aboutsummaryrefslogtreecommitdiff
path: root/gnu/build
diff options
context:
space:
mode:
Diffstat (limited to 'gnu/build')
-rw-r--r--gnu/build/install.scm23
1 files changed, 21 insertions, 2 deletions
diff --git a/gnu/build/install.scm b/gnu/build/install.scm
index 33a9616c0d..d4982650c1 100644
--- a/gnu/build/install.scm
+++ b/gnu/build/install.scm
@@ -1,5 +1,5 @@
;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2013-2020, 2022 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2016 Chris Marusich <cmmarusich@gmail.com>
;;; Copyright © 2022 Maxim Cournoyer <maxim.cournoyer@gmail.com>
;;;
@@ -282,12 +282,31 @@ disk."
(mount "/.rw-store" (%store-directory) "" MS_MOVE)
(rmdir "/.rw-store")))
+(define (umount* directory)
+ "Unmount DIRECTORY, but retry a few times upon EBUSY."
+ (let loop ((attempts 5))
+ (catch 'system-error
+ (lambda ()
+ (umount directory))
+ (lambda args
+ (if (and (= EBUSY (system-error-errno args))
+ (> attempts 0))
+ (begin
+ (sleep 1)
+ (loop (- attempts 1)))
+ (apply throw args))))))
+
(define (unmount-cow-store target backing-directory)
"Unmount copy-on-write store."
(let ((tmp-dir "/remove"))
(mkdir-p tmp-dir)
(mount (%store-directory) tmp-dir "" MS_MOVE)
- (umount tmp-dir)
+
+ ;; We might get EBUSY at this point, possibly because of lingering
+ ;; processes with open file descriptors. Use 'umount*' to retry upon
+ ;; EBUSY, leaving a bit of time. See <https://issues.guix.gnu.org/59884>.
+ (umount* tmp-dir)
+
(rmdir tmp-dir)
(delete-file-recursively
(string-append target backing-directory))))