2.2 gb file limit?

Orion

I've got two Ubuntu boxes here. One is Feisty 32bit and the other is Mythbuntu (I thought it was 64bit but now I'm not so sure).

When trying to copy a file that's 4.4 gb using scp, standard copy/paste or scp it dies at about 2.2gb on both systems. I can copy the same file perfectly on a Windows box. All partitions are either Ext3 or XFS. I thought that the 2.2 limit was raised in kernel 2.6 - am I wrong?

How can I check whether my Mythbuntu installation is 64 bit or not?

uname -r
2.6.24-19-generic

cat /etc/lsb-release 
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=8.04
DISTRIB_CODENAME=hardy
DISTRIB_DESCRIPTION="Ubuntu 8.04.1"

mr_angry

The maximum file size is dependent on the block size used by your file system, but I believe it defaults normally to 4KB blocks, so you should have a maximum file size of ~2 terabytes. Sounds like your hitting some other kind of network IO limit, or something.

Sorry I couldn't be of more help!

Orion

I don't think that it's a network io limit - I can copy the file to a nas from the windows box. One thing I forgot to mention is that this file is actually on a linux box - it was ftp-ed to it no problem. But I can't copy it from the linux box to the nas or the other linux box from linux - but I can from Windows

mr_angry

What protocol are you using to execute the copy? SCP?

Orion

tried scp to the myth from feisty - initiated on both pcs. copy and paste to an nfs mount on the nas. ftp and nfs mount copy from the nas to myth. All failed at 2.2gb. FTP to the nas from Feisty worked I think - I was getting a bit frustrated last night trying to figure it out so can't remember all the steps I took.

[edit]I've just checked my downloads folder and the only copy of mythbuntu there is 64-bit so I assume that's what's on the box - how can I check that?

Orion

Don't know if this is relevant but:

steve@bas-tyra:~$ sudo dumpe2fs -h /dev/sda3 | grep -i "block size"
dumpe2fs 1.40.8 (13-Mar-2008)
dumpe2fs: Bad magic number in super-block while trying to open /dev/sda3

sda3 is XFS.

Snowbat

dumpe2fs is for ext2/ext3 filesystems only. The equivalent command for the XFS filesystem is xfs_info.

Khannie

I've no idea why that would fail. Maybe try rsync. Is there definitely enough free disk space?

Macros42 wrote: »

[edit]I've just checked my downloads folder and the only copy of mythbuntu there is 64-bit so I assume that's what's on the box - how can I check that?

uname -m

or

uname -a

Orion

It is AMD64 - I discovered that when I tried to install Flash in FF

definitely enough free space.

I'm now thinking that it may be a network flooding issue. Had a problem downloading a 1gb file to the nas on my Feisty32 box. I'm going to upgrade the firmware on the nas and maybe get a cheap gigabit switch.

@Khannie - stay tuned for my post on video stutters on my HTPC - Gigabyte mb with onboard ATI card

trellheim

what's it say when it's halted ? anything ?

cat bigfile > bigfilename_on_other_drive .. how does that do

when it halts open another window, ps -ef|grep cp

strace -f -p <cp pid>

see why it's waiting

Sligo 2008

jim