From: Mikulas Patocka <mpatocka@redhat.com>
To: "Theodore Ts'o" <tytso@mit.edu>,
Andreas Dilger <adilger.kernel@dilger.ca>,
linux-ext4@vger.kernel.org
Cc: Dan Williams <dan.j.williams@intel.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Andrew Morton <akpm@linux-foundation.org>,
Vishal Verma <vishal.l.verma@intel.com>,
Dave Jiang <dave.jiang@intel.com>,
Ira Weiny <ira.weiny@intel.com>,
Matthew Wilcox <willy@infradead.org>, Jan Kara <jack@suse.cz>,
Eric Sandeen <esandeen@redhat.com>,
Dave Chinner <david@fromorbit.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>
Subject: A bug in ext4 with big directories (was: NVFS XFS metadata)
Date: Wed, 23 Sep 2020 05:20:55 -0400 (EDT) [thread overview]
Message-ID: <alpine.LRH.2.02.2009230459450.1800@file01.intranet.prod.int.rdu2.redhat.com> (raw)
In-Reply-To: <20200923024528.GD12096@dread.disaster.area>
Hi
There seems to be a bug in ext4 - when I create very large directory, ext4
fails with -ENOSPC despite the fact that there is plenty of free space and
free inodes on the filesystem.
How to reproduce:
download the program dir-test:
http://people.redhat.com/~mpatocka/benchmarks/dir-test.c
# modprobe brd rd_size=67108864
# mkfs.ext4 /dev/ram0
# mount -t ext4 /dev/ram0 /mnt/test
# dir-test /mnt/test/ 8000000 8000000
deleting: 7999000
2540000
file 2515327 can't be created: No space left on device
# df /mnt/test
/dev/ram0 65531436 633752 61525860 2% /mnt/test
# df -i /mnt/test
/dev/ram0 4194304 1881547 2312757 45% /mnt/test
(I tried to increase journal size, but it has no effect on this bug)
Mikulas
next prev parent reply other threads:[~2020-09-23 9:21 UTC|newest]
Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-15 12:34 [RFC] nvfs: a filesystem for persistent memory Mikulas Patocka
2020-09-15 12:34 ` Mikulas Patocka
2020-09-15 13:00 ` Matthew Wilcox
2020-09-15 13:00 ` Matthew Wilcox
2020-09-15 13:24 ` Mikulas Patocka
2020-09-15 13:24 ` Mikulas Patocka
2020-09-22 10:04 ` Ritesh Harjani
2020-09-22 10:04 ` Ritesh Harjani
2020-09-15 15:16 ` Dan Williams
2020-09-15 15:16 ` Dan Williams
2020-09-15 16:58 ` Mikulas Patocka
2020-09-15 16:58 ` Mikulas Patocka
2020-09-15 17:38 ` Mikulas Patocka
2020-09-15 17:38 ` Mikulas Patocka
2020-09-16 10:57 ` [PATCH] pmem: export the symbols __copy_user_flushcache and __copy_from_user_flushcache Mikulas Patocka
2020-09-16 10:57 ` Mikulas Patocka
2020-09-16 16:21 ` Dan Williams
2020-09-16 16:21 ` Dan Williams
2020-09-16 17:24 ` Mikulas Patocka
2020-09-16 17:24 ` Mikulas Patocka
2020-09-16 17:40 ` Dan Williams
2020-09-16 17:40 ` Dan Williams
2020-09-16 18:06 ` Mikulas Patocka
2020-09-16 18:06 ` Mikulas Patocka
2020-09-21 16:20 ` NVFS XFS metadata (was: [PATCH] pmem: export the symbols __copy_user_flushcache and __copy_from_user_flushcache) Mikulas Patocka
2020-09-21 16:20 ` Mikulas Patocka
2020-09-22 5:03 ` Dave Chinner
2020-09-22 5:03 ` Dave Chinner
2020-09-22 16:46 ` Mikulas Patocka
2020-09-22 16:46 ` Mikulas Patocka
2020-09-22 17:25 ` Matthew Wilcox
2020-09-22 17:25 ` Matthew Wilcox
2020-09-24 15:00 ` Mikulas Patocka
2020-09-24 15:00 ` Mikulas Patocka
2020-09-28 15:22 ` Mikulas Patocka
2020-09-28 15:22 ` Mikulas Patocka
2020-09-23 2:45 ` Dave Chinner
2020-09-23 2:45 ` Dave Chinner
2020-09-23 9:20 ` Mikulas Patocka [this message]
2020-09-23 9:44 ` A bug in ext4 with big directories (was: NVFS XFS metadata) Jan Kara
2020-09-23 12:46 ` Mikulas Patocka
2020-09-23 20:20 ` Andreas Dilger
2020-09-23 17:19 ` NVFS XFS metadata (was: [PATCH] pmem: export the symbols __copy_user_flushcache and __copy_from_user_flushcache) Mikulas Patocka
2020-09-23 17:19 ` Mikulas Patocka
2020-09-23 9:57 ` Jan Kara
2020-09-23 9:57 ` Jan Kara
2020-09-23 13:11 ` Mikulas Patocka
2020-09-23 13:11 ` Mikulas Patocka
2020-09-23 15:04 ` Matthew Wilcox
2020-09-23 15:04 ` Matthew Wilcox
2020-09-22 12:28 ` Matthew Wilcox
2020-09-22 12:28 ` Matthew Wilcox
2020-09-22 12:39 ` Mikulas Patocka
2020-09-22 12:39 ` Mikulas Patocka
2020-09-16 18:56 ` [PATCH] pmem: fix __copy_user_flushcache Mikulas Patocka
2020-09-16 18:56 ` Mikulas Patocka
2020-09-18 1:53 ` Dan Williams
2020-09-18 1:53 ` Dan Williams
2020-09-18 12:25 ` the "read" syscall sees partial effects of the "write" syscall Mikulas Patocka
2020-09-18 13:13 ` Jan Kara
2020-09-18 18:02 ` Linus Torvalds
2020-09-20 23:41 ` Dave Chinner
2020-09-17 6:50 ` [PATCH] pmem: export the symbols __copy_user_flushcache and __copy_from_user_flushcache Christoph Hellwig
2020-09-17 6:50 ` Christoph Hellwig
2020-09-21 16:19 ` [RFC] nvfs: a filesystem for persistent memory Mikulas Patocka
2020-09-21 16:19 ` Mikulas Patocka
2020-09-21 16:29 ` Dan Williams
2020-09-21 16:29 ` Dan Williams
2020-09-22 15:43 ` Ira Weiny
2020-09-22 15:43 ` Ira Weiny
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=alpine.LRH.2.02.2009230459450.1800@file01.intranet.prod.int.rdu2.redhat.com \
--to=mpatocka@redhat.com \
--cc=adilger.kernel@dilger.ca \
--cc=akpm@linux-foundation.org \
--cc=dan.j.williams@intel.com \
--cc=dave.jiang@intel.com \
--cc=david@fromorbit.com \
--cc=esandeen@redhat.com \
--cc=ira.weiny@intel.com \
--cc=jack@suse.cz \
--cc=linux-ext4@vger.kernel.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=torvalds@linux-foundation.org \
--cc=tytso@mit.edu \
--cc=viro@zeniv.linux.org.uk \
--cc=vishal.l.verma@intel.com \
--cc=willy@infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.