黑裙 raid1 如何扩容

用的 vm 弄得虚拟机 装的黑裙，当初装的时候，新建了两个虚拟硬盘 150G, 组了个 raid1, 但是现在发现磁盘有点不够，给两个硬盘都扩容到 500G , Nas 里看到的存储池两个硬盘确实是 500G 但是可用还是 150G，

用网上说的物理硬盘的形式，插拔形式同步替换了好像也不行。

# mdadm -D /dev/md2 /dev/md2: Version : 1.2 Creation Time : Thu Dec 20 10:40:21 2018 Raid Level : raid1 Array Size : 152464384 (145.40 GiB 156.12 GB) Used Dev Size : 152464384 (145.40 GiB 156.12 GB) Raid Devices : 2 Total Devices : 2 Persistence : Superblock is persistent Update Time : Fri Oct 11 22:24:17 2019 State : clean Active Devices : 2 Working Devices : 2 Failed Devices : 0 Spare Devices : 0 Name : Kerwin-NAS:2 (local to host Kerwin-NAS) UUID : b3222639:4a6f6d7f:9bcf4491:c47d736f Events : 4909 Number Major Minor RaidDevice State 2 8 51 0 active sync /dev/sdd3 3 8 67 1 active sync /dev/sde3 fdisk -l Disk /dev/synoboot: 50 MiB, 52428800 bytes, 102400 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: gpt Disk identifier: B3CAAA25-3CA1-48FA-A5B6-105ADDE4793F Device Start End Sectors Size Type /dev/synoboot1 2048 32767 30720 15M EFI System /dev/synoboot2 32768 94207 61440 30M Linux filesystem /dev/synoboot3 94208 102366 8159 4M BIOS boot Disk /dev/sdb: 10 GiB, 10737418240 bytes, 20971520 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: dos Disk identifier: 0xb5be3cf2 Device Boot Start End Sectors Size Id Type /dev/sdb1 2048 4982527 4980480 2.4G fd Linux raid autodetect /dev/sdb2 4982528 9176831 4194304 2G fd Linux raid autodetect Disk /dev/sda: 500 GiB, 536870912000 bytes, 1048576000 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: dos Disk identifier: 0x9978bd16 Device Boot Start End Sectors Size Id Type /dev/sda1 2048 4982527 4980480 2.4G fd Linux raid autodetect /dev/sda2 4982528 9176831 4194304 2G fd Linux raid autodetect /dev/sda3 9437184 314367999 304930816 145.4G fd Linux raid autodetect Disk /dev/sdc: 500 GiB, 536870912000 bytes, 1048576000 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: dos Disk identifier: 0xd6ac5a88 Device Boot Start End Sectors Size Id Type /dev/sdc1 2048 4982527 4980480 2.4G fd Linux raid autodetect /dev/sdc2 4982528 9176831 4194304 2G fd Linux raid autodetect /dev/sdc3 9437184 314367999 304930816 145.4G fd Linux raid autodetect Disk /dev/sdd: 500 GiB, 536870912000 bytes, 1048576000 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: dos Disk identifier: 0xe7a70274 Device Boot Start End Sectors Size Id Type /dev/sdd1 2048 4982527 4980480 2.4G fd Linux raid autodetect /dev/sdd2 4982528 9176831 4194304 2G fd Linux raid autodetect /dev/sdd3 9437184 314367999 304930816 145.4G fd Linux raid autodetect Disk /dev/sde: 500 GiB, 536870912000 bytes, 1048576000 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: dos Disk identifier: 0x96888e42 Device Boot Start End Sectors Size Id Type /dev/sde1 2048 4982527 4980480 2.4G fd Linux raid autodetect /dev/sde2 4982528 9176831 4194304 2G fd Linux raid autodetect /dev/sde3 9437184 314367999 304930816 145.4G fd Linux raid autodetect Disk /dev/md0: 2.4 GiB, 2549940224 bytes, 4980352 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk /dev/md1: 2 GiB, 2147418112 bytes, 4194176 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk /dev/zram0: 1 GiB, 1086324736 bytes, 265216 sectors Units: sectors of 1 * 4096 = 4096 bytes Sector size (logical/physical): 4096 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/zram1: 1 GiB, 1086324736 bytes, 265216 sectors Units: sectors of 1 * 4096 = 4096 bytes Sector size (logical/physical): 4096 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/md2: 145.4 GiB, 156123529216 bytes, 304928768 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes 

网上说的比较多的是 grow 但是依旧是 150 G 而不是 500

# mdadm --grow --size=max /dev/md2 mdadm: component size of /dev/md2 unchanged at 152464384K 

然后

# resize2fs /dev/md2 resize2fs 1.42.6 (21-Sep-2012) resize2fs: Device or resource busy while trying to open /dev/md2 Couldn't find valid filesystem superblock. 

似乎都不行. 求大佬解答下。

还是只能采用新的两个硬盘组个新的 raid1，把数据同步到这个新的存储池，删掉旧的。