Re: How did relatime get set on my Wheezy system?
Rhkramer, 4.4.2019 01:38 +0200: > What puzzles me is this -- when I look at /etc/fstab for some of the other > partitions that are already ext4 I see entries like this: > > # /var was on /dev/sdb8 during installation > UUID=874304c9-36c6-4572-909b-c4c75d13269a /varext4defaults > > 0 2 > > When I look at the same partition in /etc/mtab, I see this: > > /dev/sdb8 /var ext4 rw,relatime,user_xattr,barrier=1,data=ordered 0 0 > > What I don't understand, for example, is where and how relatime got set (and > maybe some of the other parameters). relatime is the default (unless you specify otherwise) man mount contains this: > relatime > [...] > Since Linux 2.6.30, the kernel defaults to the behavior provided by > this option (unless noatime was specified), and the strictatime option > is required to obtain traditional semantics. In addition, since > Linux 2.6.30, the file's last access time is always updated if it is > more than 1 day old. -- Regards mks
Re: How did relatime get set on my Wheezy system?
On Wednesday, April 03, 2019 08:06:37 PM bw wrote: > In-Reply-To: <201904031938.34134.rhkra...@gmail.com> > >What I don't understand, for example, is where and how relatime got set > >(and maybe some of the other parameters). > > On stretch system, man mount has under "FILESYSTEM-INDEPENDENT MOUNT > OPTIONS" a section about relatime: > > Since Linux 2.6.30, the kernel defaults to the behavior > provided by this option (unless noatime was specified), and > the strictatime option is required to obtain traditional > semantics. In addition, since Linux 2.6.30, the file's last > access time is always updated if it is more than 1 day old. > > >Finally (well, I have another question that I'll post separately), I'm > >assuming that I can include noatime in the /etc/fstab file I change the > >entry for the partition I am reformatting? (That is where noatime is set > >on my Jessie system.) > > I've used noatime in fstab for a long time that way. Check man mount and > see what wheezy says, not sure about the history there... Ahh, it says the same thing in Wheezy's man mount -- thanks!
Re: How did relatime get set on my Wheezy system?
In-Reply-To: <201904031938.34134.rhkra...@gmail.com> >UUID=874304c9-36c6-4572-909b-c4c75d13269a /var ext4 defaults 0 2 > >When I look at the same partition in /etc/mtab, I see this: > >/dev/sdb8 /var ext4 rw,relatime,user_xattr,barrier=1,data=ordered 0 0 > >What I don't understand, for example, is where and how relatime got set >(and maybe some of the other parameters). On stretch system, man mount has under "FILESYSTEM-INDEPENDENT MOUNT OPTIONS" a section about relatime: Since Linux 2.6.30, the kernel defaults to the behavior provided by this option (unless noatime was specified), and the strictatime option is required to obtain traditional semantics. In addition, since Linux 2.6.30, the file's last access time is always updated if it is more than 1 day old. >Finally (well, I have another question that I'll post separately), I'm >assuming that I can include noatime in the /etc/fstab file I change the >entry for the partition I am reformatting? (That is where noatime is set >on my Jessie system.) I've used noatime in fstab for a long time that way. Check man mount and see what wheezy says, not sure about the history there... L8r, bw
How did relatime get set on my Wheezy system?
Background: When I set up my Wheezy system, I reserved (and formatted) a FAT32 partition on one of my disks for a possible installation of Windows. I now want to reformat that partition to ext4 to use for other purposes. What puzzles me is this -- when I look at /etc/fstab for some of the other partitions that are already ext4 I see entries like this: # /var was on /dev/sdb8 during installation UUID=874304c9-36c6-4572-909b-c4c75d13269a /varext4defaults 0 2 When I look at the same partition in /etc/mtab, I see this: /dev/sdb8 /var ext4 rw,relatime,user_xattr,barrier=1,data=ordered 0 0 What I don't understand, for example, is where and how relatime got set (and maybe some of the other parameters). (Aside: I'd prefer to set noatime for the reformatted partition as it is on an SSD, and will be used for data, not executables.) I plan to reformat the disk with mkfs.ext4. Initially, when I set up the system, I used the Wheezy installer to partition and format the disks. I'm assuming that it used mkfs.ext4 to do the formatting. I looked at /etc/mke2fs.conf and did not see any reference to relatime. Finally (well, I have another question that I'll post separately), I'm assuming that I can include noatime in the /etc/fstab file I change the entry for the partition I am reformatting? (That is where noatime is set on my Jessie system.)
