Hi, I am using ZFS filesystem and created a block device(ZVOL) and mounted and formatted that as xfs filesystem. I have one application running which is using this xfs file system. Now, when I am creating a ZFS snapshot and ZFS clone and trying to mount the clone filesystem, I am getting duplicate UUID error and I am not able to moiunt it. After searching I found there is xfs_freeze binary available to freeze the file system. xfs_freeze is intended to be used with volume managers and hardware RAID devices that support the creation of snapshots. As zfs file system is volume manager also so this looks good solution. So I tried the below steps:- 1. xfs_freeze -f <mountpath> 2. take the zfs snapshot 3. create the clone from the snapshot 4. xfs_freeze -u <mountpath> 5. generate new uuid with "xfs_admin -U generate <device>" This is not working. xfs_admin command itself is throwing the error, it is returning this error : ERROR: The filesystem has valuable metadata changes in a log which needs to be replayed. Mount the filesystem to replay the log, and unmount it before re-running xfs_admin. If you are unable to mount the filesystem, then use the xfs_repair -L option to destroy the log and attempt a repair. Note that destroying the log may cause corruption -- please attempt a mount of the filesystem before doing this. But this error does not make any sense since as per man page (https://linux.die.net/man/8/xfs_freeze) All dirty data, metadata, and log information are written to disk, then why I am getting this error. Am I missing something? Regards, Pawan.
