From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Liu Subject: Re: mount a multi-device filesystem using a loopback device Date: Wed, 07 Sep 2011 14:44:28 +0800 Message-ID: <4E6712CC.3040404@oracle.com> References: <4E66F090.4030507@oracle.com> Reply-To: jeff.liu@oracle.com Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Cc: linux-btrfs@vger.kernel.org To: cwillu Return-path: In-Reply-To: List-ID: On 09/07/2011 12:37 PM, cwillu wrote: >> 1. Create and format two images, the 1st in 400Mbytes, and 2nd in 286Mbytes. >> root@pibroch:/btrfs-progs# ls -lh /usr/src/linux-3.0/img* >> -rw-r--r-- 1 jeff jeff 400M 2011-09-07 12:00 /usr/src/linux-3.0/img0 >> -rw-r--r-- 1 jeff jeff 286M 2011-09-07 12:00 /usr/src/linux-3.0/img1 > Very small btrfs filesystem require special handling, mixed block > groups in particular, which I believe also requires an updated mkfs > from the integration repo. Thanks for your response, however, even if I enlarged the image size to 2G, still got no luck. Per Zefan's comments, run 'btrfs device scan' fixed this issue. -Jeff > -- > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html