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Disable and enable ext4 journaling ?
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If I disable the journaling function of an EXT4-filesystem using the command tune2fs -O ^has_journal /dev/sda and enable it after the next start, will the data saved on the harddisk remain unaffected or are they lost ?
(Ubuntu 16.04 LTS)
ubuntu ext4 journaling
asked Oct 5 '17 at 22:47
Tim BremerTim Bremer
63 bronze badges
bumped to the homepage by Community♦ 2 hours ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
|
show 1 more comment
If I disable the journaling function of an EXT4-filesystem using the command tune2fs -O ^has_journal /dev/sda and enable it after the next start, will the data saved on the harddisk remain unaffected or are they lost ?
(Ubuntu 16.04 LTS)
ubuntu ext4 journaling
asked Oct 5 '17 at 22:47
Tim BremerTim Bremer
63 bronze badges
bumped to the homepage by Community♦ 2 hours ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
1
Journals are meta-data; are you planning on an orderly reboot (close files, unmount filesystem), or some sort of interrupted-write testing?
– Jeff Schaller♦
Oct 6 '17 at 1:02
In fact I am trying to spin down my Western Digital harddisks with the program 'hd-idle', which tells me that there still are some read/write access, just a few Kilobytes per minute. But with atop, iotop, htop, iostat etc. I haven't been able to detect the cause. So I thought about disabling the journal, but quite probably I am going to enable it again after the short test. (root device is a ssd, sda and sdb belong to raid1_a, sdc and sdb to raid1_b and raid_a and raid_b form one volume group).
– Tim Bremer
Oct 6 '17 at 7:33
Doeshd-idlestill show unexplained read and write accesses when your disk is plugged in but unmounted?
– dhag
Oct 6 '17 at 14:22
Yes, it indeed shows r/w-accesses when it is unmounted, so it doesn't look like a journaling issue, but I am running out of ideas what else could be the cause. I also can hear a 'click' sound every ca. 20 seconds, which I can't hear when I am just in the BIOS. smartctl (long test) doesn't show anything special.
– Tim Bremer
Oct 6 '17 at 19:09
Typical output is:root@ubuntu:~# hd-idle -i 0 -a sda -i 300 -a sdb -i 300 -a sdc -i 300 -a sdd -i 300 -dprobing sda: reads: 183794, writes: 242probing sdb: reads: 163945, writes: 242probing sdc: reads: 146075, writes: 80probing sdd: reads: 144003, writes: 80probing sda: reads: 183794, writes: 242probing sdb: reads: 163945, writes: 242probing sdc: reads: 146075, writes: 80probing sdd: reads: 144003, writes: 80probing sda: reads: 183794, writes: 242probing sdb: reads: 163945, writes: 242probing sdc: rea...
– Tim Bremer
Oct 6 '17 at 19:09
|
show 1 more comment
If I disable the journaling function of an EXT4-filesystem using the command tune2fs -O ^has_journal /dev/sda and enable it after the next start, will the data saved on the harddisk remain unaffected or are they lost ?
(Ubuntu 16.04 LTS)
ubuntu ext4 journaling
asked Oct 5 '17 at 22:47
Tim BremerTim Bremer
63 bronze badges
If I disable the journaling function of an EXT4-filesystem using the command tune2fs -O ^has_journal /dev/sda and enable it after the next start, will the data saved on the harddisk remain unaffected or are they lost ?
(Ubuntu 16.04 LTS)
ubuntu ext4 journaling
ubuntu ext4 journaling
asked Oct 5 '17 at 22:47
Tim BremerTim Bremer
63 bronze badges
asked Oct 5 '17 at 22:47
Tim BremerTim Bremer
63 bronze badges
asked Oct 5 '17 at 22:47
Tim BremerTim Bremer
63 bronze badges
asked Oct 5 '17 at 22:47
Tim BremerTim Bremer
63 bronze badges
asked Oct 5 '17 at 22:47
Tim BremerTim Bremer
63 bronze badges
63 bronze badges
bumped to the homepage by Community♦ 2 hours ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
bumped to the homepage by Community♦ 2 hours ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
1
Journals are meta-data; are you planning on an orderly reboot (close files, unmount filesystem), or some sort of interrupted-write testing?
