Hi all,

I don't have a good track record with XFS since I got rid of ReiserFS a
long time ago. I decided XFS was a good idea on servers, while I tested
BTRFS on various less important devices.
So far, XFS betrayed me far more often (a few times) than BTRFS
(never).
Last time was yesterday, on a root filesystem with "Block out of range:
block 0x17b9814b0, EOFS 0x12a000" "I/O Error Detected. Shutting down
filesystem" (shutting down the root filesystem is pretty hard).

Some threads on this ML discuss a similar problem, related to
partitioning and logical sectors located just after the end of the
partition. The problem here does not seem to be the same, as the
requested block is very far out of bound (2 orders of magnitude too
far), and I use a recent Debian stock kernel with every security patch.

My question is : should I trust XFS for small root filesystems (/,
/tmp, /var on LVM sitting within md-RAID1 smallish partition), or is
BTRFS finally trusty enough for a general purpose cluster (still root
et al. filesystems), or do you guys just use the distro-recommended
setup (typically Ext4 on plain disks) ?

Debian stretch with 4.9.110-3+deb9u4 kernel.
Ceph 12.2.8 on bluestore (not related to the question).

Partial output of lsblk /dev/sdc /dev/nvme0n1:
NAME                          MAJ:MIN RM   SIZE RO TYPE  MOUNTPOINT
sdc                             8:32   0 447,1G  0 disk  
├─sdc1                          8:33   0  55,9G  0 part  
│ └─md0                         9:0    0  55,9G  0 raid1 
│   ├─oxygene_system-root     253:4    0   9,3G  0 lvm   /
│   ├─oxygene_system-tmp      253:5    0   9,3G  0 lvm   /tmp
│   └─oxygene_system-var      253:6    0   4,7G  0 lvm   /var
└─sdc2                          8:34   0  29,8G  0 part  [SWAP]
nvme0n1                       259:0    0   477G  0 disk  
├─nvme0n1p1                   259:1    0  55,9G  0 part  
│ └─md0                         9:0    0  55,9G  0 raid1 
│   ├─oxygene_system-root     253:4    0   9,3G  0 lvm   /
│   ├─oxygene_system-tmp      253:5    0   9,3G  0 lvm   /tmp
│   └─oxygene_system-var      253:6    0   4,7G  0 lvm   /var
├─nvme0n1p2                   259:2    0  29,8G  0 part  [SWAP]

TIA !

-- 
Nicolas Huillard
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