> On Mar 21, 2016, at 2:03 PM, Dan McDonald <[email protected]> wrote:
>
> I would appreciate any insight into this corruption. I'll be continuing to
> dig on my own.
It appears the zap_phys_t is all zeroes.
Using the zdb panic, I found this:
# mdb core.zdb
Loading modules: [ libumem.so.1 libc.so.1 libzpool.so.1 libavl.so.1
libcmdutils.so.1 libnvpair.so.1 libtopo.so.1 ld.so.1 ]
> $c
libc.so.1`_lwp_kill+0xa()
libc.so.1`_assfail+0x168(ffffdf7fffdfea20, ffffdf7ffda347b0, 241)
libc.so.1`assfail3+0xe6(ffffdf7ffda34e88, 0, ffffdf7ffda39f6c, 2f52ab2ab,
ffffdf7ffda347b0, 241)
libzpool.so.1`zap_deref_leaf+0x7b(3dceb500, 0, 0, 0, ffffdf7fffdff200)
libzpool.so.1`fzap_cursor_retrieve+0x140(3dceb500, ffffdf7fffdff1f0,
ffffdf7fffdff050)
libzpool.so.1`zap_cursor_retrieve+0x67(ffffdf7fffdff1f0, ffffdf7fffdff050)
dump_zpldir+0xc3(3904d300, e107ad5, 0, 0)
dump_object+0x31f(3904d300, e107ad5, 4, ffffdf7fffdff8bc)
dump_dir+0x1e8(3904d300)
main+0x4b9(4, ffffdf7fffdff9e8)
_start+0x6c()
> 3dceb500::print -ta zap_t
3dceb500 zap_t {
3dceb500 dmu_buf_user_t zap_dbu = {
3dceb500 taskq_ent_t dbu_tqent = {
3dceb500 struct taskq_ent *tqent_next = 0
3dceb508 struct taskq_ent *tqent_prev = 0
3dceb510 task_func_t *tqent_func = 0
3dceb518 void *tqent_arg = 0
3dceb520 uintptr_t tqent_flags = 0
}
3dceb528 dmu_buf_evict_func_t *dbu_evict_func = libzpool.so.1`zap_evict
3dceb530 dmu_buf_t **dbu_clear_on_evict_dbufp = 0x3dceb548
}
3dceb538 objset_t *zap_objset = 0x3904d300
3dceb540 uint64_t zap_object = 0xe107ad5
3dceb548 struct dmu_buf *zap_dbuf = 0x3de46460
3dceb550 krwlock_t zap_rwlock = {
3dceb550 void *rw_owner = 1
3dceb558 boolean_t initialized = 0x1 (B_TRUE)
3dceb560 rwlock_t rw_lock = {
3dceb560 int32_t readers = 0x1
3dceb564 uint16_t type = 0
3dceb566 uint16_t magic = 0x5257
3dceb568 mutex_t mutex = {
<SNIP!>
> 0x3de46460::print "struct dmu_buf"
{
db_object = 0xe107ad5
db_offset = 0
db_size = 0x200
db_data = 0x3de6d400
}
> 0x3de6d400::print zap_phys_t
{
zap_block_type = 0
zap_magic = 0
zap_ptrtbl = {
zt_blk = 0
zt_numblks = 0
zt_shift = 0
zt_nextblk = 0
zt_blks_copied = 0
}
zap_freeblk = 0
zap_num_leafs = 0
zap_num_entries = 0
zap_salt = 0
zap_normflags = 0
zap_flags = 0
}
>
Is there any way I can correct this? Or otherwise help my customer against
this clear on-disk corruption?
Dan
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