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| author | Ludovic Courtès <ludo@gnu.org> | 2018-09-23 23:31:52 +0200 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2018-09-23 23:34:17 +0200 |
| commit | fce225471128c4a5246342b3aa1b7e53a8066211 (patch) | |
| tree | b0b0215faf72c88ec74a20cce602dee15aef55a5 /gnu/system/vm.scm | |
| parent | b5460d95e970608bee7a794590be1b051b57d3a3 (diff) | |
| download | guix-fce225471128c4a5246342b3aa1b7e53a8066211.tar guix-fce225471128c4a5246342b3aa1b7e53a8066211.tar.gz | |
vm: Use "cache=loose" for all 9p mounts.
This significantly improves read throughput when running things like
"guix hash -r ...".
* gnu/system/vm.scm (%linux-vm-file-systems): Add 'flags' for "store".
Add "cache=loose" to every file system.
Diffstat (limited to 'gnu/system/vm.scm')
| -rw-r--r-- | gnu/system/vm.scm | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/gnu/system/vm.scm b/gnu/system/vm.scm index 435501d726..a1b595d45d 100644 --- a/gnu/system/vm.scm +++ b/gnu/system/vm.scm @@ -99,21 +99,28 @@ (device "store") (type "9p") (needed-for-boot? #t) - (options "trans=virtio") + (flags '(read-only)) + (options "trans=virtio,cache=loose") (check? #f)) + + ;; The 9p documentation says that cache=loose is "intended for + ;; exclusive, read-only mounts", without additional details. In + ;; practice it seems to work well for these, and it's much faster than + ;; the default cache=none, especially when copying and registering + ;; store items. (file-system (mount-point "/xchg") (device "xchg") (type "9p") (needed-for-boot? #t) - (options "trans=virtio") + (options "trans=virtio,cache=loose") (check? #f)) (file-system (mount-point "/tmp") (device "tmp") (type "9p") (needed-for-boot? #t) - (options "trans=virtio") + (options "trans=virtio,cache=loose") (check? #f)))) (define not-config? |