zfs receive fails to delete obsolete zvols

[Rudd-O]

When doing a zfs receive, zvols cannot be deleted:

Recursively replicating karen/sekrit/f-storefront to backup/karen.dragonfear/karen/sekrit/f-storefront
Base snapshot available in destination: <Snapshot: karen/sekrit/f-storefront@zfs-auto-snap_daily-2013-07-18-0300>
Target snapshot available in source: <Snapshot: karen/sekrit/f-storefront@zfs-auto-snap_hourly-2013-07-18-0600>
send from @zfs-auto-snap_daily-2013-07-18-0300 to karen/sekrit/f-storefront@zfs-auto-snap_hourly-2013-07-18-0600 estimated size is 0
total estimated size is 0
TIME SENT SNAPSHOT
attempting destroy backup/karen.dragonfear/karen/sekrit/f-storefront@zfs-auto-snap_hourly-2013-06-18-0600
failed - trying rename backup/karen.dragonfear/karen/sekrit/f-storefront@zfs-auto-snap_hourly-2013-06-18-0600 to backup/karen.dragonfear/karen/sekrit/f-storefront@recv-1285-1
failed (22) - will try again on next pass
attempting destroy backup/karen.dragonfear/karen/sekrit/f-storefront@zfs-auto-snap_hourly-2013-06-18-1200
failed - trying rename backup/karen.dragonfear/karen/sekrit/f-storefront@zfs-auto-snap_hourly-2013-06-18-1200 to backup/karen.dragonfear/karen/sekrit/f-storefront@recv-1285-2
failed (22) - will try again on next pass
attempting destroy backup/karen.dragonfear/karen/sekrit/f-storefront@zfs-auto-snap_hourly-2013-06-19-0000
failed - trying rename backup/karen.dragonfear/karen/sekrit/f-storefront@zfs-auto-snap_hourly-2013-06-19-0000 to backup/karen.dragonfear/karen/sekrit/f-storefront@recv-1285-3
failed (22) - will try again on next pass
attempting destroy backup/karen.dragonfear/karen/sekrit/f-storefront@zfs-auto-snap_hourly-2013-06-18-1800
failed - trying rename backup/karen.dragonfear/karen/sekrit/f-storefront@zfs-auto-snap_hourly-2013-06-18-1800 to backup/karen.dragonfear/karen/sekrit/f-storefront@recv-1285-4
failed (22) - will try again on next pass
receiving incremental stream of karen/sekrit/f-storefront@zfs-auto-snap_hourly-2013-07-18-0600 into backup/karen.dragonfear/karen/sekrit/f-storefront@zfs-auto-snap_hourly-2013-07-18-0600
received 312B stream in 1 seconds (312B/sec)
attempting destroy backup/karen.dragonfear/karen/sekrit/f-storefront@zfs-auto-snap_hourly-2013-06-18-0600
failed - trying rename backup/karen.dragonfear/karen/sekrit/f-storefront@zfs-auto-snap_hourly-2013-06-18-0600 to backup/karen.dragonfear/karen/sekrit/f-storefront@recv-1285-5
failed (22) - will try again on next pass
attempting destroy backup/karen.dragonfear/karen/sekrit/f-storefront@zfs-auto-snap_hourly-2013-06-18-1200
failed - trying rename backup/karen.dragonfear/karen/sekrit/f-storefront@zfs-auto-snap_hourly-2013-06-18-1200 to backup/karen.dragonfear/karen/sekrit/f-storefront@recv-1285-6
failed (22) - will try again on next pass
attempting destroy backup/karen.dragonfear/karen/sekrit/f-storefront@zfs-auto-snap_hourly-2013-06-19-0000
failed - trying rename backup/karen.dragonfear/karen/sekrit/f-storefront@zfs-auto-snap_hourly-2013-06-19-0000 to backup/karen.dragonfear/karen/sekrit/f-storefront@recv-1285-7
failed (22) - will try again on next pass
attempting destroy backup/karen.dragonfear/karen/sekrit/f-storefront@zfs-auto-snap_hourly-2013-06-18-1800
failed - trying rename backup/karen.dragonfear/karen/sekrit/f-storefront@zfs-auto-snap_hourly-2013-06-18-1800 to backup/karen.dragonfear/karen/sekrit/f-storefront@recv-1285-8

this happens even with zvol_inhibit_dev=1 so it isn't a problem with udev helpers or whatnot.

kernel 3.7.9-201.fc18.x86_64

zfs version 36c0b62

what gives?

[behlendorf]

This should be resolved by #2729.