#require no-reposimplestore $ cat >> $HGRCPATH << EOF > [extensions] > share = > EOF store and revlogv1 are required in source $ hg --config format.usestore=false init no-store $ hg -R no-store debugupgraderepo abort: cannot upgrade repository; requirement missing: store [255] $ hg init no-revlogv1 $ cat > no-revlogv1/.hg/requires << EOF > dotencode > fncache > generaldelta > store > EOF $ hg -R no-revlogv1 debugupgraderepo abort: cannot upgrade repository; requirement missing: revlogv1 [255] Cannot upgrade shared repositories $ hg init share-parent $ hg -q share share-parent share-child $ hg -R share-child debugupgraderepo abort: cannot upgrade repository; unsupported source requirement: shared [255] Do not yet support upgrading treemanifest repos $ hg --config experimental.treemanifest=true init treemanifest $ hg -R treemanifest debugupgraderepo abort: cannot upgrade repository; unsupported source requirement: treemanifest [255] Cannot add treemanifest requirement during upgrade $ hg init disallowaddedreq $ hg -R disallowaddedreq --config experimental.treemanifest=true debugupgraderepo abort: cannot upgrade repository; do not support adding requirement: treemanifest [255] An upgrade of a repository created with recommended settings only suggests optimizations $ hg init empty $ cd empty $ hg debugformat format-variant repo fncache: yes dotencode: yes generaldelta: yes sparserevlog: yes plain-cl-delta: yes compression: zlib compression-level: default $ hg debugformat --verbose format-variant repo config default fncache: yes yes yes dotencode: yes yes yes generaldelta: yes yes yes sparserevlog: yes yes yes plain-cl-delta: yes yes yes compression: zlib zlib zlib compression-level: default default default $ hg debugformat --verbose --config format.usefncache=no format-variant repo config default fncache: yes no yes dotencode: yes no yes generaldelta: yes yes yes sparserevlog: yes yes yes plain-cl-delta: yes yes yes compression: zlib zlib zlib compression-level: default default default $ hg debugformat --verbose --config format.usefncache=no --color=debug format-variant repo config default [formatvariant.name.mismatchconfig|fncache: ][formatvariant.repo.mismatchconfig| yes][formatvariant.config.special| no][formatvariant.default| yes] [formatvariant.name.mismatchconfig|dotencode: ][formatvariant.repo.mismatchconfig| yes][formatvariant.config.special| no][formatvariant.default| yes] [formatvariant.name.uptodate|generaldelta: ][formatvariant.repo.uptodate| yes][formatvariant.config.default| yes][formatvariant.default| yes] [formatvariant.name.uptodate|sparserevlog: ][formatvariant.repo.uptodate| yes][formatvariant.config.default| yes][formatvariant.default| yes] [formatvariant.name.uptodate|plain-cl-delta: ][formatvariant.repo.uptodate| yes][formatvariant.config.default| yes][formatvariant.default| yes] [formatvariant.name.uptodate|compression: ][formatvariant.repo.uptodate| zlib][formatvariant.config.default| zlib][formatvariant.default| zlib] [formatvariant.name.uptodate|compression-level:][formatvariant.repo.uptodate| default][formatvariant.config.default| default][formatvariant.default| default] $ hg debugformat -Tjson [ { "config": true, "default": true, "name": "fncache", "repo": true }, { "config": true, "default": true, "name": "dotencode", "repo": true }, { "config": true, "default": true, "name": "generaldelta", "repo": true }, { "config": true, "default": true, "name": "sparserevlog", "repo": true }, { "config": true, "default": true, "name": "plain-cl-delta", "repo": true }, { "config": "zlib", "default": "zlib", "name": "compression", "repo": "zlib" }, { "config": "default", "default": "default", "name": "compression-level", "repo": "default" } ] $ hg debugupgraderepo (no feature deficiencies found in existing repository) performing an upgrade with "--run" will make the following changes: requirements preserved: dotencode, fncache, generaldelta, revlogv1, sparserevlog, store additional optimizations are available by specifying "--optimize ": re-delta-parent deltas within internal storage will be recalculated to choose an optimal base revision where this was not already done; the size of the repository may shrink and various operations may become faster; the first time this optimization is performed could slow down upgrade execution considerably; subsequent invocations should not run noticeably slower re-delta-multibase deltas within internal storage will be recalculated against multiple base revision and the smallest difference will be used; the size of the repository may shrink significantly when there are many merges; this optimization will slow down execution in proportion to the number of merges in the repository and the