Groups > linux.debian.bugs.dist > #1193586

Bug#1017720: nfs-common: No such file or directory

From	Vincent Lefevre <vincent@vinc17.net>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#1017720: nfs-common: No such file or directory
Date	2024-04-09 16:10 +0200
Message-ID	<IrkkF-58EL-1@gated-at.bofh.it> (permalink)
References	(1 earlier) <HFuFH-9GP5-5@gated-at.bofh.it> <Iq90l-4oGU-4359@gated-at.bofh.it> <IriCd-57xm-1@gated-at.bofh.it> <EWjKN-1IQy-5@gated-at.bofh.it> <IriCd-57xm-1@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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On 2024-04-09 14:09:43 +0200, Vincent Lefevre wrote:
> Some additional information: created only once, but data may be
> appended (on the creator's side, the file is created for writing,
> and data are written occasionally, and at some point, the file is
> closed). The error with "open" may occur even several hours after
> the last time data were written to the file.

This is actually reproducible with a read-only directory.
I've attached a Perl script to reproduce the issue, just
based on "stat".

The conditions seem to be:
  * The directory and the files need to be recent enough: I can't
    reproduce the issue with an old directory, even if I add many
    new files into it.
  * Concurrent "stat": with the attached script, the issue is
    reproducible with 2 threads or more, but not with a single
    thread.

Example of errors:

./dir-stat: can't stat . (x 2)
./dir-stat: can't stat 775 (x 148)
./dir-stat: can't stat 772 (x 1)
./dir-stat: can't stat 415 (x 1)
./dir-stat: can't stat 716 (x 1)
./dir-stat: can't stat 453 (x 1)
./dir-stat: can't stat 9 (x 1)
./dir-stat: can't stat 201 (x 1)
./dir-stat: can't stat 981 (x 1)
./dir-stat: can't stat 660 (x 1)
./dir-stat: can't stat 120 (x 1)
./dir-stat: can't stat 127 (x 1)
./dir-stat: can't stat 663 (x 1)

-- 
Vincent Lefèvre <vincent@vinc17.net> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)

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Bug#1017720: nfs-common: No such file or directory Vincent Lefevre <vincent@vinc17.net> - 2024-04-06 09:52 +0200
  Bug#1017720: nfs-common: No such file or directory Vincent Lefevre <vincent@vinc17.net> - 2024-04-09 14:20 +0200
    Bug#1017720: nfs-common: No such file or directory Vincent Lefevre <vincent@vinc17.net> - 2024-04-09 16:10 +0200

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