Re: kern/57081: ZFS pool rolled back two years, all data lost since.

[Simon Burge <simonb%NetBSD.org@localhost>]

The following reply was made to PR kern/57081; it has been noted by GNATS.

From: Simon Burge <simonb%NetBSD.org@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
    netbsd-bugs%netbsd.org@localhost, roy%marples.name@localhost
Subject: Re: kern/57081: ZFS pool rolled back two years, all data lost since.
Date: Fri, 11 Nov 2022 21:12:01 +1100

 Taylor R Campbell wrote:
 
 > From: Taylor R Campbell <riastradh%NetBSD.org@localhost>
 > To: roy%marples.name@localhost
 > Cc: gnats-bugs%NetBSD.org@localhost
 > Subject: Re: kern/57081: ZFS pool rolled back two years, all data lost s=
 ince.
 > Date: Fri, 11 Nov 2022 10:00:01 +0000
 >
 >  Yikes, seems bad!
 
 Yeah :/
 
 >  4. Can you share output from `zdb -e -l <vdev>' and from `zdb -e -h
 >     <pool>'?
 
 Looks like the -u option when used with the -l option will display
 the contents of the uberblocks (like ffs superblocks).  There
 should be four of these per device.
 
 Cheers,
 Simon.