amount of files in the repository; this slow down should not be significant unless there are tens of thousands of files and thousands of merges re-delta-all deltas within internal storage will always be recalculated without reusing prior deltas; this will likely make execution run several times slower; this optimization is typically not needed re-delta-fulladd every revision will be re-added as if it was new content. It will go through the full storage mechanism giving extensions a chance to process it (eg. lfs). This is similar to "re-delta-all" but even slower since more logic is involved. --optimize can be used to add optimizations $ hg debugupgrade --optimize redeltaparent (no feature deficiencies found in existing repository) performing an upgrade with "--run" will make the following changes: requirements preserved: dotencode, fncache, generaldelta, revlogv1, sparserevlog, store re-delta-parent deltas within internal storage will choose a new base revision if needed additional optimizations are available by specifying "--optimize ": re-delta-multibase deltas within internal storage will be recalculated against multiple base revision and the smallest difference will be used; the size of the repository may shrink significantly when there are many merges; this optimization will slow down execution in proportion to the number of merges in the repository and the amount of files in the repository; this slow down should not be significant unless there are tens of thousands of files and thousands of merges re-delta-all deltas within internal storage will always be recalculated without reusing prior deltas; this will likely make execution run several times slower; this optimization is typically not needed re-delta-fulladd every revision will be re-added as if it was new content. It will go through the full storage mechanism giving extensions a chance to process it (eg. lfs). This is similar to "re-delta-all" but even slower since more logic is involved. modern form of the option $ hg debugupgrade --optimize re-delta-parent (no feature deficiencies found in existing repository) performing an upgrade with "--run" will make the following changes: requirements preserved: dotencode, fncache, generaldelta, revlogv1, sparserevlog, store re-delta-parent deltas within internal storage will choose a new base revision if needed additional optimizations are available by specifying "--optimize ": re-delta-multibase deltas within internal storage will be recalculated against multiple base revision and the smallest difference will be used; the size of the repository may shrink significantly when there are many merges; this optimization will slow down execution in proportion to the number of merges in the repository and the amount of files in the repository; this slow down should not be significant unless there are tens of thousands of files and thousands of merges re-delta-all deltas within internal storage will always be recalculated without reusing prior deltas; this will likely make execution run several times slower; this optimization is typically not needed re-delta-fulladd every revision will be re-added as if it was new content. It will go through the full storage mechanism giving extensions a chance to process it (eg. lfs). This is similar to "re-delta-all" but even slower since more logic is involved. unknown optimization: $ hg debugupgrade --optimize foobar abort: unknown optimization action requested: foobar (run without arguments to see valid optimizations) [255] Various sub-optimal detections work $ cat > .hg/requires << EOF > revlogv1 > store > EOF $ hg debugformat format-variant repo fncache: no dotencode: no generaldelta: no sparserevlog: no plain-cl-delta: yes compression: zlib compression-level: default $ hg debugformat --verbose format-variant repo config default fncache: no yes yes dotencode: no yes yes generaldelta: no yes yes sparserevlog: no yes yes plain-cl-delta: yes yes yes compression: zlib zlib zlib compression-level: default default default $ hg debugformat --verbose --config format.usegeneraldelta=no format-variant repo config default fncache: no yes yes dotencode: no yes yes generaldelta: no no yes sparserevlog: no no yes plain-cl-delta: yes yes yes compression: zlib zlib zlib compression-level: default default default $ hg debugformat --verbose --config format.usegeneraldelta=no --color=debug format-variant repo config default [formatvariant.name.mismatchconfig|fncache: ][formatvariant.repo.mismatchconfig| no][formatvariant.config.default| yes][formatvariant.default| yes] [formatvariant.name.mismatchconfig|dotencode: ][formatvariant.repo.mismatchconfig| no][formatvariant.config.default| yes][formatvariant.default| yes] [formatvariant.name.mismatchdefault|generaldelta: ][formatvariant.repo.mismatchdefault| no][formatvariant.config.special| no][formatvariant.default| yes] [formatvariant.name.mismatchdefault|sparserevlog: ][formatvariant.repo.mismatchdefault| no][formatvariant.config.special| no][formatvariant.default| yes] [formatvariant.name.uptodate|plain-cl-delta: ][formatvariant.repo.uptodate| yes][formatvariant.config.default| yes][formatvariant.default| yes] [formatvariant.name.uptodate|compression: ][formatvariant.repo.uptodate| zlib][formatvariant.config.default| zlib][formatvariant.default| zlib] [formatvariant.name.uptodate|compression-level:][formatvariant.repo.uptodate| default][formatvariant.config.default| default][formatvariant.default| default] $ hg debugupgraderepo repository lacks features recommended by current config options: fncache long and reserved filenames may not work correctly; repository performance is sub-optimal dotencode storage of filenames beginning with a period or space may not work correctly generaldelta deltas within internal storage are unable to choose optimal revisions; repository is larger and slower than it could be; interaction with other repositories may require extra network and CPU resources, making "hg push" and "hg pull" slower sparserevlog in order to limit disk reading and memory usage on older version, the span of a delta chain from its root to its end is limited, whatever the relevant data in this span. This can severly limit Mercurial ability to build good chain of delta resulting is much more storage space being taken and limit reusability of on disk delta during exchange. performing an upgrade with "--run" will make the following changes: requirements preserved: revlogv1, store added: dotencode, fncache, generaldelta, sparserevlog fncache repository will be more resilient to storing certain paths and performance of certain operations should be improved dotencode repository will be better able to store files beginning with a space or period generaldelta repository storage will be able to create optimal deltas; new repository data will be smaller and read times should decrease; interacting with other repositories using this storage model should require less network and CPU resources, making "hg push" and "hg pull" faster sparserevlog Revlog supports delta chain with more unused data between payload. These gaps will be skipped at read time. This allows for better delta chains, making a better compression and faster exchange with server. additional optimizations are available by specifying "--optimize ": re-delta-parent deltas within internal storage will be recalculated to choose an optimal base revision where this was not already done; the size of the repository may shrink and various operations may become faster; the first time this optimization is performed could slow down upgrade execution considerably; subsequent invocations should not run noticeably slower re-delta-multibase deltas within internal storage will be recalculated against multiple base revision and the smallest difference will be used; the size of the repository may shrink significantly when there are many merges; this optimization will slow down execution in proportion to the number of merges in the repository and the amount of files in the repository; this slow down should not be significant unless there are tens of thousands of files and thousands of merges re-delta-all deltas within internal storage will always be recalculated without reusing prior deltas; this will likely make execution run several times slower; this optimization is typically not needed re-delta-fulladd every revision will be re-added as if it was new content. It will go through the full storage mechanism giving extensions a chance to process it (eg. lfs). This is similar to "re-delta-all" but even slower since more logic is involved. $ hg --config format.dotencode=false debugupgraderepo repository lacks features recommended by current config options: fncache long and reserved filenames may not work correctly; repository performance is sub-optimal generaldelta deltas within internal storage are unable to choose optimal revisions; repository is larger and slower than it could be; interaction with other repositories may require extra network and CPU resources, making "hg push" and "hg pull" slower sparserevlog in order to limit disk reading and memory usage on older version, the span of a delta chain from its root to its end is limited, whatever the relevant data in this span. This can severly limit Mercurial ability to build good chain of delta resulting is much more storage space being taken and limit reusability of on disk delta during exchange. repository