Re: F33 BTRFS - Not enough swap space for hibernation [solved]

On Wed, Dec 9, 2020 at 5:36 AM Chris Murphy wrote: > Small clarification. 'chattr +C' to set the C file attribute is > 'nodatacow'. Since Btrfs is cow by default, it's generally OK to > assume cow unless this attribute is set. But there's a rather uncommon > and not highly recommended mount

Re: F33 BTRFS - Not enough swap space for hibernation [solved]

On Wed, Dec 9, 2020 at 5:31 AM Chris Murphy wrote: > > I referred you to man 5 btrfs about a list of limitations of swapfiles > on btrfs 10 days ago. > > https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org/message/XF7YO27N2XPWGLPMPUN76VFT3RW2KFYS/ > > It's important to

Re: F33 BTRFS - Not enough swap space for hibernation [solved]

On Wed, Dec 9, 2020 at 5:31 AM Chris Murphy wrote: > I referred you to man 5 btrfs about a list of limitations of swapfiles > on btrfs 10 days ago. > > https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org/message/XF7YO27N2XPWGLPMPUN76VFT3RW2KFYS/ Apologies, I missed

Re: F33 BTRFS - Not enough swap space for hibernation [solved]

On Tue, Dec 8, 2020 at 9:30 PM Qiyu Yan wrote: > Since swapfile should always be NOCOW, while doing snapshot the subvol > containing the file will definitely make it COW. You may want to put > swapfile to a separate subvol. > Yes, you are right. I just snapshotted my root, and restored the

Re: F33 BTRFS - Not enough swap space for hibernation [solved]

On Tue, Dec 8, 2020 at 11:14 AM Garry T. Williams wrote: > > On Tuesday, December 8, 2020 1:02:19 PM EST Sreyan Chakravarty wrote: > > How would you verify if a file is CoW in BTRFS? > > It's not btrfs-specific, but use the lsattr(1) command. E.g., > > garry@gtw$ lsattr

Re: F33 BTRFS - Not enough swap space for hibernation [solved]

On Tue, Dec 8, 2020 at 5:53 AM Sreyan Chakravarty wrote: > > On Mon, Dec 7, 2020 at 3:43 PM Chris Murphy wrote: >> >> >> This isn't a great location for a swapfile on btrfs because you can't ever >> snapshot /. > > > You never said why it was not possible to snapshot /. > > Why is that ? I

Re: F33 BTRFS - Not enough swap space for hibernation [solved]

On Tuesday, December 8, 2020 1:02:19 PM EST Sreyan Chakravarty wrote: > How would you verify if a file is CoW in BTRFS? It's not btrfs-specific, but use the lsattr(1) command. E.g., garry@gtw$ lsattr .local/share/akonadi/db_data/ibdata1 ---C

Re: F33 BTRFS - Not enough swap space for hibernation [solved]

On Tue, 8 Dec 2020, 9:30 pm Qiyu Yan, wrote: > Since swapfile should always be NOCOW, while doing snapshot the subvol > containing the file will definitely make it COW. You may want to put > swapfile to a separate subvol. > How would you verify if a file is CoW in BTRFS? >

Re: F33 BTRFS - Not enough swap space for hibernation [solved]

Sreyan Chakravarty 于2020年12月8日周二 下午8:53写道： > > On Mon, Dec 7, 2020 at 3:43 PM Chris Murphy wrote: >> >> >> This isn't a great location for a swapfile on btrfs because you can't ever >> snapshot /. > > > You never said why it was not possible to snapshot /. Since swapfile should always be NOCOW,

Re: F33 BTRFS - Not enough swap space for hibernation [solved]

On Mon, Dec 7, 2020 at 3:43 PM Chris Murphy wrote: > > This isn't a great location for a swapfile on btrfs because you can't ever > snapshot /. > You never said why it was not possible to snapshot /. Why is that ? -- Regards, Sreyan Chakravarty ___

Re: F33 BTRFS - Not enough swap space for hibernation [SOLVED]

On Mon, Dec 7, 2020 at 3:43 PM Chris Murphy wrote: > > The more predictable arrangement is a swap partition. > I did it. The problem was that btrfs_map_physical script will actually output the offset in bytes. I had to divide by my block size 4096. So the correct resume_offset is =

Re: F33 BTRFS - Not enough swap space for hibernation

On Mon, Dec 7, 2020 at 3:43 PM Chris Murphy wrote: > What happens if you manually swapon? What does cat /proc/cmdline show? > > Output of manual swapon: $ swapon -v -f /fedora.swap swapon: /fedora.swap: found signature [pagesize=4096, signature=swap] swapon: /fedora.swap: pagesize=4096,

