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annex.diskreserve default increased from 1 mb to 100 mb

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It's hard to know what's a good default for this. But 1 mb seems way too
small, because it's very easy for a git pull or some similar operation
that we don't think of as using much space to use up 1 mb of space.

Most people would want to free up some space if a filesystem only had 100
mb free. But on a small VPS, it's probably not uncommon to have only 1 gb
free. So 1 gb is too large for annex.diskreserve.

While old 1 gb USB keys are around, it's unlikely that anyone is
relying on them to shuttle annex data around; it would be worth anyone's
time to upgrade to a 32 gb or larger cheap modern USB key ($5).

Sponsored-by: Kevin Mueller on Patreon
This commit is contained in:
Joey Hess 2022-09-21 15:00:13 -04:00
parent 94216c99a7
commit 34e313f786
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4 changed files with 8 additions and 6 deletions
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1
CHANGELOG
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@ -1,5 +1,6 @@
git-annex (10.20220823) UNRELEASED; urgency=medium
* annex.diskreserve default increased from 1 mb to 100 mb.
* Include the assistant and webapp when building with cabal 3.4.1.0.
* Merged the webapp build flag into the assistant build flag.
* Optimise linker in linux standalone tarballs.

2
Types/GitConfig.hs
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@ -153,7 +153,7 @@ extractGitConfig configsource r = GitConfig
, annexUUID = hereuuid
, annexNumCopies = configuredNumCopies
<$> getmayberead (annexConfig "numcopies")
, annexDiskReserve = fromMaybe onemegabyte $
, annexDiskReserve = fromMaybe (onemegabyte * 100) $
readSize dataUnits =<< getmaybe (annexConfig "diskreserve")
, annexDirect = getbool (annexConfig "direct") False
, annexBackend = maybe

10
doc/git-annex.mdwn
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@ -822,12 +822,12 @@ repository, using [[git-annex-config]]. See its man page for a list.)
* `annex.diskreserve`
Amount of disk space to reserve. Disk space is checked when transferring
content to avoid running out, and additional free space can be reserved
via this option, to make space for more important content (such as git
commit logs). Can be specified with any commonly used units, for example,
"0.5 gb", "500M", or "100 KiloBytes"
annexed content to avoid running out, and additional free space can be
reserved via this option, to make space for other data (such as git
commit logs). Can be specified with any commonly used units, for
example, "0.5 gb", "500M", or "100 KiloBytes"
The default reserve is 1 megabyte.
The default reserve is 100 megabytes.
* `annex.skipunknown`

1
doc/todo/prevent_pulling_unlocked_files_using_all_disk_space_by_default.mdwn
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@ -9,6 +9,7 @@ be eaten up by other non-object uses of disk.
Perhaps 1 mb is too small for the default for annex.diskreserve. Even
10 or 100 mb would leave a lot more margin for other minor uses of disk space.
(Update: increased default to 100 mb)
Perhaps there could be another config like annex.diskreserve but that
applies only to populating unlocked files. It could default to some larger