On Wed, 3 Jul 2019 20:48:42 -0500, Lewis Balentine wrote: > *First, version numbers:* > My desktop is running: Linux Mint 19.1 with the MATE 1.20.1 user interface, > Kernel 4.15.0-52 Generic x86_64 > The network machine is running: Linux Mint 18.3 with the MATE 1.18.0 user > interface, Kernel 4.4.0-141 Generic x86_64 > SQLite Version 3.22.0 > DB Browser for SQLite Version 3.10.1 > Python 3.6.8 > > *Second, never assume:* > It may not be 'recommended' to access a sqlite database file on a network > share but that makes a lot of assumptions. > > *Problem:* > The target sqlite3 database file is on a samba network share and mounted on > desktop with the following command: > sudo mount -o username=[myname],password=[mypw] -t cifs //[ipaddress]/kwpvr > /mnt/kwpvr > The file is marked readwrite for owner, group and others: -rw-rw-rw- 1 > [myname] [myname] 40960 Jul 3 19:25 kwpvr3.db > The samba share is marked to allow create, delete and guest access > In Caja I can create, copy, delete, rename any file on that share. > > When I open the file in DB Browser for SQLite I can browse the tables but I > can not change anything. > The error is: "attempt to write a readonly database" > > In python I use the following line to open a sqlite connection: > sql3conn = sqlite3.connect("file:" + cfg["dbfile"] + "?mode=rw", uri=True) > That opens and works on a local file but not on the mounted file system. > I get the same error as above when trying to update a record. > > So I fell back to the lowest common denominator: the SQLite3 command line > utility > Works fine locally but on the mounted file system I get the same error. > sqlite3 "file:/mnt/kwpvr/kwpvr3.db?mode=rw" "UPDATE Configuration SET > KeyValue='test' WHERE key='Active';" > > *Question:* > Is this the intended behavior of sqlite3 or is this something unique to the > linux platform?
Thanks for the detailed description. My first thought: Is the directory writable? It has to be so SQLite can create a journal file. https://www.sqlite.org/atomiccommit.html#section_3_5 Apart from that, SQLite has to be able to create files in its TMPDIR. https://www.sqlite.org/tempfiles.html#temporary_file_storage_locations -- Regards, Kees Nuyt _______________________________________________ sqlite-users mailing list sqlite-users@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users