Date: Sat, 11 Jun 2016 21:52:40 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-doc@FreeBSD.org Subject: [Bug 210222] 19.4.7.2. -- Add warning about ZFS silently masking datasets with the same mountpoints when recursively sending/receiving the root dataset Message-ID: <bug-210222-9@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D210222 Bug ID: 210222 Summary: 19.4.7.2. -- Add warning about ZFS silently masking datasets with the same mountpoints when recursively sending/receiving the root dataset Product: Documentation Version: Latest Hardware: Any OS: Any Status: New Severity: Affects Some People Priority: --- Component: Documentation Assignee: freebsd-doc@FreeBSD.org Reporter: b.manas.88@gmail.com I was following the handbook in trying to create a backup of the whole filesystem of a system that I had installed & configured. I ran into an iss= ue when trying to send/receive the snapshot of the datasets. ** If a user takes a recursive snapshot of an entire pool, such as with test-system1# zfs snapshot -r zroot@TEST and then sends that to a second ZFS system, such as with test-system1# zfs send -vR zroot@TEST | ssh test-system2 zfs recv -Fdvu zroot/TEST/test-system1_zroot the resulting datasets on the receiving side will have mountpoints that are exactly the same as some of the datasets that already exist. ZFS does not w= arn about this and upon a reboot, important datasets will be masked. This requi= res booting into a livecd and manually changing the mountpoints so that they ar= e no duplicates. This has happened to me before and I think there should be at l= east a warning in the handbook so that users who are not familiar with ZFS are a= ware of this danger. I spoke to Allan Jude about this at BSDCan 2016 and he responded positively= to making this change. I am happy to submit a patch, I have attended 2 of the = Doc Sprints at BSDCan 2016 and I will be familiarizing myself with the process = of submitting a patch for documentation. --=20 You are receiving this mail because: You are the assignee for the bug.=
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