diff options
Diffstat (limited to 'guix/scripts/offload.scm')
| -rw-r--r-- | guix/scripts/offload.scm | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/guix/scripts/offload.scm b/guix/scripts/offload.scm index 18af511ed8..b3b502425c 100644 --- a/guix/scripts/offload.scm +++ b/guix/scripts/offload.scm @@ -181,7 +181,8 @@ determined." #:key (error-port (current-error-port)) (quote? #t)) "Run COMMAND (a string list) on MACHINE, assuming an lsh gateway has been set up. When QUOTE? is true, perform shell-quotation of all the elements of -COMMAND." +COMMAND. Return either a pipe opened with MODE, or #f if the lsh client could +not be started." (define (shell-quote str) ;; Sort-of shell-quote STR so it can be passed as an argument to the ;; shell. @@ -315,8 +316,17 @@ hook." (let ((root-directory (string-append %state-directory "/gcroots/tmp"))) (false-if-exception (mkdir root-directory)) - (symlink ,file - (string-append root-directory "/" ,%gc-root-file))))) + (catch 'system-error + (lambda () + (symlink ,file + (string-append root-directory "/" ,%gc-root-file))) + (lambda args + ;; If FILE already exists, we can assume that either it's a stale + ;; reference (which is fine), or another process is already + ;; building the derivation represented by FILE (which is fine + ;; too.) Thus, do nothing in that case. + (unless (= EEXIST (system-error-errno args)) + (apply throw args))))))) (let ((pipe (remote-pipe machine OPEN_READ `("guile" "-c" ,(object->string script))))) @@ -535,7 +545,7 @@ allowed on MACHINE." (line (read-line pipe))) (close-pipe pipe) (if (eof-object? line) - 1. + +inf.0 ;MACHINE does not respond, so assume it is infinitely loaded (match (string-tokenize line) ((one five fifteen . _) (let* ((raw (string->number five)) @@ -546,7 +556,7 @@ allowed on MACHINE." (build-machine-name machine) raw normalized) normalized)) (_ - 1.))))) + +inf.0))))) ;something's fishy about MACHINE, so avoid it (define (machine-less-loaded? m1 m2) "Return #t if the load on M1 is lower than that on M2." |