Re: [man-pages RFC PATCH v4] statx, inode: document the new STATX_INO_VERSION field

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



* Jeff Layton:

> To do this we'd need 2 64-bit fields in the on-disk and in-memory 
> superblocks for ext4, xfs and btrfs. On the first mount after a crash,
> the filesystem would need to bump s_version_max by the significant
> increment (2^40 bits or whatever). On a "clean" mount, it wouldn't need
> to do that.
>
> Would there be a way to ensure that the new s_version_max value has made
> it to disk? Bumping it by a large value and hoping for the best might be
> ok for most cases, but there are always outliers, so it might be
> worthwhile to make an i_version increment wait on that if necessary. 

How common are unclean shutdowns in practice?  Do ex64/XFS/btrfs keep
counters in the superblocks for journal replays that can be read easily?

Several useful i_version applications could be negatively impacted by
frequent i_version invalidation.

Thanks,
Florian




[Index of Archives]     [Linux Ext4 Filesystem]     [Union Filesystem]     [Filesystem Testing]     [Ceph Users]     [Ecryptfs]     [NTFS 3]     [AutoFS]     [Kernel Newbies]     [Share Photos]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux Cachefs]     [Reiser Filesystem]     [Linux RAID]     [NTFS 3]     [Samba]     [Device Mapper]     [CEPH Development]

  Powered by Linux