From: Wade Cline <clinew@linux.vnet.ibm.com>
To: Chris Samuel <chris@csamuel.org>
Cc: miaox@cn.fujitsu.com, bo.li.liu@oracle.com,
linux-btrfs@vger.kernel.org, cmm@linux.vnet.ibm.com
Subject: Re: [PATCH] [RFC v2] Btrfs: Subpagesize blocksize (WIP).
Date: Tue, 18 Dec 2012 15:19:13 -0800 [thread overview]
Message-ID: <50D0F9F1.6070209@linux.vnet.ibm.com> (raw)
In-Reply-To: <50D0F5E0.2010701@csamuel.org>
On 12/18/2012 03:01 PM, Chris Samuel wrote:
> On 19/12/12 09:26, Wade Cline wrote:
>
>> Yeah. Basically, if we create a btrfs filesystem with a 4k blocksize
>> then that filesystem is incompatible with architectures such as PowerPC
>> and MIPS which have a page size larger than 4k.
> What happens currently? Does the btrfs code detect the mismatch and
> refuse to mount, or does it all go horribly wrong?
>
> cheers,
> Chris
I recall hacking the mkfs.btrfs tool, testing it, and finding that the
filesystem wouldn't mount. I haven't created a non-hacked filesystem
on x86 and ported it to PPC verbatim yet, but the same should happen
there; it shouldn't crash the kernel.
-Wade
next prev parent reply other threads:[~2012-12-18 23:19 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-18 7:13 [PATCH] [RFC v2] Btrfs: Subpagesize blocksize (WIP) clinew
2012-12-18 7:30 ` Liu Bo
2012-12-18 8:49 ` Miao Xie
2012-12-18 22:26 ` Wade Cline
2012-12-18 23:01 ` Chris Samuel
2012-12-18 23:19 ` Wade Cline [this message]
2012-12-19 2:02 ` Liu Bo
2012-12-19 2:29 ` Wade Cline
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