On 21/10/2015 14:25, Andriy Gapon wrote:
On 21/10/2015 16:08, Andriy Gapon wrote:
It seems that zfs receive -F -u would mount a received filesystem after
receiving a full stream if a destination filesystem already existed (and, thus,
got destroyed and re-created) and was mounted.
Is this a bug?
Or is this behavior actually preferable and only needs to be documented? [*]
[*] As it is now, the interaction of -F and receiving a full stream is not
documented at all.
How to reproduce:
$ zfs create rpool/sandbox
$ zfs create rpool/sandbox/from
$ zfs create rpool/sandbox/to
$ zfs snap rpool/sandbox/from@snap
$ zfs send rpool/sandbox/from@snap | zfs recv -v -F -u rpool/sandbox/to
receiving full stream of rpool/sandbox/from@snap into rpool/sandbox/to@snap
received 41.7KB stream in 1 seconds (41.7KB/sec)
$ zfs get mounted rpool/sandbox/to
NAME PROPERTY VALUE SOURCE
rpool/tmp/sandbox/to mounted yes -
This behavior can be more problematic if the mountpoint property changes either
because it had a non-inherited value or the stream contains properties because
it has been generated with either -R or -p.
Ahh we've had this but never had chance to isolate why as it seemed
random so thanks for identifying it.
IMO this is a bug and quite a serious one for the reasons you point out.
We've lost access to machines due to this :(
Regards
Steve
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