On Tue, 7 Jun 2016, Edward Ned Harvey (lopser) wrote:
From: tech-boun...@lists.lopsa.org [mailto:tech-boun...@lists.lopsa.org]
On Behalf Of Steven Miano
There is information for how the mounts are currently configured (for
instance if you used defaults in /etc/fstab) located in: /proc/mounts on most
Linux hosts.
The options should likely be referred to from either /proc/mounts, or
/etc/mtab - and of course in the man pages mkfs.{your_filesystem_choice).
Thanks, but this isn't quite what I'm looking for -
Are you looking for tune2fs (probably the -l flag)
or xfs_info?
I don't think there is anything cross filesystem
Suppose you're running an application on some filesystem, and you want to move
it to another filesystem. You have to ask yourself what are the differences
between these filesystems, and will my application still be supported on the
new filesystem? Now suppose you're the sysadmin of a fileserver, and you
provide a network filesystem to a bunch of other sysadmins. You don't
necessarily know what their applications are, but you're going to offer
another type of filesystem as a service to them, and you want to inform them,
for which purposes your new filesystem is well suited, and which are not
supported.
The obvious feature that jumps out at everyone is locking. If the old
filesystem is NFS and the new filesystem is a distributed filesystem (gluster,
ceph, gpfs, etc) then the concept of file locking can in some cases be
different from the old filesystem. Some applications may care about this.
Anothe feature that I can point at is change notification events (for example
inotify). This is definitely supported on ext4, xfs, and I think NFS. It's
definitely not supported on certain distributed filesystems (perhaps all
distributed filesystems).
I swear I saw a list of feature flags once before, while examining the
differences between extfs, xfs, and btrfs. So you could easily compare the
features supported by the various filesystems, and then you could easily
identify what types of applications you could support on any given filesystem.
Only I don't recall how to retrieve that list, and I'm not having any luck
googling for it. _______________________________________________ Tech mailing
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