SIGHUP will update almost all EXPORT options.
Fsid_type is not updated, and that is probably good, changing fsid_type would
change all the handles, rendering any clients that have mounts to have invalid
mounts, getting ESTALE on every access to an export where fsid_type changed.
The EXPORT { FSAL { } } options in general are not updated, additional work
would be required to accomplish that (we would need to add an update_export
FSAL method).
Frank
From: Pradeep [mailto:pradeeptho...@gmail.com]
Sent: Tuesday, January 9, 2018 4:07 PM
To: nfs-ganesha-devel <nfs-ganesha-devel@lists.sourceforge.net>
Subject: [Nfs-ganesha-devel] Is there a way to update params in FSAL block with
SIGHUP?
Hello,
It is possible to update export specific parameters added in the FSAL block
using SIGHUP only(instead of first doing RemoveExport and then doing SIGHUP)?
RemoveExport has the downside that it will blow away the cache and fail
inflight I/Os.
For example, FSAL VFS has parameter fsid_type. It doesn't seem to get updated
with just a SIGHUP after a change.
static struct config_item export_params[] = {
CONF_ITEM_NOOP("name"),
CONF_ITEM_TOKEN("fsid_type", FSID_NO_TYPE,
fsid_types,
vfs_fsal_export, fsid_type),
CONFIG_EOL
};
static struct config_block export_param_block = {
.dbus_interface_name = "org.ganesha.nfsd.config.fsal.vfs-export%d",
.blk_desc.name <http://blk_desc.name> = "FSAL",
.blk_desc.type = CONFIG_BLOCK,
.blk_desc.u.blk.init = noop_conf_init,
.blk_desc.u.blk.params = export_params,
.blk_desc.u.blk.commit = noop_conf_commit
};
struct config_block *vfs_sub_export_param = &export_param_block;
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