lacks features used by the default config options: dotencode storage of filenames beginning with a period or space may not work correctly performing an upgrade with "--run" will make the following changes: requirements preserved: revlogv1, store added: fncache, generaldelta, sparserevlog fncache repository will be more resilient to storing certain paths and performance of certain operations should be improved generaldelta repository storage will be able to create optimal deltas; new repository data will be smaller and read times should decrease; interacting with other repositories using this storage model should require less network and CPU resources, making "hg push" and "hg pull" faster sparserevlog Revlog supports delta chain with more unused data between payload. These gaps will be skipped at read time. This allows for better delta chains, making a better compression and faster exchange with server. additional optimizations are available by specifying "--optimize ": re-delta-parent deltas within internal storage will be recalculated to choose an optimal base revision where this was not already done; the size of the repository may shrink and various operations may become faster; the first time this optimization is performed could slow down upgrade execution considerably; subsequent invocations should not run noticeably slower re-delta-multibase deltas within internal storage will be recalculated against multiple base revision and the smallest difference will be used; the size of the repository may shrink significantly when there are many merges; this optimization will slow down execution in proportion to the number of merges in the repository and the amount of files in the repository; this slow down should not be significant unless there are tens of thousands of files and thousands of merges re-delta-all deltas within internal storage will always be recalculated without reusing prior deltas; this will likely make execution run several times slower; this optimization is typically not needed re-delta-fulladd every revision will be re-added as if it was new content. It will go through the full storage mechanism giving extensions a chance to process it (eg. lfs). This is similar to "re-delta-all" but even slower since more logic is involved. $ cd .. Upgrading a repository that is already modern essentially no-ops $ hg init modern $ hg -R modern debugupgraderepo --run upgrade will perform the following actions: requirements preserved: dotencode, fncache, generaldelta, revlogv1, sparserevlog, store beginning upgrade... repository locked and read-only creating temporary repository to stage migrated data: $TESTTMP/modern/.hg/upgrade.* (glob) (it is safe to interrupt this process any time before data migration completes) data fully migrated to temporary repository marking source repository as being upgraded; clients will be unable to read from repository starting in-place swap of repository data replaced files will be backed up at $TESTTMP/modern/.hg/upgradebackup.* (glob) replacing store... store replacement complete; repository was inconsistent for *s (glob) finalizing requirements file and making repository readable again removing temporary repository $TESTTMP/modern/.hg/upgrade.* (glob) copy of old repository backed up at $TESTTMP/modern/.hg/upgradebackup.* (glob) the old repository will not be deleted; remove it to free up disk space once the upgraded repository is verified Upgrading a repository to generaldelta works $ hg --config format.usegeneraldelta=false init upgradegd $ cd upgradegd $ touch f0 $ hg -q commit -A -m initial $ touch f1 $ hg -q commit -A -m 'add f1' $ hg -q up -r 0 $ touch f2 $ hg -q commit -A -m 'add f2' $ hg debugupgraderepo --run --config format.sparse-revlog=false upgrade will perform the following actions: requirements preserved: dotencode, fncache, revlogv1, store added: generaldelta generaldelta repository storage will be able to create optimal deltas; new repository data will be smaller and read times should decrease; interacting with other repositories using this storage model should require less network and CPU resources, making "hg push" and "hg pull" faster beginning upgrade... repository locked and read-only creating temporary repository to stage migrated data: $TESTTMP/upgradegd/.hg/upgrade.