Messages in this thread | | | From | Michal Suchanek <> | Subject | [PATCH 0/2] Tristate moount option comatibility fixup | Date | Mon, 9 Nov 2020 20:10:07 +0100 |
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Hello,
after the tristate dax option change some applications fail to detect pmem devices because the dax option no longer shows in mtab when device is mounted with -o dax.
At first it might seem stupid to detect pmem by looking at the mount options.
However, if the application actually wants a mount point properly configured for dax rather than just backed by pmem I do not see any other easy way.
Also this happens during early installtion steps when the mounted filesystem is typically empty and you want to perform non-destructive detection.
If there are better ways to detect dax enabled mount poins I want to hear all about it. In the meantime we have legacy applications to support.
It also makes sense that when you mount a device with -o dax it actually shows dax in the mount options. Not doind so is confusing for humans as well.
Thanks
Michal
Michal Suchanek (2): xfs: show the dax option in mount options. ext4: show the dax option in mount options
References: bsc#1178366
fs/ext4/super.c | 2 +- fs/xfs/xfs_super.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)
-- 2.26.2
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