diff options
Diffstat (limited to 'src/shared/switch-root.c')
| -rw-r--r-- | src/shared/switch-root.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/src/shared/switch-root.c b/src/shared/switch-root.c index 5f075e6003..bac0e5c349 100644 --- a/src/shared/switch-root.c +++ b/src/shared/switch-root.c @@ -62,10 +62,9 @@ int switch_root(const char *new_root, const char *oldroot, bool detach_oldroot, return -errno; } - /* Work-around for a kernel bug: for some reason the kernel - * refuses switching root if any file systems are mounted - * MS_SHARED. Hence remount them MS_PRIVATE here as a - * work-around. + /* Work-around for kernel design: the kernel refuses switching + * root if any file systems are mounted MS_SHARED. Hence + * remount them MS_PRIVATE here as a work-around. * * https://bugzilla.redhat.com/show_bug.cgi?id=847418 */ if (mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) < 0) @@ -128,10 +127,10 @@ int switch_root(const char *new_root, const char *oldroot, bool detach_oldroot, /* Immediately get rid of the old root, if detach_oldroot is set. * Since we are running off it we need to do this lazily. */ - if (detach_oldroot && umount2(oldroot, MNT_DETACH) < 0) { - log_error("Failed to umount old root dir %s: %m", oldroot); - return -errno; - } + if (detach_oldroot && umount2(oldroot, MNT_DETACH) < 0) + log_error("Failed to lazily umount old root dir %s, %s: %m", + oldroot, + errno == ENOENT ? "ignoring" : "leaving it around"); } else if (mount(new_root, "/", NULL, MS_MOVE, NULL) < 0) { log_error("Failed to mount moving %s to /: %m", new_root); |