Hi ZFS guys,
when playing with one of recent version of OpenSolaris GUI installer,
I have tried to restart it after previous failure.
However, the installer failed when trying to destroy previously created
ZFS root pool. It was discovered that this is due to the fact that dump
ZFS volume could not be released and thus subsequent 'zpool destroy' command
failed (as expected):
# zpool destroy -f rpool
cannot destroy 'rpool': pool is busy
# zfs list rpool/dump
NAME USED AVAIL REFER MOUNTPOINT
rpool/dump 750M 9.93G 750M -
# dumpadm
Dump content: kernel pages
Dump device: /dev/zvol/dsk/rpool/dump (dedicated)
Savecore directory: /var/crash/opensolaris
Savecore enabled: no
Save compressed: on
There was a discussion which happened on zfs-discuss mailing list
some time ago about how dump ZVOL could be release and the recommended
approach was to try to move it to swap ZVOL - the attempt failed,
but dump ZVOL was released. That no longer seems to work:
# swap -l
swapfile dev swaplo blocks free
/dev/zvol/dsk/rpool/swap 8,1 8 2287608 2287608
# dumpadm -d swap
dumpadm: no swap devices could be configured as the dump device
# dumpadm
Dump content: kernel pages
Dump device: /dev/zvol/dsk/rpool/dump (dedicated)
Savecore directory: /var/crash/opensolaris
Savecore enabled: no
Save compressed: on
Bug 13180 was filed against OpenSolaris installer to track this issue.
Could I please ask somebody from ZFS team to help install folks understand
what changed and how the installer has to be modified, so that it can
destroy ZFS root pool containing dump on ZVOL ?
Thank you very much,
Jan
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