From b93b14dc756861d543249f3d04b80809055fdd61 Mon Sep 17 00:00:00 2001 From: Toomas Soome Date: Fri, 26 Jun 2020 21:21:35 +0000 Subject: [PATCH] loader: can not read zfs pool with slog removed The vdev_init() does check for "known" vdev types, the [log] device removal will create "hole" device, but vdev_init() does not allow it. Obtained from: illumos MFC after: 1 week --- stand/libsa/zfs/zfsimpl.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/stand/libsa/zfs/zfsimpl.c b/stand/libsa/zfs/zfsimpl.c index ad746148e38..1e11ba9daf6 100644 --- a/stand/libsa/zfs/zfsimpl.c +++ b/stand/libsa/zfs/zfsimpl.c @@ -765,6 +765,13 @@ vdev_disk_read(vdev_t *vdev, const blkptr_t *bp, void *buf, offset + VDEV_LABEL_START_SIZE, bytes)); } +static int +vdev_missing_read(vdev_t *vdev __unused, const blkptr_t *bp __unused, + void *buf __unused, off_t offset __unused, size_t bytes __unused) +{ + + return (ENOTSUP); +} static int vdev_mirror_read(vdev_t *vdev, const blkptr_t *bp, void *buf, @@ -904,9 +911,10 @@ vdev_init(uint64_t guid, const nvlist_t *nvlist, vdev_t **vdevp) #endif memcmp(type, VDEV_TYPE_RAIDZ, len) != 0 && memcmp(type, VDEV_TYPE_INDIRECT, len) != 0 && - memcmp(type, VDEV_TYPE_REPLACING, len) != 0) { + memcmp(type, VDEV_TYPE_REPLACING, len) != 0 && + memcmp(type, VDEV_TYPE_HOLE, len) != 0) { printf("ZFS: can only boot from disk, mirror, raidz1, " - "raidz2 and raidz3 vdevs\n"); + "raidz2 and raidz3 vdevs, got: %.*s\n", len, type); return (EIO); } @@ -937,6 +945,8 @@ vdev_init(uint64_t guid, const nvlist_t *nvlist, vdev_t **vdevp) DATA_TYPE_UINT64, NULL, &vic->vic_prev_indirect_vdev, NULL); } + } else if (memcmp(type, VDEV_TYPE_HOLE, len) == 0) { + vdev = vdev_create(guid, vdev_missing_read); } else { vdev = vdev_create(guid, vdev_disk_read); } -- 2.45.0