Re: I/O errors block the entire filesystem

2013-05-15 Thread Alexandre Oliva
On May 15, 2013, Josef Bacik wrote: > So this should only happen in the case that you are on a dm device it looks > like, is that how you are running? That was my first thought, but no, I'm using partitions out of the SATA disks directly. I even checked for stray dm out of fake raid or somesuch

Re: I/O errors block the entire filesystem

2013-05-15 Thread Alexandre Oliva
On May 14, 2013, Liu Bo wrote: >> In one of the failures that caused machine load spikes, I tried to >> collect info on active processes with perf top and SysRq-T, but nothing >> there seemed to explain the spike. Thoughts on how to figure out what's >> causing this? > Although I've seen your s

Re: I/O errors block the entire filesystem

2013-05-15 Thread Josef Bacik
On Sat, May 11, 2013 at 01:16:38AM -0600, Alexandre Oliva wrote: > On Apr 4, 2013, Alexandre Oliva wrote: > > > I've been trying to figure out the btrfs I/O stack to try to understand > > why, sometimes (but not always), after a failure to read a (data > > non-replicated) block from the disk, th

Re: I/O errors block the entire filesystem

2013-05-14 Thread Liu Bo
On Thu, Apr 04, 2013 at 01:10:27PM -0300, Alexandre Oliva wrote: > I've been trying to figure out the btrfs I/O stack to try to understand > why, sometimes (but not always), after a failure to read a (data > non-replicated) block from the disk, the file being accessed becomes > permanently locked,

Re: I/O errors block the entire filesystem

2013-05-11 Thread Alexandre Oliva
On Apr 4, 2013, Alexandre Oliva wrote: > I've been trying to figure out the btrfs I/O stack to try to understand > why, sometimes (but not always), after a failure to read a (data > non-replicated) block from the disk, the file being accessed becomes > permanently locked, and the filesystem, unm

I/O errors block the entire filesystem

2013-04-04 Thread Alexandre Oliva
I've been trying to figure out the btrfs I/O stack to try to understand why, sometimes (but not always), after a failure to read a (data non-replicated) block from the disk, the file being accessed becomes permanently locked, and the filesystem, unmountable. Sometimes (but not always) it's possibl