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linux-initrd: Allow unionfs to have a large number of open files.

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Fixes <http://bugs.gnu.org/17827>.

* guix/build/linux-initrd.scm (mount-root-file-system) [volatile-root?]:
  Pass unionfs '-o max_file=65536'.
This commit is contained in:
Ludovic Courtès 2014-06-21 17:35:56 +02:00
parent 738146bfd4
commit 9b9148d8bb
1 changed files with 5 additions and 2 deletions
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7
guix/build/linux-initrd.scm
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@ -439,9 +439,12 @@ (define (mark-as-not-killable pid)
;; We want read-write /dev nodes.
(make-essential-device-nodes #:root "/rw-root")
;; Make /root a union of the tmpfs and the actual root.
;; Make /root a union of the tmpfs and the actual root. Use
;; 'max_files' to set a high RLIMIT_NOFILE for the unionfs process
;; itself. Failing to do that, we quickly run out of file
;; descriptors; see <http://bugs.gnu.org/17827>.
(unless (zero? (system* unionfs "-o"
"cow,allow_other,use_ino,suid,dev"
"cow,allow_other,use_ino,suid,dev,max_files=65536"
"/rw-root=RW:/real-root=RO"
"/root"))
(error "unionfs failed"))