On 1/10/21 7:28 PM, manuel wolfshant wrote:
On 1/10/21 6:35 PM, Adrian Sevcenco wrote:
P.S. nu stiu daca merita sa pornesc un alt thread asa ca intreb aici:
a reusit cineva sa faca block device level gpt raid1 ?
nu mi-e clar ce intrebi. eu am asa:
adica in loc de asta :
Personalities : [raid1]
md10 : active raid1 sdd[0] sdc[1]
976761408 blocks [2/2] [UU]
bitmap: 0/8 pages [0KB], 65536KB chunk
md1 : active raid1 sda2[0] sdb2[2]
78191488 blocks super 1.0 [2/2] [UU]
bitmap: 0/1 pages [0KB], 65536KB chunk
md2 : active raid1 sda3[0] sdb3[2]
396859200 blocks super 1.0 [2/2] [UU]
bitmap: 2/3 pages [8KB], 65536KB chunk
sa fie doar:
md0 : active raid1 sdc[1] sdb[0]
488386496 blocks [2/2] [UU]
bitmap: 1/4 pages [4KB], 65536KB chunk
adica componentele raid-ului (N.B. raid1)
sa fie device-urile nu partitii
iar apoi formatarea si partitiile sa fie facute asupra /dev/mdX
Oricum urmeaza sa experimentez (la un moment dat) cu offset-uri custom
ale gpt-ului dar mai intii eram curios daca s-a jucat cineva cu asta ..
iar intrebarea asta era in contextul de UEFI boot .. teoretic, conform
specificatiilor orice partitie cu partition GUID code EF00 (adica
C12A7328-F81F-11D2-BA4B-00A0C93EC93B) ar trebui sa fie citita de
firmware chiar daca type-ul partitiei (cum e vazut de blkid e
linux_raid_member)
am avut supriza ca pe o placa de baza asus + fedora sa nu pot face raid1
la esp desi am reusit pe o combinatie gigabyte + ubuntu
prin urmare as dori sa reusesc sa fac raid1 cu intreg deviceul asa cum
am pe systemele bios/mbr si de aia intreb daca a mai incercat cineva
(bine, nu doresc chiar ff tare ca teoretic esp-ul poate fi modificat in
afara array-ului si apoi la asamblarea de la boot vor fi probleme)
si un pic divagat dar relativ la subiect, o intrebare teoretica:
pentru raid-uri 6 are vreo importanta daca in loc sa fac raid intre
partitii fac direct intre deviceuri? in afara de erorile de parted&co
care o sa imi zica ca nu exista/nu recunosc tabela de partitie, ar mai
fi vreo problema?
Multumesc!
Adrian
# cat /proc/mdstat
Personalities : [raid1]
md121 : active raid1 sdb1[1] sda1[0]
48826368 blocks super 1.2 [2/2] [UU]
bitmap: 0/1 pages [0KB], 65536KB chunk
md122 : active raid1 sdb4[1] sda4[0]
4881408 blocks super 1.2 [2/2] [UU]
bitmap: 1/1 pages [4KB], 65536KB chunk
md123 : active raid1 sdb8[1] sda8[0]
377014272 blocks super 1.2 [2/2] [UU]
bitmap: 2/3 pages [8KB], 65536KB chunk
md124 : active raid1 sdb6[1] sda6[0]
195520 blocks super 1.0 [2/2] [UU]
bitmap: 0/1 pages [0KB], 65536KB chunk
md125 : active raid1 sdb3[1] sda3[0]
14642176 blocks super 1.2 [2/2] [UU]
bitmap: 0/1 pages [0KB], 65536KB chunk
md126 : active raid1 sda5[0] sdb5[1]
1463296 blocks super 1.2 [2/2] [UU]
bitmap: 0/1 pages [0KB], 65536KB chunk
md127 : active raid1 sda2[0] sdb2[1]
19529728 blocks super 1.2 [2/2] [UU]
bitmap: 0/1 pages [0KB], 65536KB chunk
unused devices: <none>
# fdisk -l /dev/sda
WARNING: fdisk GPT support is currently new, and therefore in an
experimental phase. Use at your own discretion.
Disk /dev/sda: 480.1 GB, 480103981056 bytes, 937703088 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: gpt
Disk identifier: DB9C7700-0189-45B1-95B6-FB052CD2A546
# Start End Size Type Name
1 2048 97722367 46.6G Linux RAID
2 97722368 136816639 18.7G Linux RAID
3 136816640 166119423 14G Linux RAID
4 166119424 175892479 4.7G Linux RAID
5 175892480 178823167 1.4G Linux RAID
6 178823168 179214335 191M Linux RAID
7 179214336 183408639 2G Linux swap
8 183408640 937701375 359.7G Linux RAID
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--
----------------------------------------------
Adrian Sevcenco, Ph.D. |
Institute of Space Science - ISS, Romania |
adrian.sevcenco at {cern.ch,spacescience.ro} |
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