This is an old revision of the document!
This page contains an overview of the machine and an everyday log of what is being done. Later there will be more accurate documentation.
The machine has 3 disks.
See description in this graph below.
.------------------------------------------. | M.2 Disk 250GB | |------------------------------------------| .----------| Main system disk - boot / | SW RAID1 | | operating system |-------------------------------------------------------------. | | /swap | | | | /ahome (admin home separated from users) | | | '------------------------------------------' | | | | SW RAID1 | | .----------------------------------------. .----------------------------------------. | | | U.2 disk 1 960GB | | U.2 disk 2 960GB | | | |----------------------------------------| |----------------------------------------| | | | - User folders /home 700GB |<---------------->| - User folders /home 700GB | | | | -------------------------------------- | SW RAID1 | -------------------------------------- | | --------->| - copy of boot disk (bootable) / 100GB | | - copy of boot disk (bootable) / 100GB |<---' | copy of /ahome 100GB260GB |<---------------->| copy of /ahome 100GB | '----------------------------------------' '----------------------------------------' .------------------------------------------------. __________ | RAID6 storage - 8x 12TB disks /disk | __________ [_|||||||_°]|------------------------------------------------|[_|||||||_°] [_|||||||_°]| - 7x 12TB in RAID6 -> 60TB (50-55 usable) |[_|||||||_°] [_|||||||_°]| - 1x 12TB spare |[_|||||||_°] '------------------------------------------------'
One can login to the machine as it does with aurora.
Additionally admins can login to a separate monitor machine to check the status of hardware components. This machine will also send warnings in case of issues.
____ __ | | |==| .------Admins------>|____| | | HW Monitor | /::::/ |__| | | __ _ |<monitoring> o [__]|=| v /|\ /::/|_| ________ / \ |==|=====| Own laptop / teddi | | | | | | | | | | | ALICE new machine '--Researchers-->| | | | |====°| |__|_____|
Florido will take care of OS installation and hardware maintenance/monitoring. This info will be shared with ALICE admins. ALICE admins will have access as root and control any parameter they want.
mkfs.xfs -f -d su=1m,sw=5 -L alicedisk /dev/sda
su=1m | 1MB strip size |
---|---|
sw=5 | 5 RAID disks (+2 parity) |
-L alicedisk | xfs label |
/dev/sda | the raid shown as a device to the kernel |
/disk
# RAID disk UUID=0d4a40e5-084e-404f-9219-6c3645929ec2 /disk xfs rw,seclabel,relatime,attr2,inode64,sunit=2048,swidth=10240,noquota 0 0
/opt/MegaRAID/storcli/
storcli
in root .bashrcstorcli /c0 add vd r6 name=alicedisk drives=133:0-6 Strip=1024
/c0/v0
storcli /c0/e133/s7 add hotsparedrive