Marc MERLIN wrote on 2016/02/10 22:31 -0800:
On Tue, Jan 26, 2016 at 09:03:07AM +0800, Qu Wenruo wrote:
If the fs is small enough, would you please do a btrfs-image dump?
That would help a lot to locate the direct cause.
I started making a dump, image was growing past 3GB, and then it failed
and the image got deleted:
gargamel:~# btrfs-image -s -c 9 /dev/mapper/dshelf1old /mnt/dshelf1/ds1old.dump
Error adding space cache blocks -5
It seems that btrfs-image failed to read space cache, in
read_data_extent() function.
And since there is no "Couldn't map the block XXXX" error message,
either some device is missing or pread64 failed to read the desired data.
Error flushing pending -5
create failed (Success)
gargamel:~# dpkg --status btrfs-tools
Package: btrfs-tools
Status: install ok installed
Priority: optional
Section: admin
Installed-Size: 3605
Maintainer: Dimitri John Ledkov <xnox@xxxxxxxxxx>
Architecture: amd64
Version: 4.4-1
Is there a 4G file size limit, or did I hit another problem?
For the 4G file size limit, did you mean the limit from old filesystem
like FAT32?
I didn't think there is such limit for modern Linux filesystem, or
normal read/write operation won't has such limit either.
Thanks,
Qu
Thanks,
Marc
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