Make up your mind. You want sync. You don't want sync. There is no reason to renew a subscription every 15 minutes. Stop doing that and this problem goes away.
On Oct 30, 2013, at 12:58 PM, Launchpad Bug Tracker <[email protected]> wrote: > You have been subscribed to a public bug by Till Kamppeter (till-kamppeter): > > cupsd calls fsync() on /etc/subscriptions.conf.N every 14~15 minutes. > This causes the hard disk to wake up soon after it spins down. > Subscription renewal is from indicator-printers every 15 minutes. > > I think we don't need cupsdRemoveFile() to always overwrite data and do a > fsync() for this file. Currently only Precise is confirmed to be affected. > Saucy seems not having the same issue according to > (http://bazaar.launchpad.net/~ubuntu-branches/ubuntu/saucy/cups/saucy/view/head:/scheduler/file.c#L149) > > ---- block_dump from the kernel ---- > <7>[19935.646436] cupsd(1066): dirtied inode 15336755 (subscriptions.conf.N) > on sda3 > <7>[19935.646673] cupsd(1066): WRITE block 352753016 on sda3 (8 sectors) > <7>[19935.646755] cupsd(1066): dirtied inode 15335603 (?) on sda3 > <7>[19935.646763] cupsd(1066): dirtied inode 15335603 (?) on sda3 > <7>[19935.646776] cupsd(1066): WRITE block 352701128 on sda3 (8 sectors) > <7>[20774.607856] cupsd(1066): dirtied inode 15335603 (subscriptions.conf.N) > on sda3 > <7>[20774.608034] cupsd(1066): WRITE block 352862776 on sda3 (8 sectors) > <7>[20774.608113] cupsd(1066): dirtied inode 15335607 (?) on sda3 > <7>[20774.608120] cupsd(1066): dirtied inode 15335607 (?) on sda3 > <7>[20774.608133] cupsd(1066): WRITE block 352753008 on sda3 (8 sectors) > <7>[21613.569033] cupsd(1066): dirtied inode 15335607 (subscriptions.conf.N) > on sda3 > <7>[21613.569257] cupsd(1066): WRITE block 352753024 on sda3 (8 sectors) > <7>[21613.569345] cupsd(1066): dirtied inode 15336755 (?) on sda3 > <7>[21613.569353] cupsd(1066): dirtied inode 15336755 (?) on sda3 > <7>[21613.569367] cupsd(1066): WRITE block 352753016 on sda3 (8 sectors) > > ---- cups: scheduler/file.c ---- > int /* O - 0 on success, -1 on error */ > cupsdCloseCreatedConfFile( > cups_file_t *fp, /* I - File to close */ > const char *filename) /* I - Filename */ > { > ... > snprintf(newfile, sizeof(newfile), "%s.N", filename); > snprintf(oldfile, sizeof(oldfile), "%s.O", filename); > > if ((cupsdRemoveFile(oldfile) && errno != ENOENT) || > (rename(filename, oldfile) && errno != ENOENT) || > rename(newfile, filename)) > { > cupsdLogMessage(CUPSD_LOG_ERROR, "Unable to finalize \"%s\": %s", > filename, strerror(errno)); > return (-1); > } > > return (0); > } > > int /* O - 0 on success, -1 on error */ > cupsdRemoveFile(const char *filename) /* I - File to remove */ > { > ... > /* > * Overwrite the file 7 times with 0xF6, 0x00, 0xFF, random, 0x00, 0xFF, > * and more random data. > */ > > memset(buffer, 0xF6, sizeof(buffer)); > if (overwrite_data(fd, buffer, sizeof(buffer), (int)info.st_size)) > { > close(fd); > return (-1); > } > ... > } > > static int /* O - 0 on success, -1 on error */ > overwrite_data(int fd, /* I - File descriptor */ > const char *buffer, /* I - Buffer to write */ > int bufsize, /* I - Size of buffer */ > int filesize) /* I - Size of file */ > { > int bytes; /* Bytes to write/written */ > > /* > * Start at the beginning of the file... > */ > > if (lseek(fd, 0, SEEK_SET) < 0) > return (-1); > > /* > * Fill the file with the provided data... > */ > > while (filesize > 0) > { > if (filesize > bufsize) > bytes = bufsize; > else > bytes = filesize; > > if ((bytes = write(fd, buffer, bytes)) < 0) > return (-1); > > filesize -= bytes; > } > > /* > * Force the changes to disk... > */ > > return (fsync(fd)); > } > > ---- indicator-printers-service.c ---- > #define NOTIFY_LEASE_DURATION (15 * 60) > > int main (int argc, char *argv[]) > { > ... > g_timeout_add_seconds (NOTIFY_LEASE_DURATION - 60, > renew_subscription_timeout, > &subscription_id); > ... > } > > ** Affects: ubuntu-power-consumption > Importance: Undecided > Status: New > > ** Affects: cups (Ubuntu) > Importance: Undecided > Status: New > > -- > cupsd wakes up the hard disk every 14 minutes > https://bugs.launchpad.net/bugs/1244205 > You received this bug notification because you are subscribed to the bug > report. _________________________________________________________ Michael Sweet, Senior Printing System Engineer, PWG Chair -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1244205 Title: cupsd wakes up the hard disk every 14 minutes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-consumption/+bug/1244205/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
