479766 – sys-boot/grub-2.00_p5086: "File descriptor leaked on vgs invocation" during grub2-mkconfig

Bug 479766 - sys-boot/grub-2.00_p5086: "File descriptor leaked on vgs invocation" during grub2-mkconfig

Summary: sys-boot/grub-2.00_p5086: "File descriptor leaked on vgs invocation" during g...

Status:	RESOLVED FIXED

Alias:	None

Product:	Gentoo Linux
Classification:	Unclassified
Component:	[OLD] Core system (show other bugs)
Hardware:	All Linux

Importance:	Normal normal (vote)
Assignee:	Mike Gilbert

URL:	https://savannah.gnu.org/bugs/index.p...
Whiteboard:
Keywords:

Depends on:
Blocks:

Reported:	2013-08-05 01:03 UTC by Coacher
Modified:	2013-08-16 18:09 UTC (History)
CC List:	1 user (show)

See Also:
Package list:
Runtime testing required:	---

Attachments
emerge --info grub (info,5.05 KB, text/plain) 2013-08-05 01:04 UTC, Coacher	Details
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Description Coacher 2013-08-05 01:03:22 UTC

Hello.

After upgrade to sys-boot/grub-2.00_p5086 I have the following warning(?) messages during grub2-mkconfig invocation:

File descriptor 4 (pipe:[1016827]) leaked on vgs invocation. Parent PID 28778: /usr/sbin/grub2-probe
File descriptor 5 (pipe:[1016826]) leaked on vgs invocation. Parent PID 28778: /usr/sbin/grub2-probe
File descriptor 4 (pipe:[1017877]) leaked on vgs invocation. Parent PID 28787: /usr/sbin/grub2-probe
File descriptor 5 (pipe:[1017876]) leaked on vgs invocation. Parent PID 28787: /usr/sbin/grub2-probe
File descriptor 4 (pipe:[1017896]) leaked on vgs invocation. Parent PID 28794: /usr/sbin/grub2-probe
File descriptor 5 (pipe:[1017895]) leaked on vgs invocation. Parent PID 28794: /usr/sbin/grub2-probe
File descriptor 4 (pipe:[1017923]) leaked on vgs invocation. Parent PID 28801: /usr/sbin/grub2-probe
File descriptor 5 (pipe:[1017922]) leaked on vgs invocation. Parent PID 28801: /usr/sbin/grub2-probe
File descriptor 4 (pipe:[1017338]) leaked on vgs invocation. Parent PID 28808: /usr/sbin/grub2-probe
File descriptor 5 (pipe:[1017930]) leaked on vgs invocation. Parent PID 28808: /usr/sbin/grub2-probe

Machine boots fine with generated config, but there were no such warnings on grub-2.00-r4.

Partition layout:
/boot is on RAID 1 via mdadm, / and /var are lvm volumes on top of RAID 5 via mdadm.
grub installed via `grub2-install /dev/sd{a,b,c,d}`. Hard drives are GPT formatted.

If there is any other needed info I am ready to provide it.

Reproducible: Always

Comment 1 Coacher 2013-08-05 01:04:56 UTC

Created attachment 355136 [details]
emerge --info grub

Comment 2 Mike Gilbert gentoo-dev

2013-08-05 01:32:06 UTC

It seems that sys-fs/lvm2 has a silly "feature" that warns you about "leaked" file descriptors by default. It is easy enough to reproduce:

#!/bin/sh
exec 3>/dev/null
lvs

As a workaround, you can set LVM_SUPPRESS_FD_WARNINGS in the environment. The warnings are completely harmless from what I can tell.

Comment 3 Mike Gilbert gentoo-dev

2013-08-05 01:53:34 UTC

Upstream bug in URL.

Comment 4 Coacher 2013-08-05 04:27:08 UTC

Thanks for explanation and reporting this upstream.

Comment 5 Mike Gilbert gentoo-dev

2013-08-16 00:55:40 UTC

Do you still see this with grub-2.00_p5107?

Comment 6 Coacher 2013-08-16 18:09:50 UTC

(In reply to Mike Gilbert from comment #5)
> Do you still see this with grub-2.00_p5107?

Just tested it. No such messages are produced anymore. The problem is resolved, thanks.