The thin reclamation can be an intensive operation that may be time consuming, depending on the size of the disk and the amount of space to be reclaimed. As with other long-running tasks, you can monitor the operation with the vxtask command.
To monitor thin reclamation
# vxdisk reclaim diskgroup| disk| enclosure
For example:
# vxdisk reclaim dg100
# vxtask monitor
TASKID PTID TYPE/STATE PCT PROGRESS 1258 - RECLAIM/R 17.28% 65792/33447328/5834752 RECLAIM vol4 dg100 1259 - RECLAIM/R 25.98% 0/20971520/5447680 RECLAIM vol2 dg100 1263 - RECLAIM/R 25.21% 0/20971520/5287936 RECLAIM vol3 dg100 1258 - RECLAIM/R 25.49% 0/20971520/3248128 RECLAIM vol4 dg100 1258 - RECLAIM/R 27.51% 0/20971520/3252224 RECLAIM vol4 dg100 1263 - RECLAIM/R 25.23% 0/20971520/5292032 RECLAIM vol3 dg100 1259 - RECLAIM/R 26.00% 0/20971520/5451776 RECLAIM vol2 dg100
# vxtask list
TASKID PTID TYPE/STATE PCT PROGRESS 1258 - RECLAIM/R 17.28% 65792/33447328/5834752 RECLAIM vol4 dg100 1259 - RECLAIM/R 25.98% 0/20971520/5447680 RECLAIM vol2 dg100 1263 - RECLAIM/R 25.21% 0/20971520/5287936 RECLAIM vol3 dg100
# vxtask monitor 1258
TASKID PTID TYPE/STATE PCT PROGRESS 1258 - RECLAIM/R 17.28% 65792/33447328/5834752 RECLAIM vol4 dg100 1258 - RECLAIM/R 32.99% 65792/33447328/11077632 RECLAIM vol4 dg100 1258 - RECLAIM/R 45.55% 65792/33447328/15271936 RECLAIM vol4 dg100 1258 - RECLAIM/R 50.00% 0/20971520/10485760 RECLAIM vol4 dg100 . . .
The vxdisk reclaim command runs in another session while you run the vxtask list command.
See the vxtask(1m) manual page.