– Jeff Schaller♦
Oct 6 '17 at 1:02
In fact I am trying to spin down my Western Digital harddisks with the program 'hd-idle', which tells me that there still are some read/write access, just a few Kilobytes per minute. But with atop, iotop, htop, iostat etc. I haven't been able to detect the cause. So I thought about disabling the journal, but quite probably I am going to enable it again after the short test. (root device is a ssd, sda and sdb belong to raid1_a, sdc and sdb to raid1_b and raid_a and raid_b form one volume group).
– Tim Bremer
Oct 6 '17 at 7:33
Doeshd-idlestill show unexplained read and write accesses when your disk is plugged in but unmounted?
– dhag
Oct 6 '17 at 14:22
Yes, it indeed shows r/w-accesses when it is unmounted, so it doesn't look like a journaling issue, but I am running out of ideas what else could be the cause. I also can hear a 'click' sound every ca. 20 seconds, which I can't hear when I am just in the BIOS. smartctl (long test) doesn't show anything special.
– Tim Bremer
Oct 6 '17 at 19:09
Typical output is:root@ubuntu:~# hd-idle -i 0 -a sda -i 300 -a sdb -i 300 -a sdc -i 300 -a sdd -i 300 -dprobing sda: reads: 183794, writes: 242probing sdb: reads: 163945, writes: 242probing sdc: reads: 146075, writes: 80probing sdd: reads: 144003, writes: 80probing sda: reads: 183794, writes: 242probing sdb: reads: 163945, writes: 242probing sdc: reads: 146075, writes: 80probing sdd: reads: 144003, writes: 80probing sda: reads: 183794, writes: 242probing sdb: reads: 163945, writes: 242probing sdc: rea...
– Tim Bremer
Oct 6 '17 at 19:09
|
show 1 more comment
1
Journals are meta-data; are you planning on an orderly reboot (close files, unmount filesystem), or some sort of interrupted-write testing?
– Jeff Schaller♦
Oct 6 '17 at 1:02
In fact I am trying to spin down my Western Digital harddisks with the program 'hd-idle', which tells me that there still are some read/write access, just a few Kilobytes per minute. But with atop, iotop, htop, iostat etc. I haven't been able to detect the cause. So I thought about disabling the journal, but quite probably I am going to enable it again after the short test. (root device is a ssd, sda and sdb belong to raid1_a, sdc and sdb to raid1_b and raid_a and raid_b form one volume group).
– Tim Bremer
Oct 6 '17 at 7:33
Doeshd-idlestill show unexplained read and write accesses when your disk is plugged in but unmounted?
– dhag
Oct 6 '17 at 14:22
Yes, it indeed shows r/w-accesses when it is unmounted, so it doesn't look like a journaling issue, but I am running out of ideas what else could be the cause. I also can hear a 'click' sound every ca. 20 seconds, which I can't hear when I am just in the BIOS. smartctl (long test) doesn't show anything special.
– Tim Bremer
Oct 6 '17 at 19:09
Typical output is:root@ubuntu:~# hd-idle -i 0 -a sda -i 300 -a sdb -i 300 -a sdc -i 300 -a sdd -i 300 -dprobing sda: reads: 183794, writes: 242probing sdb: reads: 163945, writes: 242probing sdc: reads: 146075, writes: 80probing sdd: reads: 144003, writes: 80probing sda: reads: 183794, writes: 242probing sdb: reads: 163945, writes: 242probing sdc: reads: 146075, writes: 80probing sdd: reads: 144003, writes: 80probing sda: reads: 183794, writes: 242probing sdb: reads: 163945, writes: 242probing sdc: rea...
– Tim Bremer
Oct 6 '17 at 19:09
1
1
Journals are meta-data; are you planning on an orderly reboot (close files, unmount filesystem), or some sort of interrupted-write testing?
– Jeff Schaller♦
Oct 6 '17 at 1:02
Journals are meta-data; are you planning on an orderly reboot (close files, unmount filesystem), or some sort of interrupted-write testing?
– Jeff Schaller♦
Oct 6 '17 at 1:02
In fact I am trying to spin down my Western Digital harddisks with the program 'hd-idle', which tells me that there still are some read/write access, just a few Kilobytes per minute. But with atop, iotop, htop, iostat etc. I haven't been able to detect the cause. So I thought about disabling the journal, but quite probably I am going to enable it again after the short test. (root device is a ssd, sda and sdb belong to raid1_a, sdc and sdb to raid1_b and raid_a and raid_b form one volume group).
