parted on mdadm

[honeymak]

hi guys,

i made /dev/md0 bigger than 2T so GPT is needed
as everyone knows, only parted will do the job

but i think i found "would-be" bug for parted? or mdadm raid

coz i m seeing some msg about GPT is not found at the end of disk so
parted -l gives wrong result

i guess parted doesn't know my "drive" is /dev/md0 software raid and parted just keep reading GPT info at the raw phy. hard drive level
so it doesn't find the GPT info "at the end of /dev/md0" rather than "the end of /dev/sda"

anyone experienced this?
or any bug info related upstream?


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[Cyker]

How did you make the GPT? In Parted?


My RAID array is 4TB (Well, 3 after RAID5 takes it's cut) and I bypassed this whole problem by formatting /dev/md0 and mounting it directly.

Turns out this lame 2TB partition limit doesn't affect the filesystem so if you don't use a partition, you don't have to care

My next problem will be when I get 2TB drives and beyond since I can't use Linux RAID Autodetect partitions on the actual drives without using buggy stuff like GPT.
I suppose I could just not partition those either and make the RAID elements The Disk, (e.g. /dev/sda) instead of a partition (/dev/sda1) but then I loose the autodetect :S

[honeymak]

ur thing is a trick i used to use

coz if i make partition on /dev/md0 => /dev/md0p1 (note the pX as partition)

that will make the "miracle" bug

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