Re: [CentOS] FSCK on mounted filesystem (LVM/DRBD)?
--On Thursday, April 12, 2012 10:38:56 PM +0200 Dennis Jacobfeuerborn wrote: > On 04/12/2012 08:17 PM, Devin Reade wrote: >> However, if you're using pacemaker the RA (IIRC) has the option >> of doing an 'fsck -p' before mounting. [...] > > "doing an 'fsck -p' before mounting" still means you have to take the fs > offline though so this doesn't really change anything. Correct; it still has to be offline. I was mentioning it as a possible alternative for the OP's use case if this is more than just a "one of". On re-reading the original message, though, it sounds like it might just be bare DRBD rather than in combination with pacemaker. Devin ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] FSCK on mounted filesystem (LVM/DRBD)?
On 04/12/2012 08:17 PM, Devin Reade wrote: > --On Thursday, April 12, 2012 03:17:37 PM +0200 Dennis Jacobfeuerborn > wrote: > >> On 04/12/2012 09:50 AM, Rafał Radecki wrote: >>> >>> I have two running servers (drbd primary, drbd secondary). When there is >>> a problem with one of them we switch to the second one. [...] >>> >>> Is there a way to make fsck -a on mounted filesystem for ext3? >> >> No. None of the popular Filesystems support online fsck. > > However, if you're using pacemaker the RA (IIRC) has the option > of doing an 'fsck -p' before mounting. OTOH, since an fsck has > no predicatable run time limit, a long fsck might cause a > 'failed start' condition, causing a cascade from one node to > another to another ... > > (more details on this mechanism are probably more appropriate to the > applicable HA lists) "doing an 'fsck -p' before mounting" still means you have to take the fs offline though so this doesn't really change anything. Regards, Dennis ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] FSCK on mounted filesystem (LVM/DRBD)?
--On Thursday, April 12, 2012 03:17:37 PM +0200 Dennis Jacobfeuerborn wrote: > On 04/12/2012 09:50 AM, Rafał Radecki wrote: >> >> I have two running servers (drbd primary, drbd secondary). When there is >> a problem with one of them we switch to the second one. [...] >> >> Is there a way to make fsck -a on mounted filesystem for ext3? > > No. None of the popular Filesystems support online fsck. However, if you're using pacemaker the RA (IIRC) has the option of doing an 'fsck -p' before mounting. OTOH, since an fsck has no predicatable run time limit, a long fsck might cause a 'failed start' condition, causing a cascade from one node to another to another ... (more details on this mechanism are probably more appropriate to the applicable HA lists) Devin ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] FSCK on mounted filesystem (LVM/DRBD)?
On 04/12/2012 09:50 AM, Rafał Radecki wrote: > Hi All. > > I have two running servers (drbd primary, drbd secondary). When there is a > problem with one of them we switch to the second one. Currently on the > /dev/drbd0 (it has /xxx ext3 filesystem directly on it) we have some > filesystem problems (after fsck -n). I would like to correct these errors > but the filesystem should be unmounted first (I would like to avoid it if > possible). > > Is there a way to make fsck -a on mounted filesystem for ext3? My setup is: No. None of the popular Filesystems support online fsck. Regards, Dennis ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
