fuse: speed up listing very large files #820
Description
Output of restic version
root@user-linux:~# restic version
restic 0.4.0 (v0.4.0-70-g3d1dc63-dirty)
compiled with go1.7.4 on linux/amd64
Expected behavior
no delay to list directory contents
Actual behavior
it take more than 12 minutes
Steps to reproduce the behavior
root@user-linux:~# restic mount -r /data/teste2/ /mnt/ --allow-other --owner-root
enter password for repository:
Now serving the repository at /mnt/
Don't forget to umount after quitting!
****in another terminal
root@user-linux:~# cd /mnt/
root@user-linux:/mnt# ls
snapshots
root@user-linux:/mnt# cd snapshots/2017-02-22T08\:30\:31-03\:00/
root@user-linux:/mnt/snapshots/2017-02-22T08:30:31-03:00# ls
Backup
root@user-linux:/mnt/snapshots/2017-02-22T08:30:31-03:00# time ls
Backup
real 0m0.001s
user 0m0.000s
sys 0m0.000s
root@user-linux:/mnt/snapshots/2017-02-22T08:30:31-03:00# cd Backup/SERVER/WindowsImageBackup/SERVER/Backup\ 2017-02-21\ 213024/
root@user-linux:/mnt/snapshots/2017-02-22T08:30:31-03:00/Backup/SERVER/WindowsImageBackup/SERVER/Backup 2017-02-21 213024# time ls -la total 857713444
-rwxr-xr-x 1 root root 776 Fev 21 21:22 4a66920e-938b-49ab-8ebd-ece661f14c23_AdditionalFilesc3b9f3c7-5e52-4d5e-8b20-19adc95a34c7.xml
-rwxr-xr-x 1 root root 37498 Fev 21 21:22 4a66920e-938b-49ab-8ebd-ece661f14c23_Components.xml
-rwxr-xr-x 1 root root 5520 Fev 21 21:22 4a66920e-938b-49ab-8ebd-ece661f14c23_RegistryExcludes.xml
-rwxr-xr-x 1 root root 3138 Fev 21 21:22 4a66920e-938b-49ab-8ebd-ece661f14c23_Writer0bada1de-01a9-4625-8278-69e735f39dd2.xml
-rwxr-xr-x 1 root root 2168 Fev 21 21:22 4a66920e-938b-49ab-8ebd-ece661f14c23_Writer4dc3bdd4-ab48-4d07-adb0-3bee2926fd7f.xml
-rwxr-xr-x 1 root root 1488 Fev 21 21:22 4a66920e-938b-49ab-8ebd-ece661f14c23_Writer542da469-d3e1-473c-9f4f-7847f01fc64f.xml
-rwxr-xr-x 1 root root 7712 Fev 21 21:22 4a66920e-938b-49ab-8ebd-ece661f14c23_Writer66841cd4-6ded-4f4b-8f17-fd23f8ddc3de.xml
-rwxr-xr-x 1 root root 1628 Fev 21 21:22 4a66920e-938b-49ab-8ebd-ece661f14c23_Writer75dfb225-e2e4-4d39-9ac9-ffaff65ddf06.xml
-rwxr-xr-x 1 root root 1484 Fev 21 21:22 4a66920e-938b-49ab-8ebd-ece661f14c23_Writera6ad56c2-b509-4e6c-bb19-49d8f43532f0.xml
-rwxr-xr-x 1 root root 3828 Fev 21 21:22 4a66920e-938b-49ab-8ebd-ece661f14c23_Writerafbab4a2-367d-4d15-a586-71dbb18f8485.xml
-rwxr-xr-x 1 root root 8578 Fev 21 21:22 4a66920e-938b-49ab-8ebd-ece661f14c23_Writerbe000cbe-11fe-4426-9c58-531aa6355fc4.xml
-rwxr-xr-x 1 root root 1746 Fev 21 21:22 4a66920e-938b-49ab-8ebd-ece661f14c23_Writerd61d61c8-d73a-4eee-8cdd-f6f9786b7124.xml
-rwxr-xr-x 1 root root 3883510 Fev 21 21:22 4a66920e-938b-49ab-8ebd-ece661f14c23_Writere8132975-6f93-4464-a53e-1050253ae220.xml
-rwxr-xr-x 1 root root 4180 Fev 21 21:22 BackupSpecs.xml
-rwxr-xr-x 1 root root 312475648 Fev 21 21:22 d59a8009-4aa9-11e6-80b4-806e6f6e6963.vhdx
-rwxr-xr-x 1 root root 29628563456 Fev 21 21:22 d59a800a-4aa9-11e6-80b4-806e6f6e6963.vhdx
-rwxr-xr-x 1 root root 667455324160 Fev 21 21:22 fbeabc3c-4aa9-11e6-80b5-74867af88755.vhdx
-rwxr-xr-x 1 root root 180898234368 Fev 21 21:22 fbeabe4d-4aa9-11e6-80b5-74867af88755.vhdx
real 12m46.908s
user 0m0.001s
sys 0m0.003s
root@user-linux:/mnt/snapshots/2017-02-22T08:30:31-03:00/Backup/SERVER/WindowsImageBackup/SERVER/Backup 2017-02-21 213024#