search for: snapfs

Hi Stephen, I'm one of developers of SnapFS, which based on Ext3. I got Assertion failure from SnapFS, at ext3_new_block() in fs/ext3/balloc.c: J_ASSERT (!test_and_set_bit(BH_Alloced, &bh->b_state)) If J_ASSERT is only use as debug, why it will modify data? I found the 'BH_Alloced' flag only occures at two place: one is bal...

...ionality as they would have on a Netapp NFS share. The O/S I will be using is CentOS 5 or 6 (max flex on which one) and the hardware is a disk array directly (12 SAS disks 7TB un-configured brand new) attached to a HP 580 G 7. I've done some reading on ZFS on Linux ,fuse-ZFS, BRTFS ,rsnapshot, snapFS. Any one have some advice or experiences to share? Thanks, spuds

Hi, A system running ext3 crashed this afternoon (nothing to do with ext3, bad network driver). Is was saving a file from emacs when it happened. The file system is 0.06b and had ordered data as the mount option. Let me emphasize this was running ext3 pure, not with SnapFS or InterMezzo layered on top of it. strace reveals that Emacs does open("existing file name", O_TRUNC | O_CREAT | O_RDWR) and then writes the data out. When coming back up the file had a 4k block of zeroes in the middle. This seems somewhat suspicious, but it's likely that I'm...