* (glob) (it is safe to interrupt this process any time before data migration completes) migrating 9 total revisions (3 in filelogs, 3 in manifests, 3 in changelog) migrating 917 bytes in store; 401 bytes tracked data migrating 3 filelogs containing 3 revisions (192 bytes in store; 0 bytes tracked data) finished migrating 3 filelog revisions across 3 filelogs; change in size: 0 bytes migrating 1 manifests containing 3 revisions (349 bytes in store; 220 bytes tracked data) finished migrating 3 manifest revisions across 1 manifests; change in size: 0 bytes migrating changelog containing 3 revisions (376 bytes in store; 181 bytes tracked data) finished migrating 3 changelog revisions; change in size: 0 bytes finished migrating 9 total revisions; total change in store size: 0 bytes copying phaseroots data fully migrated to temporary repository marking source repository as being upgraded; clients will be unable to read from repository starting in-place swap of repository data replaced files will be backed up at $TESTTMP/upgradegd/.hg/upgradebackup.* (glob) replacing store... store replacement complete; repository was inconsistent for *s (glob) finalizing requirements file and making repository readable again removing temporary repository $TESTTMP/upgradegd/.hg/upgrade.* (glob) copy of old repository backed up at $TESTTMP/upgradegd/.hg/upgradebackup.* (glob) the old repository will not be deleted; remove it to free up disk space once the upgraded repository is verified Original requirements backed up $ cat .hg/upgradebackup.*/requires dotencode fncache revlogv1 store generaldelta added to original requirements files $ cat .hg/requires dotencode fncache generaldelta revlogv1 store store directory has files we expect $ ls .hg/store 00changelog.i 00manifest.i data fncache phaseroots undo undo.backupfiles undo.phaseroots manifest should be generaldelta $ hg debugrevlog -m | grep flags flags : inline, generaldelta verify should be happy $ hg verify checking changesets checking manifests crosschecking files in changesets and manifests checking files checked 3 changesets with 3 changes to 3 files old store should be backed up $ ls -d .hg/upgradebackup.*/ .hg/upgradebackup.*/ (glob) $ ls .hg/upgradebackup.*/store 00changelog.i 00manifest.i data fncache phaseroots undo undo.backup.fncache undo.backupfiles undo.phaseroots unless --no-backup is passed $ rm -rf .hg/upgradebackup.*/ $ hg debugupgraderepo --run --no-backup upgrade will perform the following actions: requirements preserved: dotencode, fncache, generaldelta, revlogv1, store added: sparserevlog sparserevlog Revlog supports delta chain with more unused data between payload. These gaps will be skipped at read time. This allows for better delta chains, making a better compression and faster exchange with server. beginning upgrade... repository locked and read-only creating temporary repository to stage migrated data: $TESTTMP/upgradegd/.hg/upgrade.* (glob) (it is safe to interrupt this process any time before data migration completes) migrating 9 total revisions (3 in filelogs, 3 in manifests, 3 in changelog) migrating 917 bytes in store; 401 bytes tracked data migrating 3 filelogs containing 3 revisions (192 bytes in store; 0 bytes tracked data) finished migrating 3 filelog revisions across 3 filelogs; change in size: 0 bytes migrating 1 manifests containing 3 revisions (349 bytes in store; 220 bytes tracked data) finished migrating 3 manifest revisions across 1 manifests; change in size: 0 bytes migrating changelog containing 3 revisions (376 bytes in store; 181 bytes tracked data) finished migrating 3 changelog revisions; change in size: 0 bytes finished migrating 9 total revisions; total change in store size: 0 bytes copying phaseroots data fully migrated to temporary repository marking source repository as being upgraded; clients will be unable to read from repository starting in-place swap of repository data replaced files will be backed up at $TESTTMP/upgradegd/.hg/upgradebackup.* (glob) replacing store... store replacement complete; repository was inconsistent for * (glob) finalizing requirements file and making repository readable again removing old repository content$TESTTMP/upgradegd/.hg/upgradebackup.* (glob) removing temporary repository $TESTTMP/upgradegd/.hg/upgrade.* (glob) $ ls -1 .hg/ | grep upgradebackup [1] $ cd .. store files with special filenames aren't encoded during copy $ hg init store-filenames $ cd store-filenames $ touch foo $ hg -q commit -A -m initial $ touch .hg/store/.XX_special_filename $ hg debugupgraderepo --run upgrade will perform the following actions: requirements preserved: dotencode, fncache, generaldelta, revlogv1, sparserevlog, store beginning upgrade... repository locked and read-only creating temporary repository to stage migrated data: $TESTTMP/store-filenames/.hg/upgrade.