– Tim Bremer
Oct 6 '17 at 7:33
In fact I am trying to spin down my Western Digital harddisks with the program 'hd-idle', which tells me that there still are some read/write access, just a few Kilobytes per minute. But with atop, iotop, htop, iostat etc. I haven't been able to detect the cause. So I thought about disabling the journal, but quite probably I am going to enable it again after the short test. (root device is a ssd, sda and sdb belong to raid1_a, sdc and sdb to raid1_b and raid_a and raid_b form one volume group).
– Tim Bremer
Oct 6 '17 at 7:33
Does
hd-idle still show unexplained read and write accesses when your disk is plugged in but unmounted?– dhag
Oct 6 '17 at 14:22
Does
hd-idle still show unexplained read and write accesses when your disk is plugged in but unmounted?– dhag
Oct 6 '17 at 14:22
Yes, it indeed shows r/w-accesses when it is unmounted, so it doesn't look like a journaling issue, but I am running out of ideas what else could be the cause. I also can hear a 'click' sound every ca. 20 seconds, which I can't hear when I am just in the BIOS. smartctl (long test) doesn't show anything special.
– Tim Bremer
Oct 6 '17 at 19:09
Yes, it indeed shows r/w-accesses when it is unmounted, so it doesn't look like a journaling issue, but I am running out of ideas what else could be the cause. I also can hear a 'click' sound every ca. 20 seconds, which I can't hear when I am just in the BIOS. smartctl (long test) doesn't show anything special.
– Tim Bremer
Oct 6 '17 at 19:09
Typical output is:
root@ubuntu:~# hd-idle -i 0 -a sda -i 300 -a sdb -i 300 -a sdc -i 300 -a sdd -i 300 -d probing sda: reads: 183794, writes: 242 probing sdb: reads: 163945, writes: 242 probing sdc: reads: 146075, writes: 80 probing sdd: reads: 144003, writes: 80 probing sda: reads: 183794, writes: 242 probing sdb: reads: 163945, writes: 242 probing sdc: reads: 146075, writes: 80 probing sdd: reads: 144003, writes: 80 probing sda: reads: 183794, writes: 242 probing sdb: reads: 163945, writes: 242 probing sdc: rea...– Tim Bremer
Oct 6 '17 at 19:09
Typical output is:
root@ubuntu:~# hd-idle -i 0 -a sda -i 300 -a sdb -i 300 -a sdc -i 300 -a sdd -i 300 -d probing sda: reads: 183794, writes: 242 probing sdb: reads: 163945, writes: 242 probing sdc: reads: 146075, writes: 80 probing sdd: reads: 144003, writes: 80 probing sda: reads: 183794, writes: 242 probing sdb: reads: 163945, writes: 242 probing sdc: reads: 146075, writes: 80 probing sdd: reads: 144003, writes: 80 probing sda: reads: 183794, writes: 242 probing sdb: reads: 163945, writes: 242 probing sdc: rea...– Tim Bremer
Oct 6 '17 at 19:09
|
show 1 more comment
1 Answer
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As already told tools like atop, iotop, htop, iostat haven't been were helpful.
blktrace -d /dev/sda -o - | blkparse -i - showed me that parted, smartctl and one other process (udevd ?) accessed the disc.
Strangely enough no config-file had smartctl enabled....
auditd finally helped me to track down the troublemaker, revealing the correlation between the start of smartctl and webmin. webmin checks periodically the temperature of the harddisks, this option can be disabled in Webmin --> Webmin --> Configuration --> Background Status Collection. One should also disable the options Collect system status in background and Collect available package updates.
answered Oct 9 '17 at 19:16
Tim BremerTim Bremer
63 bronze badges
add a comment |
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As already told tools like atop, iotop, htop, iostat haven't been were helpful.
blktrace -d /dev/sda -o - | blkparse -i - showed me that parted, smartctl and one other process (udevd ?) accessed the disc.
