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| /freebsd-11-stable/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/ | ||
| H A D | spa.c | diff 253993 Tue Aug 06 12:57:51 MDT 2013 mav Block reporting of ZFS features for suspended pools. Before executing any subcommand, zpool tool fetches pools configuration from the kernel. Before features support was added, kernel was regenerating that configuration based on data always present in memory. Unfortunately, pool features list and activity counters are not such. They are stored in ZAP, that normally resides in ARC, but under heavy memory pressure may be swapped out. If pool is suspended at this point, there is no way to recover it back since any zpool command will stuck. This change has one predictable flaw: `zpool upgrade` always wish to upgrade suspended pools, but fortunately it can't do it due to the suspension. |
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