单选题The data on datavg is inaccessible. Using "df" the user discovers that none of the datavg filesystems are mounted. Running "lsvg" shows only rootvg. Running "importvg -y" gives the following error: "056-056 volume cannot be varied on because pv is marked missing". Which of the following steps should be performed?（）ARun cfgmgr. BRun synclvodm. CLook in errorlog for hardware problems. DBoot into service mode and run fsck on filesystems.
单选题
The data on datavg is inaccessible. Using "df" the user discovers that none of the datavg filesystems are mounted. Running "lsvg" shows only rootvg. Running "importvg -y" gives the following error: "056-056 volume cannot be varied on because pv is marked missing". Which of the following steps should be performed?（）
A
Run cfgmgr.
B
Run synclvodm.
C
Look in errorlog for hardware problems.
D
Boot into service mode and run fsck on filesystems.
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