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journal: when copying journal file to undo NOCOW flag, go via fd

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We have the journal file open already, hence reference it via the fd
insted of the file name. After all, some other tool might have
renamed/deleted it already.

Let's not actually reuse the fd though, since we want a separate file
offset for the copying, hence just make it simply and reopen via
/proc/self/fd/.

Follow-up for d71ece3f0b
This commit is contained in:
Lennart Poettering 2022-02-02 15:21:27 +01:00
parent be496d6a9b
commit 5d04cec867
1 changed files with 1 additions and 1 deletions
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src/journal/managed-journal-file.c
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@ -192,7 +192,7 @@ static void managed_journal_file_set_offline_internal(ManagedJournalFile *f) {
log_debug_errno(r, "Failed to re-enable copy-on-write for %s: %m, rewriting file", f->file->path);
r = copy_file_atomic(f->file->path, f->file->path, f->file->mode, 0, FS_NOCOW_FL, COPY_REPLACE | COPY_FSYNC | COPY_HOLES);
r = copy_file_atomic(FORMAT_PROC_FD_PATH(f->file->fd), f->file->path, f->file->mode, 0, FS_NOCOW_FL, COPY_REPLACE | COPY_FSYNC | COPY_HOLES);
if (r < 0) {
log_debug_errno(r, "Failed to rewrite %s: %m", f->file->path);
continue;