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readynas ultra 4 plus expansion fails
dear everybody it seems my trusty ultra does not want to expand when given a new disk. the original configuration was 2tb, 3tb, 3tb,3tb. giving me around 7tb of space. i've replaced the 2tb with a...
For some of it, but not everything. The box is pretty full and I don't have enough storage space around unfortunately.
Sorry for coming with this again, I've reported this problem previously, but was to busy to act on the offer by mdmg to look into it further.
I've upgraded one of my disks from previously 2TB to 4 TB (the other 3 are all 3TB). Unfortunately no expansion happened after detecting the new disk, which is kind of annoying.
i've now looked into things, and one thing i've noticed is that fdisk reports the first disk as 3TB (Disk /dev/sda: 4294967295 sectors, 2047G), the exact same size as the others. to be precise, /dev/sda to /dev/sdd all look like this:
Disk /dev/sdd: 4294967295 sectors, 2047G
Logical sector size: 512
Disk identifier (GUID): xxxxxxx
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 5860533134Number Start (sector) End (sector) Size Code Name
1 64 8388671 4096M 0700
2 8388672 9437247 512M 0700
3 9437248 3907025072 1858G 0700
4 3907025080 5860529038 931G 0700in addition, sda shows the last usable sector as 7814037134, which would fit the disk size...
is that normal, or the root of the problem? what could i do?
thanks in advance for any pointers
4294967295 is 2**32-1 -> the largest size possible with MBR. Note that with a sector size of 512 bytes, that is a 2 TiB partition.
So that value comes from protective MBR, the real GPT partitions are shown later on:
Number Start (sector) End (sector) Size Code Name
1 64 8388671 4096M 0700
2 8388672 9437247 512M 0700
3 9437248 3907025072 1858G 0700
4 3907025080 5860529038 931G 0700This does add up to 3 TB.
What should you do? Re-engage with mdgm :smileywink:
majello
I have moved your new post to the end of the old topic as you have mentioned so it is easier to pick up all the information. Renamed post titles to match.
- Thanks for the move, i shouldn't have opened a new topic. I managed to fix this on my own. For some reason, the automatic resize failed due to some problems with segments. A manual pvresize to max-size managed to complete the operation, after which an lvresize (-L+xxxG) and a resize2fs were basically painless as well. So i am all set, although i fear that i'll have to go through this with every upgrade from now on. I need to dig up 8TB for backup space somewhere and do a factory reset at some point. Or spend 1K on a 316, which i've been eyeing from some time now. Nice kit, expensive through. Thanks for the support i got, btw, and for keeping the treasure trove that is the old posts from the previous forum around. majello
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