Date: Thu, 21 Jun 2018 10:36:05 +0900 From: KIRIYAMA Kazuhiko <kiri@kx.openedu.org> To: FreeBSD Current <freebsd-current@freebsd.org> Cc: kiri@kx.openedu.org Subject: ZFS: I/O error - blocks larger than 16777216 are not supported Message-ID: <201806210136.w5L1a5Nv074194@kx.openedu.org>
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Hi all,
I've been reported ZFS boot disable problem [1], and found
that this issue occers form RAID configuration [2]. So I
rebuit with RAID5 and re-installed 12.0-CURRENT
(r333982). But failed to boot with:
ZFS: i/o error - all block copies unavailable
ZFS: can't read MOS of pool zroot
gptzfsboot: failed to mount default pool zroot
FreeBSD/x86 boot
ZFS: I/O error - blocks larger than 16777216 are not supported
ZFS: can't find dataset u
Default: zroot/<0x0>:
In this case, the reason is "blocks larger than 16777216 are
not supported" and I guess this means datasets that have
recordsize greater than 8GB is NOT supported by the
FreeBSD boot loader(zpool-features(7)). Is that true ?
My zpool featues are as follows:
# kldload zfs
# zpool import
pool: zroot
id: 13407092850382881815
state: ONLINE
status: The pool was last accessed by another system.
action: The pool can be imported using its name or numeric identifier and
the '-f' flag.
see: http://illumos.org/msg/ZFS-8000-EY
config:
zroot ONLINE
mfid0p3 ONLINE
# zpool import -fR /mnt zroot
# zpool list
NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT
zroot 19.9T 129G 19.7T - 0% 0% 1.00x ONLINE /mnt
# zpool get all zroot
NAME PROPERTY VALUE SOURCE
zroot size 19.9T -
zroot capacity 0% -
zroot altroot /mnt local
zroot health ONLINE -
zroot guid 13407092850382881815 default
zroot version - default
zroot bootfs zroot/ROOT/default local
zroot delegation on default
zroot autoreplace off default
zroot cachefile none local
zroot failmode wait default
zroot listsnapshots off default
zroot autoexpand off default
zroot dedupditto 0 default
zroot dedupratio 1.00x -
zroot free 19.7T -
zroot allocated 129G -
zroot readonly off -
zroot comment - default
zroot expandsize - -
zroot freeing 0 default
zroot fragmentation 0% -
zroot leaked 0 default
zroot feature@async_destroy enabled local
zroot feature@empty_bpobj active local
zroot feature@lz4_compress active local
zroot feature@multi_vdev_crash_dump enabled local
zroot feature@spacemap_histogram active local
zroot feature@enabled_txg active local
zroot feature@hole_birth active local
zroot feature@extensible_dataset enabled local
zroot feature@embedded_data active local
zroot feature@bookmarks enabled local
zroot feature@filesystem_limits enabled local
zroot feature@large_blocks enabled local
zroot feature@sha512 enabled local
zroot feature@skein enabled local
zroot unsupported@com.delphix:device_removal inactive local
zroot unsupported@com.delphix:obsolete_counts inactive local
zroot unsupported@com.delphix:zpool_checkpoint inactive local
#
Regards
[1] https://lists.freebsd.org/pipermail/freebsd-current/2018-March/068886.html
[2] https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=151910
---
KIRIYAMA Kazuhiko
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