HI ! Well as per my actual post, i created a zfs file as part of Sun cluster HAStoragePlus, and then disconned the FC cable, since there was no active IO hence the failure of disk was not detected, then i touched a file in the zfs filesystem, and it went fine, only after that when i did sync then the node panicked and zfs filesystem is failed over to other node. On the othernode the file i touched is not there in the same zfs file system hence i am saying that data is lost. I am planning to deploy zfs in a production NFS environment with above 2TB of Data where users are constantly updating file. Hence my concerns about data integrity. Please explain.
thaks Ayaz Anjum Darren Dunham <[EMAIL PROTECTED]> Sent by: [EMAIL PROTECTED] 03/12/2007 05:45 AM To zfs-discuss@opensolaris.org cc Subject Re: Re[2]: [zfs-discuss] writes lost with zfs ! > I have some concerns here, from my experience in the past, touching a > file ( doing some IO ) will cause the ufs filesystem to failover, unlike > zfs where it did not ! Why the behaviour of zfs different than ufs ? UFS always does synchronous metadata updates. So a 'touch' that creates a file is going to require a metadata write. ZFS writes may not necessarily hit the disk until a transaction group flush. > is not this compromising data integrity ? It should not. Is there a scenario that you are worried about? -- Darren Dunham [EMAIL PROTECTED] Senior Technical Consultant TAOS http://www.taos.com/ Got some Dr Pepper? San Francisco, CA bay area < This line left intentionally blank to confuse you. > _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss -------------------------------------------------------------------------------------------------- Confidentiality Notice : This e-mail and any attachments are confidential to the addressee and may also be privileged. If you are not the addressee of this e-mail, you may not copy, forward, disclose or otherwise use it in any way whatsoever. If you have received this e-mail by mistake, please e-mail the sender by replying to this message, and delete the original and any print out thereof.
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