SWAP == 0 [GELÖST]

[24unix]

Raid 0 is not something I would ever use.

This time my fault, I meant of course Raid1.

Code: Select all

╰─➤  cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
md128 : active raid1 sdb2[3] sdp2[2]
      125000007 blocks super 1.2 [2/2] [UU]

I have used RAID 5, 6, 0+10, 10+0 and all variants.
Never ever again.

Lost too many data over the years, when that happens and a backup failed, you never use raid other then RAID1.

There are other options:

Code: Select all

╰─➤  zpool status
  pool: dozer
 state: ONLINE
  scan: scrub repaired 0B in 00:06:03 with 0 errors on Sun Nov 13 00:30:04 2022
config:

	NAME                                               STATE     READ WRITE CKSUM
	dozer                                              ONLINE       0     0     0
	  mirror-0                                         ONLINE       0     0     0
	    ata-Samsung_SSD_870_EVO_250GB_S6PENL0T907009A  ONLINE       0     0     0
	    ata-Samsung_SSD_870_EVO_250GB_S6PENL0T907057K  ONLINE       0     0     0

errors: No known data errors

  pool: tank
 state: ONLINE
  scan: scrub repaired 0B in 03:23:42 with 0 errors on Sun Nov 13 03:47:44 2022
config:

	NAME                                  STATE     READ WRITE CKSUM
	tank                                  ONLINE       0     0     0
	  raidz2-0                            ONLINE       0     0     0
	    ata-TOSHIBA_DT01ACA300_Z93MYEWAS  ONLINE       0     0     0
	    ata-TOSHIBA_DT01ACA300_Z9BNBA3AS  ONLINE       0     0     0
	    ata-TOSHIBA_DT01ACA300_Z9BNBBSAS  ONLINE       0     0     0
	    ata-TOSHIBA_DT01ACA300_Z9UP60PAS  ONLINE       0     0     0
	    ata-TOSHIBA_DT01ACA300_Z9UPKYKAS  ONLINE       0     0     0
	cache
	  ata-INTENSO_SSD_128GB_F32564R03962  ONLINE       0     0     0

errors: No known data errors

Dozer holds my VMs, Tank my user data.

Oomd is rubbish,

I don't think so.

I do not use it. It can kill mysql and then you loose KeyHelp.
Sorry, I rather have a bit of swapping then oomd.

You can use both.

You use your way, I use mine, but oomd is not something I want to use.

SSD's do not die after 10 years, they often last longer. I still have an Intel 40GB, one of the first, it's still fine, no problem at all.
I use 500GB SSD's for my servers and they have a lot of traffic, no issue what so ever, the eldest is about 6 years old.

3D-SSD's last even longer. I use a few harddisks as old-fashion backups, but never needed them, so far.

The Toshiba devices above are HDD, as they are cheap, each holds 3 TB.