* (glob) (it is safe to interrupt this process any time before data migration completes) migrating 3 total revisions (1 in filelogs, 1 in manifests, 1 in changelog) migrating 301 bytes in store; 107 bytes tracked data migrating 1 filelogs containing 1 revisions (64 bytes in store; 0 bytes tracked data) finished migrating 1 filelog revisions across 1 filelogs; change in size: 0 bytes migrating 1 manifests containing 1 revisions (110 bytes in store; 45 bytes tracked data) finished migrating 1 manifest revisions across 1 manifests; change in size: 0 bytes migrating changelog containing 1 revisions (127 bytes in store; 62 bytes tracked data) finished migrating 1 changelog revisions; change in size: 0 bytes finished migrating 3 total revisions; total change in store size: 0 bytes copying .XX_special_filename copying phaseroots data fully migrated to temporary repository marking source repository as being upgraded; clients will be unable to read from repository starting in-place swap of repository data replaced files will be backed up at $TESTTMP/store-filenames/.hg/upgradebackup.* (glob) replacing store... store replacement complete; repository was inconsistent for *s (glob) finalizing requirements file and making repository readable again removing temporary repository $TESTTMP/store-filenames/.hg/upgrade.* (glob) copy of old repository backed up at $TESTTMP/store-filenames/.hg/upgradebackup.* (glob) the old repository will not be deleted; remove it to free up disk space once the upgraded repository is verified $ hg debugupgraderepo --run --optimize redeltafulladd upgrade will perform the following actions: requirements preserved: dotencode, fncache, generaldelta, revlogv1, sparserevlog, store re-delta-fulladd each revision will be added as new content to the internal storage; this will likely drastically slow down execution time, but some extensions might need it beginning upgrade... repository locked and read-only creating temporary repository to stage migrated data: $TESTTMP/store-filenames/.hg/upgrade.* (glob) (it is safe to interrupt this process any time before data migration completes) migrating 3 total revisions (1 in filelogs, 1 in manifests, 1 in changelog) migrating 301 bytes in store; 107 bytes tracked data migrating 1 filelogs containing 1 revisions (64 bytes in store; 0 bytes tracked data) finished migrating 1 filelog revisions across 1 filelogs; change in size: 0 bytes migrating 1 manifests containing 1 revisions (110 bytes in store; 45 bytes tracked data) finished migrating 1 manifest revisions across 1 manifests; change in size: 0 bytes migrating changelog containing 1 revisions (127 bytes in store; 62 bytes tracked data) finished migrating 1 changelog revisions; change in size: 0 bytes finished migrating 3 total revisions; total change in store size: 0 bytes copying .XX_special_filename copying phaseroots data fully migrated to temporary repository marking source repository as being upgraded; clients will be unable to read from repository starting in-place swap of repository data replaced files will be backed up at $TESTTMP/store-filenames/.hg/upgradebackup.* (glob) replacing store... store replacement complete; repository was inconsistent for *s (glob) finalizing requirements file and making repository readable again removing temporary repository $TESTTMP/store-filenames/.hg/upgrade.* (glob) copy of old repository backed up at $TESTTMP/store-filenames/.hg/upgradebackup.* (glob) the old repository will not be deleted; remove it to free up disk space once the upgraded repository is verified fncache is valid after upgrade $ hg debugrebuildfncache fncache already up to date $ cd .. Check upgrading a large file repository --------------------------------------- $ hg init largefilesrepo $ cat << EOF >> largefilesrepo/.hg/hgrc > [extensions] > largefiles = > EOF $ cd largefilesrepo $ touch foo $ hg add --large foo $ hg -q commit -m initial $ cat .hg/requires dotencode fncache generaldelta largefiles revlogv1 sparserevlog store $ hg debugupgraderepo --run upgrade will perform the following actions: requirements preserved: dotencode, fncache, generaldelta, largefiles, revlogv1, sparserevlog, store beginning upgrade... repository locked and read-only creating temporary repository to stage migrated data: $TESTTMP/largefilesrepo/.hg/upgrade.* (glob) (it is safe to interrupt this process any time before data migration completes) migrating 3 total revisions (1 in filelogs, 1 in manifests, 1 in changelog) migrating 355 bytes in store; 160 bytes tracked data migrating 1 filelogs containing 1 revisions (106 bytes in store; 41 bytes tracked data) finished migrating 1 filelog revisions across 1 filelogs; change in size: 0 bytes migrating 1 manifests containing 1 revisions (116 bytes in store; 51 bytes tracked data) finished migrating 1 manifest revisions across 1 manifests; change in size: 0 bytes migrating changelog containing 1 revisions (133 bytes in store; 68 bytes tracked data) finished migrating 1 changelog revisions; change in size: 0 bytes finished migrating 3 total revisions; total change in store size: 0 bytes copying phaseroots data fully migrated to temporary repository marking source repository as being upgraded; clients will be unable to read from repository starting in-place swap of repository data replaced files will be backed up at $TESTTMP/largefilesrepo/.hg/upgradebackup.