Hi Harris,
Thanks for giving this strace output.
Actually the bug is not in glusterfs's statfs(), but is in the way the 'df'
works in old version and new version.
In new version, it gets every information from statfs() only, where it works
fine. But with Gentoo (ie, the old coreutils), it gets f_bfree field (or say
st_blksize from stat()) is taken from stat(), where it is different as fuse
overrides the values sent by us to 4096.
This reduces your storage's size by 256 times. This change in statfs was
brought as to enhance the read/write as few applications send buffers
depending on this field.
Anyways, reverting it back to how it was earlier. So it should work fine
now. (patch-292)
-amar
On 7/10/07, Harris Landgarten <harrisl@xxxxxxxxxxxxx> wrote:
Relevant strace output.
Ubuntu
statfs64("/mnt/glusterfs", 84, {f_type=0x65735546, f_bsize=1048576,
f_blocks=300616, f_bfree=278894, f_bavail=263624, f_files=39092224,
f_ffree=38579410, f_fsid={0, 0}, f_namelen=255,0
write(1, "glusterfs 294G 22G"..., 59glusterfs
294G 22G 258G 8% /mnt/glusterfs
Gentoo
statfs64("/mnt/glusterfs", 84, {f_type=0x65735546, f_bsize=1048576,
f_blocks=300616, f_bfree=278894, f_bavail=263624, f_files=39092224,
f_ffree=38579410, f_fsid={0, 0}, f_namelen=255, f_frsize=4096}) = 0
stat64("/mnt/glusterfs", {st_mode=S_IFDIR|0777, st_size=4096, ...}) = 0
open("/proc/mounts", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0xb7fae000
read(3, "rootfs / rootfs rw 0 0\n/dev/root"..., 1024) = 503
stat64("/mnt/glusterfs", {st_mode=S_IFDIR|0777, st_size=4096, ...}) = 0
close(3) = 0
munmap(0xb7fae000, 4096) = 0
write(1, "glusterfs 1.2G 85M"..., 59glusterfs
1.2G 85M 1.1G 8% /mnt/glusterfs
Harris
----- Original Message -----
From: "Harris Landgarten" <harrisl@xxxxxxxxxxxxx>
To: "Harris Landgarten" <harrisl@xxxxxxxxxxxxx>
Cc: "gluster-devel" <gluster-devel@xxxxxxxxxx>
Sent: Tuesday, July 10, 2007 10:04:35 AM (GMT-0500) America/New_York
Subject: Re: Patch 290 breaks df -h calc on some clients.
Ubuntu client is running coreutils-5.96. The Gentoo client is running
coreutils-6.9-r1
Harris
----- Original Message -----
From: "Harris Landgarten" <harrisl@xxxxxxxxxxxxx>
To: "gluster-devel" <gluster-devel@xxxxxxxxxx>
Sent: Tuesday, July 10, 2007 9:06:46 AM (GMT-0500) America/New_York
Subject: Patch 290 breaks df -h calc on some clients.
After upgrading all servers and clients to patch 290
Ubuntu-6.06 client
glusterfs 294G 22G 258G 8% /mnt/glusterfs
This is correct.
Gentoo client
glusterfs 1.2G 85M 1.1G 8% /mnt/glusterfs
This bug was fixed earlier and is now broken again.
Harris
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--
Amar Tumballi
http://amar.80x25.org
[bulde on #gluster/irc.gnu.org]
