Getting this error (os error 28) while uploading a file even though I have lot of free space on my Computer

[kalyan860]

error: failed to upload the specified file
caused by: failed to archive file to upload
caused by: failed to add file to the archive
caused by: No space left on device (os error 28)

[timvisee]

When archiving a file to upload, ffsend creates a temporary archive file in your systems /tmp directory.

Could this directory have limited space? I know some systems mount /tmp to a RAM disk.

[kalyan860]

I have a lot of space on my computer which is running linux. So /tmp is not running out of space. So what else it could be? Thanks

[timvisee]

Does the lsblk or mount command list /tmp as mount?

[kalyan860]

Thanks for the reply. Here is output of lsblk

NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTS
sda      8:0    0 931.5G  0 disk 
|-sda1   8:1    0 923.1G  0 part /run/timeshift/backup
|                                /
`-sda2   8:2    0   8.4G  0 part [SWAP]
sr0     11:0    1  1024M  0 rom 

Here is output of mount

proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
sys on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
dev on /dev type devtmpfs (rw,nosuid,relatime,size=1990252k,nr_inodes=497563,mode=755,inode64)
run on /run type tmpfs (rw,nosuid,nodev,relatime,mode=755,inode64)
/dev/sda1 on / type ext4 (rw,noatime)
securityfs on /sys/kernel/security type securityfs (rw,nosuid,nodev,noexec,relatime)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev,inode64)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
cgroup2 on /sys/fs/cgroup type cgroup2 (rw,nosuid,nodev,noexec,relatime,nsdelegate,memory_recursiveprot)
pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime)
bpf on /sys/fs/bpf type bpf (rw,nosuid,nodev,noexec,relatime,mode=700)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=30,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=13515)
tracefs on /sys/kernel/tracing type tracefs (rw,nosuid,nodev,noexec,relatime)
debugfs on /sys/kernel/debug type debugfs (rw,nosuid,nodev,noexec,relatime)
mqueue on /dev/mqueue type mqueue (rw,nosuid,nodev,noexec,relatime)
hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime,pagesize=2M)
configfs on /sys/kernel/config type configfs (rw,nosuid,nodev,noexec,relatime)
none on /run/credentials/systemd-sysusers.service type ramfs (ro,nosuid,nodev,noexec,relatime,mode=700)
fusectl on /sys/fs/fuse/connections type fusectl (rw,nosuid,nodev,noexec,relatime)
tmpfs on /tmp type tmpfs (rw,nosuid,nodev,size=1998164k,nr_inodes=1048576,inode64)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,nosuid,nodev,noexec,relatime)
tmpfs on /run/user/1000 type tmpfs (rw,nosuid,nodev,relatime,size=399632k,nr_inodes=99908,mode=700,uid=1000,gid=1001,inode64)
gvfsd-fuse on /run/user/1000/gvfs type fuse.gvfsd-fuse (rw,nosuid,nodev,relatime,user_id=1000,group_id=1001)
portal on /run/user/1000/doc type fuse.portal (rw,nosuid,nodev,relatime,user_id=1000,group_id=1001)
/dev/sda1 on /run/timeshift/backup type ext4 (rw,relatime)

[timvisee]

The line

tmpfs on /tmp type tmpfs (rw,nosuid,nodev,size=1998164k,nr_inodes=1048576,inode64)

specifies that your /tmp is a RAM-disk limited to 2GB. Since you're likely trying to archive files with a total size larger than 2GB, the operation fails.

A feature could be added to build this archive in a different directory, but that isn't currently supported yet. In the mean time you may archive the files yourself in any desired directory, to send that instead.