* (glob) replacing store... store replacement complete; repository was inconsistent for *s (glob) finalizing requirements file and making repository readable again removing temporary repository $TESTTMP/largefilesrepo/.hg/upgrade.* (glob) copy of old repository backed up at $TESTTMP/largefilesrepo/.hg/upgradebackup.* (glob) the old repository will not be deleted; remove it to free up disk space once the upgraded repository is verified $ cat .hg/requires dotencode fncache generaldelta largefiles revlogv1 sparserevlog store $ cat << EOF >> .hg/hgrc > [extensions] > lfs = > [lfs] > threshold = 10 > EOF $ echo '123456789012345' > lfs.bin $ hg ci -Am 'lfs.bin' adding lfs.bin $ grep lfs .hg/requires lfs $ find .hg/store/lfs -type f .hg/store/lfs/objects/d0/beab232adff5ba365880366ad30b1edb85c4c5372442b5d2fe27adc96d653f $ hg debugupgraderepo --run upgrade will perform the following actions: requirements preserved: dotencode, fncache, generaldelta, largefiles, lfs, revlogv1, sparserevlog, store beginning upgrade... repository locked and read-only creating temporary repository to stage migrated data: $TESTTMP/largefilesrepo/.hg/upgrade.* (glob) (it is safe to interrupt this process any time before data migration completes) migrating 6 total revisions (2 in filelogs, 2 in manifests, 2 in changelog) migrating 801 bytes in store; 467 bytes tracked data migrating 2 filelogs containing 2 revisions (296 bytes in store; 182 bytes tracked data) finished migrating 2 filelog revisions across 2 filelogs; change in size: 0 bytes migrating 1 manifests containing 2 revisions (241 bytes in store; 151 bytes tracked data) finished migrating 2 manifest revisions across 1 manifests; change in size: 0 bytes migrating changelog containing 2 revisions (264 bytes in store; 134 bytes tracked data) finished migrating 2 changelog revisions; change in size: 0 bytes finished migrating 6 total revisions; total change in store size: 0 bytes copying phaseroots copying lfs blob d0beab232adff5ba365880366ad30b1edb85c4c5372442b5d2fe27adc96d653f data fully migrated to temporary repository marking source repository as being upgraded; clients will be unable to read from repository starting in-place swap of repository data replaced files will be backed up at $TESTTMP/largefilesrepo/.hg/upgradebackup.* (glob) replacing store... store replacement complete; repository was inconsistent for *s (glob) finalizing requirements file and making repository readable again removing temporary repository $TESTTMP/largefilesrepo/.hg/upgrade.* (glob) copy of old repository backed up at $TESTTMP/largefilesrepo/.hg/upgradebackup.* (glob) the old repository will not be deleted; remove it to free up disk space once the upgraded repository is verified $ grep lfs .hg/requires lfs $ find .hg/store/lfs -type f .hg/store/lfs/objects/d0/beab232adff5ba365880366ad30b1edb85c4c5372442b5d2fe27adc96d653f $ hg verify checking changesets checking manifests crosschecking files in changesets and manifests checking files checked 2 changesets with 2 changes to 2 files $ hg debugdata lfs.bin 0 version https://git-lfs.github.com/spec/v1 oid sha256:d0beab232adff5ba365880366ad30b1edb85c4c5372442b5d2fe27adc96d653f size 16 x-is-binary 0 $ cd .. repository config is taken in account ------------------------------------- $ cat << EOF >> $HGRCPATH > [format] > maxchainlen = 1 > EOF $ hg init localconfig $ cd localconfig $ cat << EOF > file > some content > with some length > to make sure we get a delta > after changes > very long > very long > very long > very long > very long > very long > very long > very long > very long > very long > very long > EOF $ hg -q commit -A -m A $ echo "new line" >> file $ hg -q commit -m B $ echo "new line" >> file $ hg -q commit -m C $ cat << EOF >> .hg/hgrc > [format] > maxchainlen = 9001 > EOF $ hg config format format.maxchainlen=9001 $ hg debugdeltachain file rev chain# chainlen prev delta size rawsize chainsize ratio lindist extradist extraratio readsize largestblk rddensity srchunks 0 1 1 -1 base 77 182 77 0.42308 77 0 0.00000 77 77 1.00000 1 1 1 2 0 p1 21 191 98 0.51309 98 0 0.00000 98 98 1.00000 1 2 1 2 0 other 30 200 107 0.53500 128 21 0.19626 128 128 0.83594 1 $ hg debugupgraderepo --run --optimize redeltaall upgrade will perform the following actions: requirements preserved: dotencode, fncache, generaldelta, revlogv1, sparserevlog, store re-delta-all deltas within internal storage will be fully recomputed; this will likely drastically slow down execution time beginning upgrade... repository locked and read-only creating temporary repository to stage migrated data: $TESTTMP/localconfig/.hg/upgrade.