Thanks ahead for any help.
My original setup was an Areca 1220 RAID card with (5) 2TB drives in RAID 5 with a hot spare, making only 4 of them part of the array for a total of 6TB. I then created an LVM2 volume and mounted it as /storage (my root is a separate drive). I formated the LVM2 volume as EXT4.
A few days ago, I hooked up another 2TB (exact same model) drive, the card found it, I was able to initialize it (actually had to set it to 7999GB for some silly reason) and was able to expand my RAID volume just fine.
I found this guy: http://causton.net/areca.shtml had a nearly identical setup, so I tried following his instructions, but when I get to
pvdisplay it still says there is only the original amount of space available. Here is the output of pvdisplay:
--- Physical volume --- PV Name /dev/sdb1 VG Name grp0 PV Size 5.46 TiB / not usable 3.81 MiB Allocatable yes (but full)` PE Size 4.00 MiB Total PE 1430510` Free PE 0` Allocated PE 1430510` PV UUID n3Jzyl-nWUw-lKGC-KiJb-7yUu-3jkI-GOOytf`
So you can see there is 0 free PE when, to my understanding, there should be some.
I also found other people who had similar issues on various forums, including this one, but none of their advice helped either, and I actually got to the point where I couldn't mount the volume anymore, but was able to revert back to before I goofed.
I have tried rebooting, upgrading the RAID firmware, manually setting the PE size, and even seeing if the file system would increase automagically, nothing worked. Another fun thing,
gparted) show 8TB available, but says that it cannot manage LVM partions, so no apparent luck there.
For good measure, here is
--- Logical volume --- LV Name /dev/grp0/vol0 VG Name grp0 LV UUID cQ2Eqv-qMDV-xa7D-cMLA-EU1i-3pKg-iJQ9gz LV Write Access read/write LV Status available # open 1 LV Size 5.46 TiB Current LE 1430510 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 251:0
--- Volume group --- VG Name grp0 System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 18 VG Access read/write VG Status resizable MAX LV 0 Cur LV 1 Open LV 1 Max PV 0 Cur PV 1 Act PV 1 VG Size 5.46 TiB PE Size 4.00 MiB Total PE 1430510 Alloc PE / Size 1430510 / 5.46 TiB Free PE / Size 0 / 0 VG UUID zqKhpV-j7fi-IeIU-A4aV-0fDo-YWHF-C5M0il
Model: Areca ARC-1220-VOL#00 (scsi) Disk /dev/sdb: 7999GB Sector size (logical/physical): 512B/512B Partition Table: gpt Number Start End Size File system Name Flags 1 1049kB 6000GB 6000GB lvm
And another strange thing, when I run
pvscan I get this, and I don't get why:
PV /dev/sdb1 VG grp0 lvm2 [5.46 TiB / 0 free] Total: 1 [1.46 TiB] / in use: 1 [1.46 TiB] / in no VG: 0 [0 ]
If there is anything else I can provide, please let me know.