Re: [PATCH 6/9] device-mapper snapshot: barriers not supported

Alasdair G Kergon <[email protected]> wrote:
>
> The snapshot and origin targets are incapable of handling barriers and 
>  need to indicate this.
> 
> ...
>   
>  +	if (unlikely(bio_barrier(bio)))
>  +		return -EOPNOTSUPP;
>  +

And what was happening if people _were_ sending such BIOs down?  Did it all
appear to work correctly?  If so, will this change cause
currently-apparently-working setups to stop working?
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

---

• Follow-Ups:
  • Re: [PATCH 6/9] device-mapper snapshot: barriers not supported
    • From: Alasdair G Kergon <[email protected]>
  • Re: [PATCH 6/9] device-mapper snapshot: barriers not supported
    • From: Lars Marowsky-Bree <[email protected]>

• References:
  • [PATCH 6/9] device-mapper snapshot: barriers not supported
    • From: Alasdair G Kergon <[email protected]>

• Prev by Date: Re: [Ext2-devel] [PATCH] ext3: Extends blocksize up to pagesize
• Next by Date: Re: [Ext2-devel] Re: [PATCH] ext3: Extends blocksize up to pagesize
• Previous by thread: [PATCH 6/9] device-mapper snapshot: barriers not supported
• Next by thread: Re: [PATCH 6/9] device-mapper snapshot: barriers not supported
• Index(es):
  • Date
  • Thread

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]