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At least on FreeBSD there are no legal way to access media or get its size without opening device/provider first. Postponing this caching allows to skip several disk seeks per ZVOL/snapshot during import. For HDD pool with 1 ZVOL in dev mode with 1000 snapshots this reduces pool import time from 40 to 10 seconds. MFC after: 2 weeks Sponsored by: iXsystems, Inc. |
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| boot/zfs | ||
| compat/opensolaris | ||
| contrib/opensolaris | ||
| dev | ||