How can I compress /usr and mount it on boot?
I run sudo mksquashfs /usr /usr_squash/usr.sfs -b 65536 -comp xz
I add to fstab:
/usr_squash/usr.sfs /usr_squash/sq squashfs loop,ro 0 0
overlay /usr overlay defaults,lowerdir=/usr_squash/sq,upperdir=/usr_squash/upd,workdir=/usr_squash/tmp 0 0
Of course, mount points sq, upd and tmp are created, too.
With default kernel, I have the following error: failed: No such device which is, obviously, because overlayfs is a kernel [M]odule, not a [*].
With a custom kernel, overlayfs starts but produces the following error:
overlayfs: failed to resolve '/usr_squash/upd': -2
mount: mounting overlay on /root/usr failed: No such file or directory
overlayfs: upper fs is r/o, try multi-lower layers mount
Setting the directory relative to Initial Ramdrive root, not the main root (upperdir=/root/usr_squash/upd instead of upperdir=/usr_squash/upd) does not help. And even if, I can't rebuild a custom kernel on every update.
So, what's the best way to mount compressed /usr? I don't want to break the auto-update, and I don't want auto-update break my system. Should I write a custom hook and run update-initramfs -u -k all? But how?
drivers kernel fstab
edited 7 hours ago
terdon♦
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I run sudo mksquashfs /usr /usr_squash/usr.sfs -b 65536 -comp xz
I add to fstab:
/usr_squash/usr.sfs /usr_squash/sq squashfs loop,ro 0 0
overlay /usr overlay defaults,lowerdir=/usr_squash/sq,upperdir=/usr_squash/upd,workdir=/usr_squash/tmp 0 0
Of course, mount points sq, upd and tmp are created, too.
With default kernel, I have the following error: failed: No such device which is, obviously, because overlayfs is a kernel [M]odule, not a [*].
With a custom kernel, overlayfs starts but produces the following error:
overlayfs: failed to resolve '/usr_squash/upd': -2
mount: mounting overlay on /root/usr failed: No such file or directory
overlayfs: upper fs is r/o, try multi-lower layers mount
Setting the directory relative to Initial Ramdrive root, not the main root (upperdir=/root/usr_squash/upd instead of upperdir=/usr_squash/upd) does not help. And even if, I can't rebuild a custom kernel on every update.
So, what's the best way to mount compressed /usr? I don't want to break the auto-update, and I don't want auto-update break my system. Should I write a custom hook and run update-initramfs -u -k all? But how?
drivers kernel fstab
edited 7 hours ago
terdon♦
66.4k12138221
asked 7 hours ago
NickDoomNickDoom
264
New contributor
NickDoom is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
If one feels I said something wrong, blame my English, not my attitude :-/
– NickDoom
6 hours ago
Don't worry, you didn't do anything wrong. It's just that another user found that last sentence a bit aggressive, so I removed it. But no big deal at all. Welcome to the site!
– terdon♦
6 hours ago
add a comment |
I run sudo mksquashfs /usr /usr_squash/usr.sfs -b 65536 -comp xz
I add to fstab:
/usr_squash/usr.sfs /usr_squash/sq squashfs loop,ro 0 0
overlay /usr overlay defaults,lowerdir=/usr_squash/sq,upperdir=/usr_squash/upd,workdir=/usr_squash/tmp 0 0
Of course, mount points sq, upd and tmp are created, too.
With default kernel, I have the following error: failed: No such device which is, obviously, because overlayfs is a kernel [M]odule, not a [*].
With a custom kernel, overlayfs starts but produces the following error:
overlayfs: failed to resolve '/usr_squash/upd': -2
mount: mounting overlay on /root/usr failed: No such file or directory
overlayfs: upper fs is r/o, try multi-lower layers mount
Setting the directory relative to Initial Ramdrive root, not the main root (upperdir=/root/usr_squash/upd instead of upperdir=/usr_squash/upd) does not help. And even if, I can't rebuild a custom kernel on every update.
