From mboxrd@z Thu Jan 1 00:00:00 1970 From: Neil Brown Subject: Re: mdadm create problem with existing bitmap file Date: Mon, 23 Aug 2010 12:15:27 +1000 Message-ID: <20100823121527.61ca1ca4@notabene> References: <4C6EB877.1050602@datagardens.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <4C6EB877.1050602@datagardens.com> Sender: linux-raid-owner@vger.kernel.org To: Juan Aristizabal Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On Fri, 20 Aug 2010 11:16:39 -0600 Juan Aristizabal wrote: > Hello, > > I am using mdadm 2.6.3 on Ubuntu 8.04.3 32 bits. Sometimes I hit this > error when I try to create a RAID1: > > mdadm --create --force --assume-clean /dev/md73 --level=1 > --bitmap=/root/bitmaps/md73bm.tmp --raid-devices=2 /dev/vg1/vol1 > --write-mostly /dev/sdj > > Continue creating array? mdadm: failed to open bitmap file > /root/bitmaps/md73bm.tmp: Text file busy > > The bitmap file exists, but lsof doesn't show that it is in use by any > other process. > > If I copy the bitmap file and try the create again everything works fine. > > Any idea what might be happening here? My best guess is that some other array is already using that bitmap file. cat /proc/mdstat should show you. There aren't many circumstances that can create Text file busy - either the file must be a binary that is being run, or a swap-file for which swapon has been run, or the file is a bitmap file for an md array (maybe there are some others, I cannot be bothered to grep just now). NeilBrown > > > Thanks, > > > Juan Aristizabal > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html