Re: F33 BTRFS - Not enough swap space for hibernation

On Mon, Dec 7, 2020, 1:48 AM Sreyan Chakravarty wrote: > On Mon, Dec 7, 2020 at 1:58 PM Samuel Sieb wrote: > >> > >> > [ 269.976652] PM: Cannot find swap device, try swapon -a >> >> This is the important line. >> >> > What could be causing this ? I am not even getting error messages. > > >>

Re: F33 BTRFS - Not enough swap space for hibernation

On Mon, Dec 7, 2020 at 1:58 PM Samuel Sieb wrote: > On 12/7/20 12:13 AM, Sreyan Chakravarty wrote: > > Hibernation is not successful. > > > > This is what I get from 'dmesg': > > > > [ 269.976652] PM: Cannot find swap device, try swapon -a > > This is the important line. > > What could be

Re: F33 BTRFS - Not enough swap space for hibernation

On 12/7/20 12:13 AM, Sreyan Chakravarty wrote: Hibernation is not successful. This is what I get from 'dmesg': [  269.976652] PM: Cannot find swap device, try swapon -a This is the important line. What does 'Cannot get swap writer' mean ? It means that the previous thing failed. This

Re: F33 BTRFS - Not enough swap space for hibernation

On Mon, Dec 7, 2020 at 11:55 AM Samuel Sieb wrote: > > So this is why you aren't noticing any improvement from zram. You > aren't using any swap at all at this point. But more importantly, this > is why hibernation isn't working. You don't have any disk swap. What > happened to your swap

Re: F33 BTRFS - Not enough swap space for hibernation

On Mon, Dec 7, 2020 at 11:55 AM Samuel Sieb wrote: > > So this is why you aren't noticing any improvement from zram. You > aren't using any swap at all at this point. But more importantly, this > is why hibernation isn't working. You don't have any disk swap. What > happened to your swap

Re: F33 BTRFS - Not enough swap space for hibernation

On 12/6/20 10:17 PM, Sreyan Chakravarty wrote: On Mon, Dec 7, 2020 at 1:31 AM Chris Murphy > wrote: What do you get for 'swapon' ? # swapon NAME       TYPE      SIZE USED PRIO /dev/zram0 partition 3.8G   0B  100 So this is why you aren't noticing any

Re: F33 BTRFS - Not enough swap space for hibernation

On Mon, Dec 7, 2020 at 2:04 AM Chris Murphy wrote: > > I think a higher priority is supporting encrypted authenticated > hibernation images. And arguably it's needed for swap as well, because > there are all kinds of private user data that can be evicted to swap. > It's another advantage of swap

Re: F33 BTRFS - Not enough swap space for hibernation

On Mon, Dec 7, 2020 at 1:31 AM Chris Murphy wrote: > What do you get for 'swapon' ? > # swapon NAME TYPE SIZE USED PRIO /dev/zram0 partition 3.8G 0B 100 -- Regards, Sreyan Chakravarty ___ users mailing list --

Re: F33 BTRFS - Not enough swap space for hibernation

On Sun, Dec 6, 2020 at 11:42 PM Qiyu Yan wrote: > https://chrisdown.name/2018/01/02/in-defence-of-swap.html > > A good article answering why we need swap. > >> >> Yes I have read this. It is indeed a good article. > >>> Or another workaround, swapon the hibernation only file and swapoff all >

Re: F33 BTRFS - Not enough swap space for hibernation

On Sun, Dec 6, 2020 at 11:12 AM Qiyu Yan wrote: > > IDK, maybe just because no one is working on this. But changing PRIO may do > similar thing, page swap to zram and hibernat to disk. The kernel knows not to write a hibernation image to a swap device backed by zram. In fact it knows it needs

Re: F33 BTRFS - Not enough swap space for hibernation

On Sun, Dec 6, 2020 at 12:35 AM Sreyan Chakravarty wrote: > > On Sat, Dec 5, 2020 at 3:37 AM Ed Greshko wrote: >> >> Well, which "echo" command fails? >> >> Do these exist? >> >> /sys/power/disk >> /sys/power/state > > > $ ll /sys/power/disk > -rw-r--r--. 1 root root 4096 Dec 6 12:53

