search

plfs / plfs-core

LANL no longer develops PLFS. Feel free to fork and develop as you wish.
41 stars 36 forks source link

Index files aren't sync'd when user calls plfs_sync #349

Open brettkettering opened 10 years ago

brettkettering commented 10 years ago

John Bent noted that it was his understanding that index files aren't getting sync'd when user calls plfs_sync. Everything needs to be synced to storage on plfs_sync, not just data.

johnbent commented 10 years ago

Michael Kukat first noticed this and is interested in this.

On Apr 9, 2014, at 10:53 AM, Brett Kettering notifications@github.com wrote:

John Bent noted that it was his understanding that index files aren't getting sync'd when user calls plfs_sync. Everything needs to be synced to storage on plfs_sync, not just data.

— Reply to this email directly or view it on GitHub.

johnbent commented 10 years ago

Hi,

i had a quick look into the sources and it looks like the index files should also be flushed&synced, so i'm not 100% sure if there really is an issue in 2.5. At least the same test (crashing one node during writing to a shared file with known sync intervals, so the other node can take over a at a safe position before where the crashed one left) worked fine with 2.3. Didn't perform enough test runs with 2.3 for good statistics, but for 2.5, i had 2 or 3 runs and the index files of the crashed node always were 0 bytes afterwards, the file was not readable.

...Michael

Am 09.04.2014 17:15, schrieb John Bent:

Michael Kukat first noticed this and is interested in this.

On Apr 9, 2014, at 10:53 AM, Brett Kettering <notifications@github.com mailto:notifications@github.com> wrote:

John Bent noted that it was his understanding that index files aren't getting sync'd when user calls plfs_sync. Everything needs to be synced to storage on plfs_sync, not just data.

— Reply to this email directly or view it on GitHub https://github.com/plfs/plfs-core/issues/349.

signature german Mit freundlichen Grüßen

Michael Kukat Senior Software Developer

GRAU DATA AG Marie-Curie-Str. 19 73529 Schwäbisch Gmünd

E-Mail: Michael.Kukat@graudata.com mailto:michael.kukat@graudata.com Tel.: +49 7171 187-0 Fax: +49 7171 187-250

GRAU DATA - YOU DATA, YOUR CONTROL

Amtsgericht ULM: HRB 701807; USt-ID-Nr.: DE210200743; Vorstand: Herbert Grau, CTO Ulrich Lechner; Aufsichtsratsvorsitzender: Friedhelm Steinhilber