tahoe-lafs/trac-2024-07-25
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cosmetics -- version numbers 

[Imported from Trac: page SftpFrontend, version 86]
daira 2013-05-23 16:31:59 +00:00
parent 1c6b56a9c8
commit b721328d47
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SftpFrontend.md

@ -26,9 +26,9 @@ Deleting a directory via the SFTP frontend will not check that it is empty. The
The '`ctime`' and '`mtime`' attributes will always be the same, and are set from the Tahoe `linkmotime` timestamp, which is changed only when the link from the parent directory is modified (see the ['About the metadata' section of webapi.rst](http://tahoe-lafs.org/trac/tahoe-lafs/browser/docs/frontends/webapi.rst#about-the-metadata)). These fields are not updated when the contents of a mutable file are changed. The SFTP protocol and the server are able to represent dates up to the year 2106, but some clients may print dates incorrectly after 2037. The '`ctime`' and '`mtime`' attributes will always be the same, and are set from the Tahoe `linkmotime` timestamp, which is changed only when the link from the parent directory is modified (see the ['About the metadata' section of webapi.rst](http://tahoe-lafs.org/trac/tahoe-lafs/browser/docs/frontends/webapi.rst#about-the-metadata)). These fields are not updated when the contents of a mutable file are changed. The SFTP protocol and the server are able to represent dates up to the year 2106, but some clients may print dates incorrectly after 2037.
Versions of Twisted before 11.0 have [a bug in support for rekeying](http://twistedmatrix.com/trac/ticket/4395). Tahoe-LAFS v1.10.0 requires a later version of Twisted and so will not be affected by this problem. For earlier versions of Tahoe-LAFS, it is recommended to install a version of Twisted between v11.0 and v12.2 inclusive (and use `tahoe --version` to check that it is being used); otherwise, this bug might cause a hang or 100% CPU usage by the gateway when a client tries to rekey. Depending on the client, rekeying may be triggered based on a time interval or the amount of data sent (for example, 1 GiB to 4 GiB for the openssh client), so this problem may not happen immediately when testing. Versions of Twisted before v11.0 have [a bug in support for rekeying](http://twistedmatrix.com/trac/ticket/4395). Tahoe-LAFS v1.10.0 requires a later version of Twisted and so will not be affected by this problem. For earlier versions of Tahoe-LAFS, it is recommended to install a version of Twisted between v11.0 and v12.2 inclusive (and use `tahoe --version` to check that it is being used); otherwise, this bug might cause a hang or 100% CPU usage by the gateway when a client tries to rekey. Depending on the client, rekeying may be triggered based on a time interval or the amount of data sent (for example, 1 GiB to 4 GiB for the openssh client), so this problem may not happen immediately when testing.
Version v12.3 of Twisted is incompatible with the SFTP frontend (#1926, #1525). Upgrade to Tahoe-LAFS v1.10 to fix this problem. Version v12.3 of Twisted is incompatible with the SFTP frontend (#1926, #1525). Upgrade to Tahoe-LAFS v1.10.0 to fix this problem.
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