Re: [PATCH] Btrfs: fix a deadlock on chunk mutex

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On Tue, Jan 29, 2013 at 08:50:34AM -0500, Josef Bacik wrote:
> On Tue, Jan 29, 2013 at 08:47:30AM -0500, Josef Bacik wrote:
> > 251      [not run] FSTRIM is not supported
> > 
> > Are you sure its 251?  Thanks,
> 
> Sorry it's early, I need a device that does trim.  /me waits for his fusion card
> to get back from the shop,

You can use scsi_debug device with

parm:           lbpu:enable LBP, support UNMAP command (def=0) (int)

david
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