Re: F33 BTRFS - Not enough swap space for hibernation

Sreyan Chakravarty 于 2020年12月6日周日 下午6:23写道： > On Sun, Dec 6, 2020 at 1:29 PM Samuel Sieb wrote: > >> Are you actually using the swap? If you aren't, or only very little, >> then you aren't going to notice anything. It will only use RAM if >> you're swapping out pages. >> >> > Well I do have a

Re: F33 BTRFS - Not enough swap space for hibernation

On Sun, Dec 6, 2020 at 1:29 PM Samuel Sieb wrote: > Are you actually using the swap? If you aren't, or only very little, > then you aren't going to notice anything. It will only use RAM if > you're swapping out pages. > > Well I do have a lot of open tabs in chrome and firefox for testing. I

Re: F33 BTRFS - Not enough swap space for hibernation

On Sun, 6 Dec 2020, 2:00 pm Andras Simon, wrote: > > Don't think of it as swap. It's in-place compression of memory. > Thank you. Sir I rarely get such short concise and eloquent answers. I really wish naming was easier in computer science. In place memory compression is exactly what the zram

Re: F33 BTRFS - Not enough swap space for hibernation

2020-12-06 8:51 UTC+01:00, Sreyan Chakravarty : > On Sun, Dec 6, 2020 at 10:33 AM Tim via users > > wrote: > >> On Sat, 2020-12-05 at 17:45 -0700, Chris Murphy wrote: >> > There definitely is no free lunch with swap-on-zram, but it helps >> > quite a lot for most workloads. >> >> I'm curious how

Re: F33 BTRFS - Not enough swap space for hibernation

On 12/5/20 11:56 PM, Sreyan Chakravarty wrote: On Sun, Dec 6, 2020 at 11:13 AM Chris Murphy > wrote: https://fedoraproject.org/wiki/Changes/SwapOnZRAM#Detailed_Description Let

Re: F33 BTRFS - Not enough swap space for hibernation

On 12/5/20 11:49 PM, Sreyan Chakravarty wrote: On Sat, Dec 5, 2020 at 12:18 PM Samuel Sieb > wrote: Because there isn't one that can do everything.  With both, you get fast swap, but also the ability to hibernate. To be honest, I have not seen any

Re: F33 BTRFS - Not enough swap space for hibernation

On Sun, Dec 6, 2020 at 11:13 AM Chris Murphy wrote: > https://fedoraproject.org/wiki/Changes/SwapOnZRAM#Detailed_Description > > Let me know if you have questions not answered there. A key point is > this is not a preallocation. Creating a 4G /dev/zram0 device doesn't > reserve or consume 4G.

Re: F33 BTRFS - Not enough swap space for hibernation

On 12/5/20 11:45 PM, Sreyan Chakravarty wrote: On Sat, Dec 5, 2020 at 3:47 AM Samuel Sieb > wrote: But what you are saying is that if I have 8 GB of RAM and let's say 3 GB is actually full of zram swap pages, then, by that logic, applications will have 3GB less RAM to

Re: F33 BTRFS - Not enough swap space for hibernation

On Sun, Dec 6, 2020 at 10:33 AM Tim via users wrote: > On Sat, 2020-12-05 at 17:45 -0700, Chris Murphy wrote: > > There definitely is no free lunch with swap-on-zram, but it helps > > quite a lot for most workloads. > > I'm curious how dedicating some of your RAM for swap, therefore having >

Re: F33 BTRFS - Not enough swap space for hibernation

On Sat, Dec 5, 2020 at 12:18 PM Samuel Sieb wrote: > > Because there isn't one that can do everything. With both, you get fast > swap, but also the ability to hibernate. > To be honest, I have not seen any performance or responsiveness improvement with ZRAM. Hence I am very suspicious when it

Re: F33 BTRFS - Not enough swap space for hibernation

On Sat, Dec 5, 2020 at 11:44 AM Jon LaBadie wrote: > Because your needs are not my needs. > > I have no use for hibernation. > > I may have a need for fast, ram-based swap. > I understand my workflows are not your workflows. But my question is how can you conserve RAM by using more RAM ? That

Re: F33 BTRFS - Not enough swap space for hibernation

On Sat, Dec 5, 2020 at 3:47 AM Samuel Sieb wrote: > It's more like having a TARDIS in your room if you understand that > reference. It takes up some space, but it's bigger on the inside. :-) > Sorry not a Doctor Who fan. It's way too convoluted a plot for me. :-) > Although in this case, it

