I currently have 2x 128GB drives in a RAID1 (MDADM) array.Device     Boot    Start       End   Sectors  Size Id Type/dev/sde1           2048  41945087  41943040   20G fd Linux raid autodetect/dev/sde2       41945088  50333695   8388608    4G fd Linux raid autodetect/dev/sde3       50333696  52430847   2097152    1G bf Solaris/dev/sde4       52430848 250069679 197638832 94.2G bf SolarisDevice     Boot    Start       End   Sectors  Size Id Type/dev/sdf1           2048  41945087  41943040   20G fd Linux raid autodetect/dev/sdf2       41945088  50333695   8388608    4G fd Linux raid autodetect/dev/sdf3       50333696  52430847   2097152    1G bf Solaris/dev/sdf4       52430848 250069679 197638832 94.2G bf SolarisI am changing them over to 256GB drives (/dev/sdg and /dev/sdh). I have made sure to copy over the entire disk (I realise I will need to extend the partition so that it uses the free space).Device     Boot    Start       End   Sectors  Size Id Type/dev/sdg1           2048  41945087  41943040   20G fd Linux raid autodetect/dev/sdg2       41945088  50333695   8388608    4G fd Linux raid autodetect/dev/sdg3       50333696  52430847   2097152    1G bf Solaris/dev/sdg4       52430848 250069679 197638832 94.2G bf SolarisDevice     Boot    Start       End   Sectors  Size Id Type/dev/sdh1           2048  41945087  41943040   20G fd Linux raid autodetect/dev/sdh2       41945088  50333695   8388608    4G fd Linux raid autodetect/dev/sdh3       50333696  52430847   2097152    1G bf Solaris/dev/sdh4       52430848 250069679 197638832 94.2G bf SolarisI am just wondering, what is the best way to effectively replace these 128GB drives with the 256GB drives to make them bootable?I tried (silly) to just pull the old 128GB drives and boot, but it gave me missing mdadm error...Would it be best to just create a new array with the two new ones and then delete the old array? Here is an output of /proc/mdstatcat /proc/mdstatPersonalities : [raid1]md1 : active (auto-read-only) raid1 sdf2[0] sde2[1]      4190208 blocks super 1.2 [2/2] [UU]md0 : active raid1 sdf1[0] sde1[1]      20955136 blocks super 1.2 [2/2] [UU]
Upgrading 2x disks in mdadm raid1
linux;raid;mdadm