登录到XenServer. 修改虚拟机磁盘大小修改storage 磁盘大小 启动虚拟机 修改分区大小Hex code (type L to list codes): 8eChanged system type of partition 2 to 8e (Linux LVM)Command (m for help): pDisk /dev/xvda: 42.9 GB, 42949672960 bytes255 heads, 63 sectors/track, 5221 cylindersUnits
一.获取磁盘大小(给入的是文件夹绝对路径):check_disk_available(QString path) { struct statfs diskinfo; unsigned long long size; unsigned long long blocksize; statfs(path.toUtf8().data(),&diskinfo); blocksize=diskinfo.f_bsize; size=diskinfo.f_bavail*blocksize; size=size&g
1.修改字段大小 当表中已经存在数据,就不能直接修改某字段大小,需要新建一个字段来过渡 ALTER TABLE TABLE RENAME COLUMN GRP TO FUND_GRP_1; ); )); ALTER TABLE TABLE DROP COLUMN FUND_GRP_1; 2.检查数据库的invalid object. 字段修改之后往往会导致数据库中产生无效对象,需要进行检查 SELECT owner, object_name, object_type, status FROM
#查看每个数据库所占磁盘大小 SELECT TABLE_SCHEMA AS "库名", , ) AS "表所占空间(MB)", , ) AS "索引所占空间(MB)", ,) AS "空间累计(MB)" FROM information_schema.`TABLES` GROUP BY `TABLE_SCHEMA`; #查看某个数据库各表所占磁盘大小 SELECT TABLE_NAME, , ) AS "DATA_