# ML110-01 fdisk Output - Detailed Disk Information **Date**: Generated from `fdisk -l` command **Host**: ml110-01 (192.168.11.10) ## Complete fdisk Output ``` Disk /dev/sda: 931.51 GiB, 1000204886016 bytes, 1953525168 sectors Disk model: ST1000DM003-1ER1 Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disklabel type: gpt Disk identifier: F9CFB0F5-ED1C-477B-9656-5D2651A864E1 Device Start End Sectors Size Type /dev/sda1 34 2047 2014 1007K BIOS boot /dev/sda2 2048 2099199 2097152 1G EFI System /dev/sda3 2099200 1953525134 1951425935 930.5G Linux LVM Partition 1 does not start on physical sector boundary. Disk /dev/sdb: 931.51 GiB, 1000204886016 bytes, 1953525168 sectors Disk model: ST1000DM003-1ER1 Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/mapper/ceph--ba672668--8341--42e0--a8fd--277cee5491e4-osd--block--fcaaaa49--68ea--4664--8559--7f76088f246d: 931.51 GiB, 1000203091968 bytes, 1953521664 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/mapper/pve-swap: 8 GiB, 8589934592 bytes, 16777216 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/mapper/pve-root: 96 GiB, 103079215104 bytes, 201326592 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk /dev/sdc: 28.91 GiB, 31042043904 bytes, 60628992 sectors Disk model: USB 2.0 FD Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: gpt Disk identifier: B9083D28-1E94-45BC-A8A3-DA68BE09A9A9 Device Start End Sectors Size Type /dev/sdc1 64 635 572 286K Microsoft basic data /dev/sdc2 636 17019 16384 8M EFI System /dev/sdc3 17020 3577255 3560236 1.7G Apple HFS/HFS+ /dev/sdc4 3577256 3577855 600 300K Microsoft basic data GPT PMBR size mismatch (3577903 != 60628991) will be corrected by write. ``` ## Disk Analysis ### System Disk: `/dev/sda` (931.51 GiB / 1TB) - **Model**: ST1000DM003-1ER1 (Seagate Barracuda 1TB HDD) - **Partition Table**: GPT - **Disk Identifier**: F9CFB0F5-ED1C-477B-9656-5D2651A864E1 - **Sector Size**: 512 bytes logical / 4096 bytes physical (4K native) - **I/O Size**: 4096 bytes (optimal) - **Partitions**: - `/dev/sda1`: 1007K (sectors 34-2047) - BIOS boot partition - **Note**: Partition 1 does not start on physical sector boundary (minor alignment issue) - `/dev/sda2`: 1G (sectors 2048-2099199) - EFI System partition - `/dev/sda3`: 930.5G (sectors 2099200-1953525134) - Linux LVM - **LVM Volumes**: - `/dev/mapper/pve-swap`: 8 GiB - `/dev/mapper/pve-root`: 96 GiB - Additional space likely in `pve-data` volume (not shown in fdisk output) ### Ceph OSD Disk: `/dev/sdb` (931.51 GiB / 1TB) - **Model**: ST1000DM003-1ER1 (Seagate Barracuda 1TB HDD) - **Status**: Used by Ceph OSD - **Sector Size**: 512 bytes logical / 4096 bytes physical (4K native) - **I/O Size**: 4096 bytes (optimal) - **Ceph OSD Block Device**: - `/dev/mapper/ceph--ba672668--8341--42e0--a8fd--277cee5491e4-osd--block--fcaaaa49--68ea--4664--8559--7f76088f246d` - Size: 931.51 GiB (full disk used for OSD) - **OSD ID**: Likely OSD 0 or 1 (check with `ceph osd tree`) ### USB Drive: `/dev/sdc` (28.91 GiB) - **Model**: USB 2.0 FD (USB Flash Drive) - **Partition Table**: GPT - **Disk Identifier**: B9083D28-1E94-45BC-A8A3-DA68BE09A9A9 - **Sector Size**: 512 bytes (logical/physical) - **Partitions**: - `/dev/sdc1`: 286K - Microsoft basic data - `/dev/sdc2`: 8M - EFI System - `/dev/sdc3`: 1.7G - Apple HFS/HFS+ - `/dev/sdc4`: 300K - Microsoft basic data - **Status**: Appears to be a bootable USB drive (possibly macOS installer or boot media) - **Warning**: GPT PMBR size mismatch detected (partition table may need correction) ## Key Observations 1. **System Disk (`/dev/sda`)**: - 1TB HDD with Proxmox VE installation - Properly partitioned with GPT - Has both BIOS boot and EFI System partitions - LVM configured with swap and root filesystem - 4K native physical sector size (modern HDD standard) 2. **Ceph OSD Disk (`/dev/sdb`)**: - 1TB HDD dedicated to Ceph OSD - Full disk used for Ceph block device - Matches system disk model (same hardware) - Active Ceph OSD in use 3. **USB Drive (`/dev/sdc`)**: - 28.91GB USB flash drive - Contains bootable partitions (EFI, HFS+) - Likely installation media or boot drive - GPT partition table has size mismatch warning 4. **LVM Configuration**: - `pve-swap`: 8GB swap space - `pve-root`: 96GB root filesystem (larger than r630-01's 79.5GB) - Remaining space in LVM likely allocated to `pve-data` ## Comparison with R630-01 | Feature | ML110-01 | R630-01 | |---------|----------|---------| | System Disk | 1TB HDD (sda) | 300GB SAS (sda) | | Ceph OSD Disk | 1TB HDD (sdb) - Active | 6x 250GB SSDs (sdc-sdh) - Available | | Root Filesystem | 96GB | 79.5GB | | Swap | 8GB | 8GB | | Additional Storage | USB drive (sdc) | Secondary 300GB SAS (sdb) | ## Recommendations - **System Disk**: Keep `/dev/sda` as-is for Proxmox VE OS - **Ceph OSD**: `/dev/sdb` is already configured and active - **USB Drive**: `/dev/sdc` appears to be temporary/installation media - can be removed if not needed - **Storage Expansion**: ML110-01 has less available storage than R630-01 (which has 6x SSDs available) ## Related Documentation - [R630-01 fdisk Output](./r630-01-fdisk-output.md) - Comparison disk layout - [R630-01 Disk Layout Reference](./r630-01-disk-layout.md) - R630-01 overview - [Ceph OSD Setup Documentation](../ceph/) - Ceph configuration guides