Setting `compression` on subvolume causes `BTRFS error (device sda5): error inheriting props for ino [inode] (root 419): -28`

2015-03-08 Thread Karl-Philipp Richter
Hi, Setting the `compression` property on a subvolume on Linux 4.0-rc2 with btrfs-progs 3.18.2 causes the error `BTRFS error (device sda5): error inheriting props for ino [inode] (root 419): -28` to be logged to `/var/log/syslog` (where `[inode]` is a number). I assume that setting compression on

Clone or Backup Filesystem with compression and dedup

2015-03-08 Thread dave
Greetings, I've searched the wiki and the web looking for possible answers to this question and haven't found information that addresses this use case specifically. I would greatly appreciate your help or pointing me in the right direction. Thanks in advance! Dave Use case: I have a 5TB

kernel BUG at fs/btrfs/root-tree.c

2015-03-08 Thread Martin Ziegler
For no apparent reason I cannot longer mount my RAID1-pair of 500GB-disks read/write. If I do this, the kernel crashes invariably a few seconds after the first read attempt. The syslog contains always: kernel: BTRFS critical (device sdc): unable to update root key 5 132 0 kernel:

Re: btrfs oops while mounting fuzzed btrfs image

2015-03-08 Thread Qu Wenruo
Original Message Subject: Re: btrfs oops while mounting fuzzed btrfs image From: Eric Sandeen sand...@redhat.com To: Omar Sandoval osan...@osandov.com, Qu Wenruo quwen...@cn.fujitsu.com, Chris Mason c...@fb.com, David Sterba dste...@suse.cz Date: 2015年03月06日 23:46 On

Re: Clone or Backup Filesystem with compression and dedup

2015-03-08 Thread Duncan
dave posted on Sun, 08 Mar 2015 11:43:49 -0600 as excerpted: Greetings, I've searched the wiki and the web [...] Thanks for letting us know you already know about the wiki. =:^) Just in case it's a different wiki... https://btrfs.wiki.kernel.org Use case: I have a 5TB single drive

Explain the precedence of btrfs properties over mount options

2015-03-08 Thread Karl-Philipp Richter
Hi, The manpage of `btrfs property` would be a good place to explain the precedence of properties over mount options, e.g. what happens when the mount option `compress` is set to `zlib` and the property for same subvolume is set to `` (indicating no compression as you know)? What happens when