (like for string pool).
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krh@40
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krh@40
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- use existing, running system as repo; eg
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krh@40
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krh@40
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razor update razor://other-box.local evince
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krh@40
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krh@40
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to pull eg the latest evince and dependencies from another box. We
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krh@40
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should be able to regenerate a rzr pkg from the system so we can
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krh@40
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reuse the signature from the originating repo.
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krh@41
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krh@41
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- Ok, maybe the fastest package set merge method in the end is to use
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krh@41
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the razor_importer, but use a hash table for the properties. This
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krh@41
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way we can assign them unique IDs immediately (like tokenizing
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krh@41
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strings).
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krh@47
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krh@47
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- test suite should be easy, just keep .repo files around and test
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krh@47
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different type of upgrades that way (obsoletes, conflicts, file
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krh@47
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conflicts, file/dir problems etc). Or maybe just keep a simple file
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krh@47
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format ad use a custom importer to create the .repo files.
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krh@47
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krh@56
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- try to clean up the
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krh@56
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krh@56
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do { ... } while (((e++)->name & RAZOR_ENTRY_LAST) == 0);
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krh@56
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krh@56
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idiom for iteration of directories.
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krh@63
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krh@63
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- overlay package sets? mount a read-only /usr over nfs or from the
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krh@63
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virt-host and have a local package set overlaid over the read-only
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krh@63
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one. shouldn't need new features in the core package set data
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krh@63
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structure, but should be just conventions on top. we have the base
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krh@63
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package set from the r/o system, the overlay set from the local
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krh@63
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system and we can have an effective package set which is the merge
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krh@63
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of everything from the overlay into the base set. the effective set
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krh@63
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is easy to compute and we could do it on the fly or cache it. or
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krh@63
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maybe the effective set is the on-disk representation and the
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krh@63
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overlay can be computed when needed, we just keep a link back to the
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krh@63
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base.
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krh@71
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krh@71
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- incremental rawhide repo updates? instead of downloading 10MB zipped
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krh@82
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repo every time, download a diff repo? Should be pretty small,
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krh@82
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especially if we don't have file checksums in metadata. Filenames
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krh@82
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and properties are for the most part already present, typically just
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krh@82
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a version bump plus maybe tweaking a couple requires. The upstream
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krh@82
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repo can store multiple incremental updates in one big file and
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krh@82
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provide an index file that maps updates for a given date (we should
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krh@82
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use repo-file checksums though) to a range in the file: Download the
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krh@82
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index file, search for a match for your latest rawhide.repo file,
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krh@82
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download range of updates that brings it up to date.
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krh@74
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111 |
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krh@74
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- use hash tables for dirs when importing files to avoid qsorting all
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krh@74
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files in rawhide.
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krh@75
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114 |
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krh@82
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Bugs:
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krh@82
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116 |
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krh@82
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- eliminate duplicate entries in package property lists.
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krh@82
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118 |
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krh@75
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- corner cases such as no files/properties in repo etc segfault.
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