(its finished now) Hi Folks, I finally have a chance to work on my previously reported issue with btrfs where I can't write more than about 15-TB to a single partition. Here's the machine: Supermicro X9DRH mobo 2-ea Xeon E5-2643 64-GB RAM 1-ea LSI MegaRAID SAS 2208 RAID controller 2-ea SSD 120-GB drives configured as RAID-1 mirror 24-ea 2-TB SATA drives configured as two 11-disk RAID-6 arrays with 2-hotswaps So I loaded 13.1 beta1 and pulled a "zipper dup". Here are my initial observations. 1. No more reiserfs! 2. The installer complains about using XFS on the boot partition 3. The installer complains if the boot partition is less than 12-MB (good!) But the installer won't let the install proceed past the final summary screen if I have multiple system partitions. It complains that there isn't enough room for the selected packages (default load). There is room, but it complains nevertheless. Here's the error: "Not enough disk space. Remove some packages in the Single Selection" The screen said that 3.2-GB was required, but there was more than 50-GB available. I got around the error by just having one swap and one root partition. I configured the root partition and one of the data arrays with btrfs. The second data array was formatted as XFS. The test uses dd to copy a 4-GB binary file in ~root on the SSD disk to the btrfs array that contains 17576753152 1K-blocks as reported by df. The copy is repeated 4,000 times. The process is then repeated for the XFS array. Failure: The btrfs process failed when creating file #3688 when the file length truncated. But it went on to create 6 more truncated files after the initial failure, as shown here: -rw-r--r-- 1 root root 4194304000 Oct 15 23:37 test3686 -rw-r--r-- 1 root root 4194304000 Oct 15 23:37 test3687 -rw-r--r-- 1 root root 938475520 Oct 15 23:38 test3688 -rw-r--r-- 1 root root 41943040 Oct 15 23:38 test3689 -rw-r--r-- 1 root root 114294784 Oct 15 23:38 test3690 -rw-r--r-- 1 root root 2097152 Oct 15 23:38 test3691 -rw-r--r-- 1 root root 2097152 Oct 15 23:38 test3697 -rw-r--r-- 1 root root 2097152 Oct 15 23:38 test3703 -rw-r--r-- 1 root root 8388608 Oct 15 23:39 test3819 df shows this: /dev/sdb1 17576753152 15140885368 2434798528 87% /export/data0 While dd reported: dd: failed to open test3818: No space left on device So this is a rather messy failure. But the XFS formatted filesystem worked as expected. /dev/sdc1 17574666240 16384034856 1190631384 94% /export/data1 Times for the two process are: btrfs real 365m4.381s user 0m6.292s sys 128m51.396s XFS real 282m6.769s user 0m10.008s sys 177m24.177s Thus XFS seems to be faster by a fair margin, even when writing more data. Regards, Lew -- To unsubscribe, e-mail: opensuse-factory+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-factory+owner@opensuse.org