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From: Xiaoli Feng <xifeng@redhat.com>
To: CIFS <linux-cifs@vger.kernel.org>
Subject: fallocate can't change the cifs disk space usage
Date: Sun, 2 Aug 2020 22:48:08 -0400 (EDT)	[thread overview]
Message-ID: <506179292.44794805.1596422888744.JavaMail.zimbra@redhat.com> (raw)
In-Reply-To: <1119714633.44793917.1596421202774.JavaMail.zimbra@redhat.com>

Hello all,

Recently when I'm investigating the xfstests generic/213 generic/228 failures for cifs.
Found that fallocate can't change the cifs disk space usage. Comparing xfs fileystem, 
fallocate can update space usage.

My tests is in 5.8.0-rc7+. I also file a bug for this issue. 
  https://bugzilla.kernel.org/show_bug.cgi?id=208775

# cat /etc/samba/smb.conf
[cifs]
path=/mnt/cifs
writeable=yes
# mount //localhost/cifs cifs -o user=root,password=redhat,cache=none,actimeo=0
# df -h cifs
Filesystem        Size  Used Avail Use% Mounted on
//localhost/cifs   36G   23G   13G  66% /root/cifs
#  fallocate -o 0 -l 2g /root/cifs/file1
# df -h cifs
Filesystem        Size  Used Avail Use% Mounted on
//localhost/cifs   36G   23G   13G  66% /root/cifs
]# ls -l cifs
total 1
-rwxr-xr-x. 1 root root 2147483648 Aug  2 21:57 file1

Thanks.

-- 
Best regards!
XiaoLi Feng 冯小丽


       reply	other threads:[~2020-08-03  2:48 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1119714633.44793917.1596421202774.JavaMail.zimbra@redhat.com>
2020-08-03  2:48 ` Xiaoli Feng [this message]
2020-08-03  4:42   ` fallocate can't change the cifs disk space usage Steve French
2020-08-03  8:46     ` Xiaoli Feng
2020-08-03 15:59   ` Steve French
2020-08-03 18:36     ` Steve French
2020-08-04 17:39   ` Steve French
2020-08-06  2:35     ` Xiaoli Feng

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