So, what's the best way to mount compressed /usr? I don't want to break the auto-update, and I don't want auto-update break my system. Should I write a custom hook and run update-initramfs -u -k all? But how?
drivers kernel fstab
edited 7 hours ago
terdon♦
66.4k12138221
asked 7 hours ago
NickDoomNickDoom
264
New contributor
NickDoom is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I run sudo mksquashfs /usr /usr_squash/usr.sfs -b 65536 -comp xz
I add to fstab:
/usr_squash/usr.sfs /usr_squash/sq squashfs loop,ro 0 0
overlay /usr overlay defaults,lowerdir=/usr_squash/sq,upperdir=/usr_squash/upd,workdir=/usr_squash/tmp 0 0
Of course, mount points sq, upd and tmp are created, too.
With default kernel, I have the following error: failed: No such device which is, obviously, because overlayfs is a kernel [M]odule, not a [*].
With a custom kernel, overlayfs starts but produces the following error:
overlayfs: failed to resolve '/usr_squash/upd': -2
mount: mounting overlay on /root/usr failed: No such file or directory
overlayfs: upper fs is r/o, try multi-lower layers mount
Setting the directory relative to Initial Ramdrive root, not the main root (upperdir=/root/usr_squash/upd instead of upperdir=/usr_squash/upd) does not help. And even if, I can't rebuild a custom kernel on every update.
So, what's the best way to mount compressed /usr? I don't want to break the auto-update, and I don't want auto-update break my system. Should I write a custom hook and run update-initramfs -u -k all? But how?
drivers kernel fstab
drivers kernel fstab
edited 7 hours ago
terdon♦
66.4k12138221
asked 7 hours ago
NickDoomNickDoom
264
New contributor
NickDoom is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 7 hours ago
terdon♦
66.4k12138221
asked 7 hours ago
NickDoomNickDoom
264
New contributor
NickDoom is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 7 hours ago
terdon♦
66.4k12138221
edited 7 hours ago
terdon♦
66.4k12138221
edited 7 hours ago
terdon♦
66.4k12138221
66.4k12138221
asked 7 hours ago
NickDoomNickDoom
264
New contributor
NickDoom is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 7 hours ago
NickDoomNickDoom
264
asked 7 hours ago
NickDoomNickDoom
264
264
New contributor
NickDoom is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
NickDoom is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
NickDoom is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
If one feels I said something wrong, blame my English, not my attitude :-/
– NickDoom
6 hours ago
Don't worry, you didn't do anything wrong. It's just that another user found that last sentence a bit aggressive, so I removed it. But no big deal at all. Welcome to the site!
– terdon♦
6 hours ago
add a comment |
If one feels I said something wrong, blame my English, not my attitude :-/
– NickDoom
6 hours ago
Don't worry, you didn't do anything wrong. It's just that another user found that last sentence a bit aggressive, so I removed it. But no big deal at all. Welcome to the site!
– terdon♦
6 hours ago
If one feels I said something wrong, blame my English, not my attitude :-/
– NickDoom
6 hours ago
If one feels I said something wrong, blame my English, not my attitude :-/
– NickDoom
6 hours ago
Don't worry, you didn't do anything wrong. It's just that another user found that last sentence a bit aggressive, so I removed it. But no big deal at all. Welcome to the site!
– terdon♦
6 hours ago
Don't worry, you didn't do anything wrong. It's just that another user found that last sentence a bit aggressive, so I removed it. But no big deal at all. Welcome to the site!
– terdon♦
6 hours ago
add a comment |
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If one feels I said something wrong, blame my English, not my attitude :-/
– NickDoom
6 hours ago
Don't worry, you didn't do anything wrong. It's just that another user found that last sentence a bit aggressive, so I removed it. But no big deal at all. Welcome to the site!
– terdon♦
6 hours ago