먼저, 이전에도 이런 질문이 있었다면 사과드립니다만, 키워드 조합이 포함된 링크를 찾을 수 없습니다.
내 질문은 - 두 장치가 모두 SSD인 RAID1의 BTRFS에서 SSD 최적화가 어떻게 작동합니까?
또한 fstrim은 /dev/sdb1을 선택하지 않는 것 같습니다. 이 기사 끝부분의 출력을 참조하세요.
RAID1 구성에는 /dev/sda1 및 /dev/sdb1(SSD에 두 개의 파티션)이 있습니다. 하지만 다음 dmesg 출력에서는 sdb1에 대한 메시지가 표시되지 않습니다.
pi@testpi:~ $ dmesg | grep btrfs
[Thu Apr 20 00:35:06 2023] Btrfs loaded, crc32c=crc32c-generic, zoned=no, fsverity=no
[Thu Apr 20 00:35:06 2023] BTRFS: device label nasdisk_01 devid 1 transid 200 /dev/sdd1 scanned by systemd-udevd (209)
[Thu Apr 20 00:35:06 2023] BTRFS: device fsid 69f422a2-fea7-424c-886b-f291068dae9f devid 4 transid 73286 /dev/sdb1 scanned by systemd-udevd (205)
[Thu Apr 20 00:35:06 2023] BTRFS: device fsid 69f422a2-fea7-424c-886b-f291068dae9f devid 3 transid 73286 /dev/sda1 scanned by systemd-udevd (204)
[Thu Apr 20 00:35:06 2023] BTRFS info (device sdd1): using crc32c (crc32c-generic) checksum algorithm
[Thu Apr 20 00:35:06 2023] BTRFS info (device sdd1): setting nodatacow, compression disabled
[Thu Apr 20 00:35:06 2023] BTRFS info (device sdd1): disk space caching is enabled
[Thu Apr 20 00:35:06 2023] BTRFS info (device sda1): using crc32c (crc32c-generic) checksum algorithm
[Thu Apr 20 00:35:06 2023] BTRFS info (device sda1): disk space caching is enabled
[Thu Apr 20 00:35:07 2023] BTRFS info (device sdd1): enabling ssd optimizations
[Thu Apr 20 00:35:07 2023] BTRFS info (device sda1): enabling ssd optimizations
내 fstab(부분 - 여기서는 btrfs가 아닌 항목이 제거됨)은 다음과 같습니다.
PARTUUID=9c860f91-01 /mnt/raid1_01 btrfs defaults,noatime,nodiratime 0 2
PARTUUID=9c860f91-01 /mnt/media btrfs defaults,noatime,nodiratime,subvol=@media 0 2
PARTUUID=9c860f91-01 /mnt/docker-containers btrfs defaults,noatime,nodiratime,subvol=@docker-containers 0 2
PARTUUID=9c860f91-01 /mnt/shared-samba btrfs defaults,noatime,nodiratime,subvol=@shared-samba 0 2
PARTUUID=9c860f91-01 /mnt/shared-onedrive btrfs defaults,noatime,nodiratime,subvol=@shared-onedrive 0 2
PARTUUID=9c860f91-01 /mnt/docker-containers-databases btrfs defaults,noatime,nodiratime,subvol=@docker-containers-databases 0 2
PARTUUID=9c860f91-01 /mnt/work btrfs defaults,noatime,nodiratime,subvol=@work 0 2
mount 명령의 출력은 다음과 같습니다.
pi@testpi:~ $ mount | grep btrfs
/dev/sdd1 on /mnt/nasdisk_01 type btrfs (rw,noatime,nodiratime,nodatasum,nodatacow,ssd,space_cache,subvolid=5,subvol=/)
/dev/sda1 on /mnt/docker-containers-databases type btrfs (rw,noatime,nodiratime,ssd,space_cache,subvolid=394,subvol=/@docker-containers-databases)
/dev/sda1 on /mnt/shared-samba type btrfs (rw,noatime,nodiratime,ssd,space_cache,subvolid=363,subvol=/@shared-samba)
/dev/sda1 on /mnt/shared-onedrive type btrfs (rw,noatime,nodiratime,ssd,space_cache,subvolid=391,subvol=/@shared-onedrive)
/dev/sda1 on /mnt/work type btrfs (rw,noatime,nodiratime,ssd,space_cache,subvolid=397,subvol=/@work)
/dev/sda1 on /mnt/docker-containers type btrfs (rw,noatime,nodiratime,ssd,space_cache,subvolid=362,subvol=/@docker-containers)
/dev/sda1 on /mnt/media type btrfs (rw,noatime,nodiratime,ssd,space_cache,subvolid=398,subvol=/@media)
/dev/sda1 on /mnt/raid1_01 type btrfs (rw,noatime,nodiratime,ssd,space_cache,subvolid=5,subvol=/)
fstrim의 출력에는 /dev/sdb1이 무시되는 것으로 표시됩니다.
pi@testpi:~ $ sudo fstrim -vA
/mnt/nasdisk_01: 2.2 GiB (2363473920 bytes) trimmed on /dev/sdd1
/mnt/raid1_01: 5 GiB (5337776128 bytes) trimmed on /dev/sda1
/: 2.9 GiB (3139751936 bytes) trimmed on /dev/sdc2
/boot: 201.8 MiB (211645952 bytes) trimmed on /dev/sdc1