Strangely enough no config-file had smartctl enabled....
auditd finally helped me to track down the troublemaker, revealing the correlation between the start of smartctl and webmin. webmin checks periodically the temperature of the harddisks, this option can be disabled in Webmin --> Webmin --> Configuration --> Background Status Collection. One should also disable the options Collect system status in background and Collect available package updates.
answered Oct 9 '17 at 19:16
Tim BremerTim Bremer
63 bronze badges
add a comment |
As already told tools like atop, iotop, htop, iostat haven't been were helpful.
blktrace -d /dev/sda -o - | blkparse -i - showed me that parted, smartctl and one other process (udevd ?) accessed the disc.
Strangely enough no config-file had smartctl enabled....
auditd finally helped me to track down the troublemaker, revealing the correlation between the start of smartctl and webmin. webmin checks periodically the temperature of the harddisks, this option can be disabled in Webmin --> Webmin --> Configuration --> Background Status Collection. One should also disable the options Collect system status in background and Collect available package updates.
answered Oct 9 '17 at 19:16
Tim BremerTim Bremer
63 bronze badges
add a comment |
As already told tools like atop, iotop, htop, iostat haven't been were helpful.
blktrace -d /dev/sda -o - | blkparse -i - showed me that parted, smartctl and one other process (udevd ?) accessed the disc.
Strangely enough no config-file had smartctl enabled....
auditd finally helped me to track down the troublemaker, revealing the correlation between the start of smartctl and webmin. webmin checks periodically the temperature of the harddisks, this option can be disabled in Webmin --> Webmin --> Configuration --> Background Status Collection. One should also disable the options Collect system status in background and Collect available package updates.
answered Oct 9 '17 at 19:16
Tim BremerTim Bremer
63 bronze badges
As already told tools like atop, iotop, htop, iostat haven't been were helpful.
blktrace -d /dev/sda -o - | blkparse -i - showed me that parted, smartctl and one other process (udevd ?) accessed the disc.
Strangely enough no config-file had smartctl enabled....
auditd finally helped me to track down the troublemaker, revealing the correlation between the start of smartctl and webmin. webmin checks periodically the temperature of the harddisks, this option can be disabled in Webmin --> Webmin --> Configuration --> Background Status Collection. One should also disable the options Collect system status in background and Collect available package updates.
answered Oct 9 '17 at 19:16
Tim BremerTim Bremer
63 bronze badges
answered Oct 9 '17 at 19:16
Tim BremerTim Bremer
63 bronze badges
answered Oct 9 '17 at 19:16
Tim BremerTim Bremer
63 bronze badges
answered Oct 9 '17 at 19:16
Tim BremerTim Bremer
63 bronze badges
63 bronze badges
add a comment |
add a comment |
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1
Journals are meta-data; are you planning on an orderly reboot (close files, unmount filesystem), or some sort of interrupted-write testing?
– Jeff Schaller♦
Oct 6 '17 at 1:02
In fact I am trying to spin down my Western Digital harddisks with the program 'hd-idle', which tells me that there still are some read/write access, just a few Kilobytes per minute. But with atop, iotop, htop, iostat etc. I haven't been able to detect the cause. So I thought about disabling the journal, but quite probably I am going to enable it again after the short test. (root device is a ssd, sda and sdb belong to raid1_a, sdc and sdb to raid1_b and raid_a and raid_b form one volume group).
– Tim Bremer
Oct 6 '17 at 7:33
Does
hd-idlestill show unexplained read and write accesses when your disk is plugged in but unmounted?– dhag
Oct 6 '17 at 14:22
Yes, it indeed shows r/w-accesses when it is unmounted, so it doesn't look like a journaling issue, but I am running out of ideas what else could be the cause. I also can hear a 'click' sound every ca. 20 seconds, which I can't hear when I am just in the BIOS. smartctl (long test) doesn't show anything special.
– Tim Bremer
Oct 6 '17 at 19:09
Typical output is:
root@ubuntu:~# hd-idle -i 0 -a sda -i 300 -a sdb -i 300 -a sdc -i 300 -a sdd -i 300 -dprobing sda: reads: 183794, writes: 242probing sdb: reads: 163945, writes: 242probing sdc: reads: 146075, writes: 80probing sdd: reads: 144003, writes: 80probing sda: reads: 183794, writes: 242probing sdb: reads: 163945, writes: 242probing sdc: reads: 146075, writes: 80probing sdd: reads: 144003, writes: 80probing sda: reads: 183794, writes: 242probing sdb: reads: 163945, writes: 242probing sdc: rea...– Tim Bremer
Oct 6 '17 at 19:09