Date: Tue, 07 Dec 2010 11:15:55 +0000 From: a.smith@ukgrid.net To: freebsd-fs@freebsd.org Subject: Re: spurious ZFS "dataset does not exist" errors Message-ID: <20101207111555.17494gq2v9f0sias@webmail2.ukgrid.net> In-Reply-To: <20101202114522.16601wx7crv5zhz4@webmail2.ukgrid.net> References: <20101202114522.16601wx7crv5zhz4@webmail2.ukgrid.net>
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Hi, I have now repeated this several times and continue to receive these weird errors. To confirm my steps to produce this, I am simply doing: zpool create nas1bkp raidz ada4p1 ada5p1 ada6p1 ada7p1 zfs send nas1/iscsi-cctv@another | zfs receive nas1bkp/iscsi-cctv The send takes over 12 hours as the volume size is nearly 3TB. I therefore used the disown command to allow the process to complete while not connected to the server. I tested this also using the nohup command with the same result. I also tested using a small test volume of just 100M and I don't get the same errors. So its only occuring with very large send/receive operations. If no one has any ideas, or any other tests I might do then I guess I'm just gona have to ignore these as the pool seems fine aparte from these... :S thanks Andy. Quoting a.smith@ukgrid.net: > Hi, > > I have been setting up a new ZFS pool to which I am replicate via > ZFS send/receive a (raw) volume from another pool. After creating > the duplicate volume in the new pool and having tested that it works > (it does) I exported the ZFS pool and it gives me the following > errors: > > # zpool export nas1bkp > cannot open 'nas1bkp/iscsi-cctvp3': dataset does not exist > cannot open 'nas1bkp/iscsi-cctvp2': dataset does not exist > cannot open 'nas1bkp/iscsi-cctvp1': dataset does not exist > > Its quite right, those datasets don't exist. But why is it even > trying to touch something that doesn't and has never existed. > Devices that actually exist are shown here: > > # zfs list > NAME USED AVAIL REFER MOUNTPOINT > nas1 3.19T 2.15T 648M /nas1 > nas1/cctv 2.53M 2.15T 2.53M /nas1/cctv > nas1/iscsi-cctv 3.19T 2.65T 2.65T - > nas1/zfssend 28.4K 50.0G 28.4K /nas1/zfssend > nas1bkp 3.19T 2.15T 28.4K /nas1bkp > nas1bkp/iscsi-cctv 3.19T 2.65T 2.65T - > nas1bkp/zfsrecv 26.9K 50.0G 26.9K /nas1bkp/zfsrecv > > > Anyone any idea whats going on? Spurious errors make me nervous! > > thanks Andy. > > > >
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