Questions tagged [lvmcache]

A new technique which in theory take your existing logical volumes and convert them to be cached devices.

Filter by
Sorted by
Tagged with
0
votes
0answers
55 views

Can't install Ubuntu 20.04 with SSD caching

I've been trying to install Ubuntu with LVM and SDD caching (I've tried both lvmcache and bcache) and keep encountering grub issues. I have two SSDs and two HDDs and have been trying to use LVM to ...
0
votes
0answers
15 views

thin_check a metadata but shows device busy

I create a pool and want to check the metadata device But it shows: syscall 'open' failed: Device or resource busy Note: you cannot run this tool with these options on live metadata. I tried ...
2
votes
1answer
192 views

Ubuntu 18.04 won't boot when LVM volumes are cached

I have an Ubuntu 18.04 PC with the following disk layout : ====================== lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 931,5G 0 disk └─...
2
votes
0answers
687 views

slow startup, failed to connect to lvmetad

Ubuntu 18.04 after install seems to be doing quite OK, but the startup is slow. It's almost minute to get to "cryptluks screen", to enter pass to decrypt lvm partition. I noticed unknown error to me, ...
1
vote
1answer
757 views

How to setup lvm to cache /root on 18.04?

I have two drives and can use lvmcache to cache the hard drive with the SSD with 16.04. However, when I follow the same process with 18.04, I can create the lvmcache but when I reboot, I get the ...
3
votes
1answer
1k views

How to add an SSD cache to an encrypted HDD for desktop/GUI use?

SSHDs seem to be stuck at 4TB and 8GB SSD cache (one model is available with 1TB/32GB) while bigger SSDs are widely available and some solutions exist to to pair an HDD with an SSD in Linux. I'm ...
2
votes
2answers
2k views

lvmcache failed to boot: “device-mapper: cache-policy: unknown policy type”

TL;TR Failed to boot with lvm2's new default cache-pool setting cache-policy-smq The problem I have created a lvm disk with lvmcache on SSD drive on ubuntu 16.04 Following this, but failed to mount ...
10
votes
2answers
5k views

How to install Ubuntu with both disk encryption AND SSD caching

I'm using Ubuntu in a corporate environment, and our security policy states that we have to use full disk encryption. I've also got a laptop with a 32GB mSATA SSD and 750GB of spinning rust. My ...