linux-ext4 - Delayed alloc bug

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Message-ID: <470341D3.7020409@linux.vnet.ibm.com>
Date:	Wed, 03 Oct 2007 12:46:35 +0530
From:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
To:	Alex Tomas <alex@...sterfs.com>,
	linux-ext4 <linux-ext4@...r.kernel.org>
Subject: Delayed alloc bug

We should actually get this error 

dd: writing to `myfile5': No space left on device

root@...0-qemu-image:~# mount /dev/hdc -t ext4dev -o delalloc,data=writeback /ext4
root@...0-qemu-image:/ext4# df -h . 
Filesystem            Size  Used Avail Use% Mounted on
/dev/hdc               49M   46M   94K 100% /ext4
root@...0-qemu-image:/ext4# 
root@...0-qemu-image:/ext4# 
root@...0-qemu-image:/ext4# 
root@...0-qemu-image:/ext4# dd if=/dev/zero of=myfile 
34188+0 records in
34187+0 records out
17503744 bytes (18 MB) copied, 11.2724 seconds, 1.6 MB/s

root@...0-qemu-image:/ext4# df -h . 
Filesystem            Size  Used Avail Use% Mounted on
/dev/hdc               49M   49M     0 100% /ext4
root@...0-qemu-image:/ext4# dd if=/dev/zero of=myfile5
49777+0 records in
49777+0 records out
25485824 bytes (25 MB) copied, 19.7667 seconds, 1.3 MB/s

root@...0-qemu-image:/ext4# df -h . 
Filesystem            Size  Used Avail Use% Mounted on
/dev/hdc               49M   49M     0 100% /ext4
root@...0-qemu-image:/ext4# 
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