Hi, Our zfs nfs build server running snv_73 (pool created back before zfs integrated to ON) paniced I guess from zfs the first time and now panics on attempted boot every time as below. Is this a known issue and, more importantly (2TB of data in the pool), any suggestions on how to recover (other than from backup).
panic[cpu0]/thread=ffffff003cc8dc80: zfs: allocating allocated segment(offset=24872013824 size=4096) ffffff003cc8d3c0 genunix:vcmn_err+28 ()ck to the main menu. ffffff003cc8d4b0 zfs:zfs_panic_recover+b6 () ffffff003cc8d540 zfs:space_map_add+db () ffffff003cc8d5e0 zfs:space_map_load+1f4 () ffffff003cc8d620 zfs:metaslab_activate+66 () ffffff003cc8d6e0 zfs:metaslab_group_alloc+24e () ffffff003cc8d7b0 zfs:metaslab_alloc_dva+192 () ffffff003cc8d850 zfs:metaslab_alloc+82 () ffffff003cc8d8a0 zfs:zio_dva_allocate+68 () ffffff003cc8d8c0 zfs:zio_next_stage+b3 () ffffff003cc8d8f0 zfs:zio_checksum_generate+6e () ffffff003cc8d910 zfs:zio_next_stage+b3 () ffffff003cc8d980 zfs:zio_write_compress+239 () ffffff003cc8d9a0 zfs:zio_next_stage+b3 () ffffff003cc8d9f0 zfs:zio_wait_for_children+5d () ffffff003cc8da10 zfs:zio_wait_children_ready+20 () ffffff003cc8da30 zfs:zio_next_stage_async+bb () ffffff003cc8da50 zfs:zio_nowait+11 () ffffff003cc8dad0 zfs:dmu_objset_sync+172 () ffffff003cc8db40 zfs:dsl_pool_sync+199 () ffffff003cc8dbd0 zfs:spa_sync+1c5 () ffffff003cc8dc60 zfs:txg_sync_thread+19a () ffffff003cc8dc70 unix:thread_start+8 () In case it matters this is an X4600 M2. There is about 1.5TB in use out of a 2TB pool. The IO devices are nothing exciting but adequate for building - 2 x T3b. The pool was created under sparc on the old nfs server. Thanks Gavin
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