[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/1909518
Title:
bcache register_bdev() error cannot allocate memory
Status in linux package in Ubuntu:
Expired
Bug description:
On 20.04(focal) ga-kernel and 18.04 (hwe-kernel). To make.bcache would
fail as below if the back devices are large than 1024G ( 1025 would
fail, but not 1024 ).
[ 727.756453] bcache: register_bdev() error nvme12n1: cannot allocate memory
[ 727.756456] bcache: register_bcache() error : failed to register device
[ 727.756471] bcache: bcache_device_free() bcache device (NULL gendisk)
stopped
There are fix in 5.9 kernel and it can work after install 5.9 kernel
on 20.04. The 5.9 kernel are download it from:
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.9.16/
The similar bug report can be found at
https://bugzilla.redhat.com/show_bug.cgi?id=1783075.
It might related to back device type. it was tested on "Lenov SR665
Server" and "Intel P4510 4.0TB U.2 NVMe SSD", the caching disk are
"Intel P4800X 375GB U.2 NVMe SSD".
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