Please describe the problem.

When a remote is located on a device (network) that systemd is configured to automount but fails to do so, every git-annex command blocks/waits until the automount times out.

Commands that have to access such a remote (e.g., sync, move) are are allowed to block, but commands that only operate on the local repository (e.g., version, add, calckey, find) or another one (sync not-doesnotexist, move --to=not-doesnotexist) should not.

The Bash completion is also affected and blocks at every tab.

Probably related: git-annex causes not missing idle hard drives (as remotes) to spin up for no reason – even for local commands and completions.

What steps will reproduce the problem?

Add a non-existing mount point to /etc/fstab:

/dev/sdoesnotexist  /mnt/doesnotexist  ext4  defaults,noauto,x-systemd.automount,x-systemd.device-timeout=10  0  0

Add a remote pointing to a path on /mnt/doesnotexist:

$ git remote add doesnotexist /mnt/doesnotexist/path/to/repository

Use any git-annex command and wait for at least x-systemd.device-timeout:

$ time git-annex version > /dev/null
real    0m10.433s
user    0m0.171s
sys     0m0.028s

What version of git-annex are you using? On what operating system?

git-annex version: 6.20171214-g61b515d71d                                                                                                                                                     
build flags: Assistant Webapp Pairing Testsuite S3(multipartupload)(storageclasses) WebDAV Inotify DBus DesktopNotify ConcurrentOutput TorrentParser MagicMime Feeds
dependency versions: aws-0.18 bloomfilter-2.0.1.0 cryptonite-0.24 DAV-1.3.1 feed-1.0.0.0 ghc-8.2.2 http-client-0.5.7.1 persistent-sqlite-2.6.4 torrent-10000.1.1 uuid-1.3.13 yesod-1.4.5      
key/value backends: SHA256E SHA256 SHA512E SHA512 SHA224E SHA224 SHA384E SHA384 SHA3_256E SHA3_256 SHA3_512E SHA3_512 SHA3_224E SHA3_224 SHA3_384E SHA3_384 SKEIN256E SKEIN256 SKEIN512E SKEIN512 SHA1E SHA1 MD5E MD5 WORM URL
remote types: git gcrypt p2p S3 bup directory rsync web bittorrent webdav tahoe glacier ddar hook external
local repository version: 5
supported repository versions: 3 5 6
upgrade supported from repository versions: 0 1 2 3 4 5
operating system: linux x86_64

Please provide any additional information below.

strace always includes a call to stat("/mnt/doesnotexist/path/to/repository").

Have you had any luck using git-annex before? (Sometimes we get tired of reading bug reports all day and a lil' positive end note does wonders)

I’m very happy with git-annex (thanks) and use it frequently enough to notice this behavior.

fixed via the remote.<name>.annex-checkuuid config setting that can disable this behavior. --Joey