Bug 863749 - applications freeze on access to non-existent devices with automount
applications freeze on access to non-existent devices with automount
Product: Fedora
Classification: Fedora
Component: systemd (Show other bugs)
x86_64 Linux
unspecified Severity unspecified
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Assigned To: systemd-maint
Fedora Extras Quality Assurance
Depends On:
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Reported: 2012-10-07 03:27 EDT by Andrew Travneff
Modified: 2014-12-11 04:17 EST (History)
12 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2014-12-11 04:17:49 EST
Type: Bug
Regression: ---
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
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Attachments (Terms of Use)
strace log (6.97 KB, text/plain)
2012-10-07 03:27 EDT, Andrew Travneff
no flags Details

  None (edit)
Description Andrew Travneff 2012-10-07 03:27:28 EDT
Created attachment 622907 [details]
strace log

Description of problem:
I have some records in fstab describing devices which can be absent (HDD not plugged).
I enabled automount for them and expected just a file open error if any application tries to access file on an absent device. Actual behaviour is that application freezes forever (more than systemd mount timeout).

Example record in fstab:

UUID=0E64-0E6B   /mnt/test   vfat       x-systemd.automount,x-systemd.device-timeout=7,rw,nosuid,nodev,noexec,user,utf8,shortname=mixed   0 0

Strace of `/bin/ls /mnt/test` attached, it hangs at stat("/mnt/test") for that case.

Version-Release number of selected component (if applicable):

How reproducible:

Might be related: RHBZ#859374
Comment 1 Fedora End Of Life 2013-07-03 23:35:18 EDT
This message is a reminder that Fedora 17 is nearing its end of life.
Approximately 4 (four) weeks from now Fedora will stop maintaining
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this bug will be closed as WONTFIX if it remains open with a Fedora 
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Comment 2 Heldwin 2013-12-19 14:30:24 EST
It also happens in F20
Comment 3 Heldwin 2013-12-19 14:34:15 EST

with a 10 sec time out, after the 10 seconds I tried to access it, I get these messages:
systemd: Timed out waiting for device dev-sdb1.device.
systemd: Dependency failed for /mnt/backup.
Comment 4 Jan Synacek 2014-12-11 04:17:49 EST
I can't reproduce this.


If this is still a problem for anybody, please, reopen this bugzilla with and attach a reproducer.

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