Kernel needs some time to delete a device after losetup --detach. If the losetup
--find is called just after losetup --delete, it can sometimes attempt to
recycle the device that is just being released. To prevent this race,
clear the AUTOCLEAR flag of the device.
Signed-off-by: Stanislav Brabec <sbrabec@xxxxxxx>
---
sys-utils/losetup.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/sys-utils/losetup.c b/sys-utils/losetup.c
index 28cde2b..ba096fe 100644
--- a/sys-utils/losetup.c
+++ b/sys-utils/losetup.c
@@ -720,6 +720,12 @@ int main(int argc, char **argv)
/* We found a device to recycle. Do not check
* for conflict. If it is conflicting, then
* user was already warned in past. */
+ lc.info.lo_flags &= !LO_FLAGS_AUTOCLEAR;
+ if (loopcxt_set_status(&lc)) {
+ loopcxt_deinit(&lc);
+ errx(EXIT_FAILURE, _("%s: failed to re-use loop device"),
+ loopcxt_get_device(&lc));
+ }
goto got_device;
}
loopcxt_deinit(&lc);
--
2.9.2
--
Best Regards / S pozdravem,
Stanislav Brabec
software developer
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