Public bug reported: # make-bcache -B /dev/nvme4n1 UUID: 569e90b3-cc2a-4a0e-a201-476c426a2141 Set UUID: d8d8458a-01df-481e-a7dc-e75843a9608f version: 1 block_size: 1 data_offset: 16
kern.log: Apr 12 18:21:56 pc6a-rb3-n2 kernel: [ 723.854659] bcache: register_bdev() error nvme4n1: cannot allocate memory Apr 12 18:21:56 pc6a-rb3-n2 kernel: [ 723.854662] bcache: register_bdev_worker() error /dev/nvme4n1: fail to register backing device Same error message is mentioned in https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1909518, but the suggested configuration change does not fix the issue: # nvme id-ns /dev/nvme4n1 -n 1 -H |grep "LBA Format" [3:0] : 0x3 Current LBA Format Selected LBA Format 0 : Metadata Size: 0 bytes - Data Size: 512 bytes - Relative Performance: 0 Best LBA Format 1 : Metadata Size: 8 bytes - Data Size: 512 bytes - Relative Performance: 0 Best LBA Format 2 : Metadata Size: 0 bytes - Data Size: 1 bytes - Relative Performance: 0 Best LBA Format 3 : Metadata Size: 0 bytes - Data Size: 4096 bytes - Relative Performance: 0 Best (in use) LBA Format 4 : Metadata Size: 8 bytes - Data Size: 4096 bytes - Relative Performance: 0 Best LBA Format 5 : Metadata Size: 64 bytes - Data Size: 4096 bytes - Relative Performance: 0 Best Using a Dell Ent NVMe P5800x WI U.2 400GB storage works as expected: # make-bcache -B /dev/nvme2n1 UUID: b1405a6d-8732-4175-8aba-d67be23b3ff0 Set UUID: af6b190f-a57e-4f2b-926e-904a95268390 version: 1 block_size: 8 data_offset: 16 # lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS ... nvme2n1 259:1 0 372.6G 0 disk └─bcache0 252:0 0 372.6G 0 disk ... kern.log: Apr 12 18:47:33 pc6a-rb3-n2 kernel: [ 2261.135332] bcache: register_bdev() registered backing device nvme2n1 Kernel versions tested: 5.19.0-38-generic #39~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC 5.15.0-69-generic #76-Ubuntu SMP ** Affects: linux (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2016040 Title: Creating bcache backing device using a Dell Ent NVMe CM6 MU 6.4TB storage fails with "cannot allocate memory" error Status in linux package in Ubuntu: New Bug description: # make-bcache -B /dev/nvme4n1 UUID: 569e90b3-cc2a-4a0e-a201-476c426a2141 Set UUID: d8d8458a-01df-481e-a7dc-e75843a9608f version: 1 block_size: 1 data_offset: 16 kern.log: Apr 12 18:21:56 pc6a-rb3-n2 kernel: [ 723.854659] bcache: register_bdev() error nvme4n1: cannot allocate memory Apr 12 18:21:56 pc6a-rb3-n2 kernel: [ 723.854662] bcache: register_bdev_worker() error /dev/nvme4n1: fail to register backing device Same error message is mentioned in https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1909518, but the suggested configuration change does not fix the issue: # nvme id-ns /dev/nvme4n1 -n 1 -H |grep "LBA Format" [3:0] : 0x3 Current LBA Format Selected LBA Format 0 : Metadata Size: 0 bytes - Data Size: 512 bytes - Relative Performance: 0 Best LBA Format 1 : Metadata Size: 8 bytes - Data Size: 512 bytes - Relative Performance: 0 Best LBA Format 2 : Metadata Size: 0 bytes - Data Size: 1 bytes - Relative Performance: 0 Best LBA Format 3 : Metadata Size: 0 bytes - Data Size: 4096 bytes - Relative Performance: 0 Best (in use) LBA Format 4 : Metadata Size: 8 bytes - Data Size: 4096 bytes - Relative Performance: 0 Best LBA Format 5 : Metadata Size: 64 bytes - Data Size: 4096 bytes - Relative Performance: 0 Best Using a Dell Ent NVMe P5800x WI U.2 400GB storage works as expected: # make-bcache -B /dev/nvme2n1 UUID: b1405a6d-8732-4175-8aba-d67be23b3ff0 Set UUID: af6b190f-a57e-4f2b-926e-904a95268390 version: 1 block_size: 8 data_offset: 16 # lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS ... nvme2n1 259:1 0 372.6G 0 disk └─bcache0 252:0 0 372.6G 0 disk ... kern.log: Apr 12 18:47:33 pc6a-rb3-n2 kernel: [ 2261.135332] bcache: register_bdev() registered backing device nvme2n1 Kernel versions tested: 5.19.0-38-generic #39~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC 5.15.0-69-generic #76-Ubuntu SMP To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2016040/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
