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1TB Cache, only 256GB available, why?

Featured Replies

Hi, I am using a 1 TB SanDisk Extreme Pro SSD as Cache (sda, xfs Filesystem). But it only shows 256GB Size, (of which 119 GB are used and 137GB free).

Any idea where to look for the missing 744 GB? I searched the forum without success, any recommendations? Thanks a lot!

latest Unraid 7, if I should post other log files, please let me know.

 

Best, Michael

 

 

 

http://192.168.178.3/logterminal/sda/:

text  error  warn  system  array  login  

Feb 14 09:44:14 Tower kernel: sd 0:0:0:0: [sda] 1953459617 512-byte logical blocks: (1.00 TB/931 GiB)
Feb 14 09:44:14 Tower kernel: sd 0:0:0:0: [sda] Write Protect is off
Feb 14 09:44:14 Tower kernel: sd 0:0:0:0: [sda] Mode Sense: 37 00 10 00
Feb 14 09:44:14 Tower kernel: sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, supports DPO and FUA
Feb 14 09:44:14 Tower kernel: sd 0:0:0:0: [sda] Preferred minimum I/O size 512 bytes
Feb 14 09:44:14 Tower kernel: sd 0:0:0:0: [sda] Optimal transfer size 2097152 bytes
Feb 14 09:44:14 Tower kernel: sda: sda1
Feb 14 09:44:14 Tower kernel: sd 0:0:0:0: [sda] Attached SCSI disk
Feb 14 09:45:27 Tower emhttpd: online: SanDisk_Extreme_Pro_55AF_323230373732343033313634-0:0 (sda) 512 1953459617
Feb 14 09:45:27 Tower emhttpd: import 30 pool device: (sda) SanDisk_Extreme_Pro_55AF_323230373732343033313634-0:0
Feb 14 09:45:28 Tower emhttpd: read SMART /dev/sda
Feb 14 09:45:44 Tower emhttpd: import 30 pool device: (sda) SanDisk_Extreme_Pro_55AF_323230373732343033313634-0:0
Feb 14 09:45:45 Tower emhttpd: /sbin/blkid /dev/sda1 2>&1
Feb 14 09:45:45 Tower emhttpd: /dev/sda1: UUID="92c09353-170e-4deb-905a-427138038db9" BLOCK_SIZE="512" TYPE="xfs"
Feb 14 09:45:45 Tower emhttpd: shcmd (41): mount -t xfs -o noatime,nouuid /dev/sda1 /mnt/cache
Feb 14 09:45:45 Tower kernel: XFS (sda1): Mounting V5 Filesystem 92c09353-170e-4deb-905a-427139038db9
Feb 14 09:45:45 Tower kernel: XFS (sda1): Ending clean mount
Feb 14 12:44:34 Tower nginx: 2025/02/14 12:44:34 [crit] 10774#10774: *68647 connect() to unix:/var/tmp/sda.sock failed (2: No such file or directory) while connecting to upstream, client: 192.168.178.56, server: , request: "GET /logterminal/sda/ HTTP/1.1", upstream: "http://unix:/var/tmp/sda.sock:/", host: "192.168.178.5", referrer: "http://192.168.178.5/Main"

** Press ANY KEY to close this window ** 

 

Solved by MichaelD

  • Community Expert

What do you get from command line with this?

 

lsblk

  • Author

Hi, here the results of "lsblk":

 

root@Tower:~# lsblk
NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTS
loop0    7:0    0   556M  1 loop /usr
loop1    7:1    0  69.1M  1 loop /lib
sda      8:0    0 931.5G  0 disk 
└─sda1   8:1    0 931.5G  0 part /var/lib/docker
                                 /mnt/cache
sdb      8:16   0  16.4T  0 disk 
└─sdb1   8:17   0  16.4T  0 part 
sdc      8:32   0  16.4T  0 disk 
└─sdc1   8:33   0  16.4T  0 part 
sdd      8:48   0  16.4T  0 disk 
└─sdd1   8:49   0  16.4T  0 part 
sde      8:64   1  29.9G  0 disk 
└─sde1   8:65   1  29.9G  0 part /boot
sdf      8:80   0 119.2G  0 disk 
md1p1    9:1    0  16.4T  0 md   /mnt/disk1

 

are the docker containers "stealing" disk space? If yes, where could I define the docker sizes and change it?

  • Community Expert

What do you get from command line with this?

fdisk -l /dev/sda

 

  • Author
root@Tower:~# fdisk -l /dev/sda
Disk /dev/sda: 931.48 GiB, 1000171323904 bytes, 1953459617 sectors
Disk model: Extreme Pro 55AF
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 2097152 bytes
Disklabel type: dos
Disk identifier: 0x00000000

Device     Boot Start        End    Sectors   Size Id Type
/dev/sda1          64 1953459616 1953459553 931.5G 83 Linux

 

  • Community Expert

I don't understand your lsblk output. Why is /var/lib/docker mounted there?

 

Disable Docker in Settings and do lsblk again.

  • Author
root@Tower:~# lsblk
NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTS
loop0    7:0    0   556M  1 loop /usr
loop1    7:1    0  69.1M  1 loop /lib
sda      8:0    0 931.5G  0 disk 
└─sda1   8:1    0 931.5G  0 part /mnt/cache
sdb      8:16   0  16.4T  0 disk 
└─sdb1   8:17   0  16.4T  0 part 
sdc      8:32   0  16.4T  0 disk 
└─sdc1   8:33   0  16.4T  0 part 
sdd      8:48   0  16.4T  0 disk 
└─sdd1   8:49   0  16.4T  0 part 
sde      8:64   1  29.9G  0 disk 
└─sde1   8:65   1  29.9G  0 part /boot
sdf      8:80   0 119.2G  0 disk 
md1p1    9:1    0  16.4T  0 md   /mnt/disk1

lsblk after docker is disabled

 

  • Community Expert

Partition looks correct, but looks like the fs is not using it all, try typing this with the array running:

 

xfs_growfs /mnt/cache

 

Then restart the array.

  • Author
  • Solution

you are the best!

Thanks a lot, this worked, full 1GB is available again! Thanks for your friendly and fast support!

Team Interlagos rulez!!!!

Best, Michael

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