* (glob) (it is safe to interrupt this process any time before data migration completes) migrating 9 total revisions (3 in filelogs, 3 in manifests, 3 in changelog) migrating 1019 bytes in store; 882 bytes tracked data migrating 1 filelogs containing 3 revisions (320 bytes in store; 573 bytes tracked data) finished migrating 3 filelog revisions across 1 filelogs; change in size: -9 bytes migrating 1 manifests containing 3 revisions (333 bytes in store; 138 bytes tracked data) finished migrating 3 manifest revisions across 1 manifests; change in size: 0 bytes migrating changelog containing 3 revisions (366 bytes in store; 171 bytes tracked data) finished migrating 3 changelog revisions; change in size: 0 bytes finished migrating 9 total revisions; total change in store size: -9 bytes copying phaseroots data fully migrated to temporary repository marking source repository as being upgraded; clients will be unable to read from repository starting in-place swap of repository data replaced files will be backed up at $TESTTMP/localconfig/.hg/upgradebackup.* (glob) replacing store... store replacement complete; repository was inconsistent for *s (glob) finalizing requirements file and making repository readable again removing temporary repository $TESTTMP/localconfig/.hg/upgrade.* (glob) copy of old repository backed up at $TESTTMP/localconfig/.hg/upgradebackup.* (glob) the old repository will not be deleted; remove it to free up disk space once the upgraded repository is verified $ hg debugdeltachain file rev chain# chainlen prev delta size rawsize chainsize ratio lindist extradist extraratio readsize largestblk rddensity srchunks 0 1 1 -1 base 77 182 77 0.42308 77 0 0.00000 77 77 1.00000 1 1 1 2 0 p1 21 191 98 0.51309 98 0 0.00000 98 98 1.00000 1 2 1 3 1 p1 21 200 119 0.59500 119 0 0.00000 119 119 1.00000 1 $ cd .. $ cat << EOF >> $HGRCPATH > [format] > maxchainlen = 9001 > EOF Check upgrading a sparse-revlog repository --------------------------------------- $ hg init sparserevlogrepo --config format.sparse-revlog=no $ cd sparserevlogrepo $ touch foo $ hg add foo $ hg -q commit -m "foo" $ cat .hg/requires dotencode fncache generaldelta revlogv1 store Check that we can add the sparse-revlog format requirement $ hg --config format.sparse-revlog=yes debugupgraderepo --run >/dev/null copy of old repository backed up at $TESTTMP/sparserevlogrepo/.hg/upgradebackup.* (glob) the old repository will not be deleted; remove it to free up disk space once the upgraded repository is verified $ cat .hg/requires dotencode fncache generaldelta revlogv1 sparserevlog store Check that we can remove the sparse-revlog format requirement $ hg --config format.sparse-revlog=no debugupgraderepo --run >/dev/null copy of old repository backed up at $TESTTMP/sparserevlogrepo/.hg/upgradebackup.* (glob) the old repository will not be deleted; remove it to free up disk space once the upgraded repository is verified $ cat .hg/requires dotencode fncache generaldelta revlogv1 store #if zstd Check upgrading to a zstd revlog -------------------------------- upgrade $ hg --config format.revlog-compression=zstd debugupgraderepo --run --no-backup >/dev/null $ hg debugformat -v format-variant repo config default fncache: yes yes yes dotencode: yes yes yes generaldelta: yes yes yes sparserevlog: yes yes yes plain-cl-delta: yes yes yes compression: zstd zlib zlib compression-level: default default default $ cat .hg/requires dotencode fncache generaldelta revlog-compression-zstd revlogv1 sparserevlog store downgrade $ hg debugupgraderepo --run --no-backup > /dev/null $ hg debugformat -v format-variant repo config default fncache: yes yes yes dotencode: yes yes yes generaldelta: yes yes yes sparserevlog: yes yes yes plain-cl-delta: yes yes yes compression: zlib zlib zlib compression-level: default default default $ cat .hg/requires dotencode fncache generaldelta revlogv1 sparserevlog store upgrade from hgrc $ cat >> .hg/hgrc << EOF > [format] > revlog-compression=zstd > EOF $ hg debugupgraderepo --run --no-backup > /dev/null $ hg debugformat -v format-variant repo config default fncache: yes yes yes dotencode: yes yes yes generaldelta: yes yes yes sparserevlog: yes yes yes plain-cl-delta: yes yes yes compression: zstd zstd zlib compression-level: default default default $ cat .hg/requires dotencode fncache generaldelta revlog-compression-zstd revlogv1 sparserevlog store $ cd .. #endif