| commit | 65c894ff16a220a372ab41a11f3865f2de518c9e | |
| author | Matthew Dillon <dillon@apollo.backplane.com> | |
| Sat, 17 Mar 2018 08:20:36 +0000 (17 01:20 -0700) | ||
| committer | Matthew Dillon <dillon@apollo.backplane.com> | |
| Sat, 17 Mar 2018 08:31:35 +0000 (17 01:31 -0700) | ||
| tree | 19a24ce41bb1981d2afdb8edc7ae914a233fca45 | treesnapshot (tar.gz zip) |
| parent | 68b321c1c2fcb76069594715a2a617f08aeb59ec | commitdiff |
hammer - Fix bugs, fix serious snapshot bug, flush adjustments
* Make sure we only flush the volume header for a general sync request
and not for a fsync() on /.
* Fix more lock order reversals when translating directory entries
to inodes.
* Separate out spmp elements into their own list to make umount ordering
easier.
* Flush in three stages.
(1) flush dirty filesystem inodes
(2) flush PFS meta-data topology up to the filesystem inodes.
(3) flush the volume root and its meta-data up to the PFS inodes.
This is staging for later sync concurrency improvements.
* Fix a bug where creating enough snapshots (more than 4 total PFSs)
causes some PFSs to lose an important flag in their blockref, which
causes flushes to stop working properly on that PFS.
* Make sure we only flush the volume header for a general sync request
and not for a fsync() on /.
* Fix more lock order reversals when translating directory entries
to inodes.
* Separate out spmp elements into their own list to make umount ordering
easier.
* Flush in three stages.
(1) flush dirty filesystem inodes
(2) flush PFS meta-data topology up to the filesystem inodes.
(3) flush the volume root and its meta-data up to the PFS inodes.
This is staging for later sync concurrency improvements.
* Fix a bug where creating enough snapshots (more than 4 total PFSs)
causes some PFSs to lose an important flag in their blockref, which
causes flushes to stop working properly on that PFS.