Date: Fri, 31 May 2019 11:59:58 +0300 From: Ruslan Makhmatkhanov <rm@FreeBSD.org> To: freebsd-fs@freebsd.org Subject: [ZFS] Empty shapshot diffs Message-ID: <5199c23e-a1bb-6019-4ff6-505db370604e@FreeBSD.org>
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Hello,
there is standard dataset with a bunch of snapshots:
root@sys:~ # zfs list -rt snapshot
storage03/disks/f0878a5b0a3546e99fa33ba3f0b5476c
NAME USED
AVAIL REFER MOUNTPOINT
storage03/disks/f0878a5b0a3546e99fa33ba3f0b5476c@20190423000010 37,6M
- 43,7G -
storage03/disks/f0878a5b0a3546e99fa33ba3f0b5476c@20190424000707 40,6M
- 43,7G -
storage03/disks/f0878a5b0a3546e99fa33ba3f0b5476c@20190425001008 39,9M
- 43,7G -
storage03/disks/f0878a5b0a3546e99fa33ba3f0b5476c@20190426001139 212M
- 43,7G -
storage03/disks/f0878a5b0a3546e99fa33ba3f0b5476c@20190427001036 69,8M
- 43,7G -
storage03/disks/f0878a5b0a3546e99fa33ba3f0b5476c@20190428000245 40,4M
- 43,7G -
storage03/disks/f0878a5b0a3546e99fa33ba3f0b5476c@20190429000715 64,0M
- 43,6G -
storage03/disks/f0878a5b0a3546e99fa33ba3f0b5476c@20190430001449 38,2M
- 43,7G -
storage03/disks/f0878a5b0a3546e99fa33ba3f0b5476c@20190501000943 32,2M
- 43,7G -
storage03/disks/f0878a5b0a3546e99fa33ba3f0b5476c@20190502001414 34,7M
- 43,7G -
But diffing of these snapshots shows nothing:
root@sys:~ # zfs diff
storage03/disks/f0878a5b0a3546e99fa33ba3f0b5476c@20190423000010
storage03/disks/f0878a5b0a3546e99fa33ba3f0b5476c@20190428000245
root@sys:~ #
More old snapshots of this dataset can be diffed successfully:
root@sys:~ # zfs diff
storage03/disks/f0878a5b0a3546e99fa33ba3f0b5476c@20181130000342
storage03/disks/f0878a5b0a3546e99fa33ba3f0b5476c@20190507000343
M /storage03/disks/f0878a5b0a3546e99fa33ba3f0b5476c/
- /storage03/disks/f0878a5b0a3546e99fa33ba3f0b5476c/disk
+ /storage03/disks/f0878a5b0a3546e99fa33ba3f0b5476c/disk
Any suggestions what can it be and how to debug/fix that?
FreeBSD 11.0-RELEASE-p1 #0 r306420: Thu Sep 29 01:43:23 UTC 2016
root@releng2.nyi.freebsd.org:/usr/obj/usr/src/sys/GENERIC amd64
--
Regards,
Ruslan
T.O.S. Of Reality
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