Is there a way to check filesystem/files on a logical drive in CEPH storage environment

Lalfie

8/13/23, 1:50 PM

Little background. HP C7K hardware

Example partition:

/dev/sdi :
 /dev/sdi1 ceph data, prepared, cluster ceph, osd.21, block /dev/sdi2, block.db /dev/nvme1n1p3, block.wal /dev/nvme1n1p4
 /dev/sdi2 ceph block, for /dev/sdi1

file -s /dev/sdi2
/dev/sdi2: data

fdisk -l /dev/sdi
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.

Disk /dev/sdi: 6000.6 GB, 6000606183424 bytes, 11719933952 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 262144 bytes / 262144 bytes
Disk label type: gpt
Disk identifier: 7E80BC6B-4E4F-4C01-B4F9-E1D4214CB66F


#         Start          End    Size  Type            Name
 1         2048       206847    100M  Ceph OSD        ceph data
 2       206848  11719933918    5.5T  unknown         ceph block

I am trying to validate data on the /dev/sdi2 logical drive before and after maintenance activity. To validate if there was any data loss.

I have tried mounting the drive, but receive the following:

mkdir -p /tmp/mnt
mount /dev/sdi2 /tmp/mnt
mount: /dev/sdi2 is write-protected, mounting read-only
mount: unknown filesystem type '(null)'

Any ideas? Thank you in advance

0 + 0

linux

filesystems

ceph

Rob

8/13/23, 3:57 PM

IMHO your approach is flawed. Use the Ceph (OSD) tools to check the health of your data. https://docs.ceph.com/en/latest/rados/operations/monitoring-osd-pg/ - Unless you have a really old Ceph deployment with OSD's using a FileStore (which uses a conventional file system) you can't mount a ceph OSD. Recent ceph versions use the BlueStore back end ahttps://docs.ceph.com/en/latest/rados/configuration/storage-devices/

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: Is there a way to check filesystem/files on a logical drive in CEPH storage environment

TH: มีวิธีตรวจสอบระบบไฟล์/ไฟล์บนไดรฟ์แบบลอจิคัลในสภาพแวดล้อมที่เก็บข้อมูล CEPH หรือไม่

RO: Există o modalitate de a verifica sistemul de fișiere/fișierele de pe o unitate logică în mediul de stocare CEPH

RU: Есть ли способ проверить файловую систему/файлы на логическом диске в среде хранения CEPH

VI: Có cách nào để kiểm tra hệ thống tệp/tệp trên ổ đĩa logic trong môi trường lưu trữ CEPH không

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