Apparently readahead was disabled by default. Enable readahead with the
Linux default size of 128kB. Larger values seem to have no effect.
This can speed up reading from the fuse mount by at least factor 5.
Speedup for a 1G random file stored in a local repository:
(Only one result shown, but times were quite stable, restarted restic
after each command)
$ dd if=/dev/urandom bs=1M count=1024 of=rand
$ shasum -a 256 tmp/rand
75dd9b374e712577d64672a05b8ceee40dfc45dce6321082d2c2fd51d60c6c2d tmp/rand
before: $ time shasum -a 256 fuse/snapshots/latest/tmp/rand
75dd9b374e712577d64672a05b8ceee40dfc45dce6321082d2c2fd51d60c6c2d fuse/snapshots/latest/tmp/rand
real 0m18.294s
user 0m4.522s
sys 0m3.305s
before: $ time cat fuse/snapshots/latest/tmp/rand > /dev/null
real 0m14.924s
user 0m0.000s
sys 0m4.625s
after: $ time shasum -a 256 fuse/snapshots/latest/tmp/rand
75dd9b374e712577d64672a05b8ceee40dfc45dce6321082d2c2fd51d60c6c2d fuse/snapshots/latest/tmp/rand
real 0m6.106s
user 0m3.115s
sys 0m0.182s
after: $ time cat fuse/snapshots/latest/tmp/rand > /dev/null
real 0m3.096s
user 0m0.017s
sys 0m0.241s
Do not lock the repository if --no-lock global flag is set. This allows
to mount repositories which are archived on a read only system.
Signed-off-by: Sébastien Gross <seb•ɑƬ•chezwam•ɖɵʈ•org>
This command can only be built on Darwin, FreeBSD and Linux
(and if we upgrade bazil.org/fuse, only FreeBSD and Linux:
https://github.com/bazil/fuse/issues/224).
Listing the few supported operating systems explicitly here makes
porting restic to new platforms easier.
The `dump`, `find`, `forget`, `ls`, `mount`, `restore`, `snapshots`,
`stats` and `tag` commands will now take into account multiple
`--host` and `-H` flags.
This commit changes the logic slightly: checking the permissions in the
fuse mount when nobody else besides the current user can access the fuse
mount does not sense. The current user has access to the repo files in
addition to the password, so they can access all data regardless of what
the fuse mount does.
Enabling `--allow-root` allows the root user to access the files in the
fuse mount, for this user no permission checks will be done anyway.
The code now enables `DefaultPermissions` automatically when
`--allow-other` is set, it can be disabled with
`--no-default-permissions` to restore the old behavior.
This option restores the previous behavior of `mount` by disabling the "DefaultPermissions" FUSE option. This allows any user that can access the mountpoint to read any file from the snapshot. Normal FUSE rules apply, so `allow-root` or `allow-other` can be used to allow users besides the mounting user to access these files.
This enforces the Unix permissions of the snapshot files within the mounted filesystem, which will only allow users to access snapshot files if they had access to the file outside of the snapshot.