Re: F33 BTRFS - Not enough swap space for hibernation

On Sat, Dec 5, 2020 at 3:37 AM Ed Greshko wrote: > Well, which "echo" command fails? > > Do these exist? > > /sys/power/disk > /sys/power/state > $ ll /sys/power/disk -rw-r--r--. 1 root root 4096 Dec 6 12:53 /sys/power/disk $ ll /sys/power/state -rw-r--r--. 1 root root 4096 Dec 6 12:53

Re: F33 BTRFS - Not enough swap space for hibernation

On Sat, Dec 5, 2020 at 10:03 PM Tim via users wrote: > > On Sat, 2020-12-05 at 17:45 -0700, Chris Murphy wrote: > > There definitely is no free lunch with swap-on-zram, but it helps > > quite a lot for most workloads. > > I'm curious how dedicating some of your RAM for swap, therefore having >

Re: F33 BTRFS - Not enough swap space for hibernation

On Sat, Dec 5, 2020, at 9:03 PM, Tim via users wrote: > On Sat, 2020-12-05 at 17:45 -0700, Chris Murphy wrote: > > There definitely is no free lunch with swap-on-zram, but it helps > > quite a lot for most workloads. > > I'm curious how dedicating some of your RAM for swap, therefore having >

Re: F33 BTRFS - Not enough swap space for hibernation

On Sat, 2020-12-05 at 17:45 -0700, Chris Murphy wrote: > There definitely is no free lunch with swap-on-zram, but it helps > quite a lot for most workloads. I'm curious how dedicating some of your RAM for swap, therefore having less RAM, is more beneficial than just using your RAM as RAM. --

Re: F33 BTRFS - Not enough swap space for hibernation

On Fri, Dec 4, 2020 at 9:32 AM Sreyan Chakravarty wrote: > > > > On Fri, Dec 4, 2020 at 5:50 PM Qiyu Yan wrote: >> >> >> No > > > How can I shut off the ZRAM swap ? Sreyan, it's OK to be confused and ask a lot of questions. However, Qiyu did go to the trouble to refer you to the swap-on-zram

Re: F33 BTRFS - Not enough swap space for hibernation

On 12/4/20 11:56 AM, Sreyan Chakravarty wrote: On Sat, Dec 5, 2020 at 1:14 AM Ed Greshko > wrote: I'm not advocating doing this.  And, I don't use hibernation. But there is also

Re: F33 BTRFS - Not enough swap space for hibernation

On Sat, Dec 05, 2020 at 01:26:35AM +0530, Sreyan Chakravarty wrote: > On Sat, Dec 5, 2020 at 1:14 AM Ed Greshko wrote: > > > > > I'm not advocating doing this. And, I don't use hibernation. > > > > But there is also > > > > https://fedoraproject.org/wiki/QA:Testcase_SwapOnZRAM_hibernation >

Re: F33 BTRFS - Not enough swap space for hibernation

On 12/4/20 2:04 PM, Sreyan Chakravarty wrote: On Sat, 5 Dec 2020, 3:17 am Samuel Sieb, < zram doesn't take up any significant amount of RAM until it's needed. Then it compresses the swapped data blocks.  I see that I've misconfigured something and ended up with two zram swaps

Re: F33 BTRFS - Not enough swap space for hibernation

On 05/12/2020 04:06, Sreyan Chakravarty wrote: On Sat, Dec 5, 2020 at 1:14 AM Ed Greshko mailto:ed.gres...@greshko.com>> wrote: https://fedoraproject.org/wiki/QA:Testcase_SwapOnZRAM_hibernation BTW, the above does not

Re: F33 BTRFS - Not enough swap space for hibernation

On Sat, 5 Dec 2020, 3:17 am Samuel Sieb, < > > zram doesn't take up any significant amount of RAM until it's needed. > Then it compresses the swapped data blocks. I see that I've > misconfigured something and ended up with two zram swaps active, so I > have almost 17GB of zram defined on my 12GB

Re: F33 BTRFS - Not enough swap space for hibernation

On 12/4/20 1:32 PM, Sreyan Chakravarty wrote: On Sat, 5 Dec 2020, 2:57 am Samuel Sieb, > wrote: I think you missed the point about it being *fast*.  Swapping in RAM is orders of magnitude faster than swapping to disk, even SSD. I thought swap was supposed to be

Re: F33 BTRFS - Not enough swap space for hibernation

On Sat, 5 Dec 2020, 2:57 am Samuel Sieb, wrote: > > > I think you missed the point about it being *fast*. Swapping in RAM is > orders of magnitude faster than swapping to disk, even SSD. > I thought swap was supposed to be used when you were running low on RAM. Then it kind of makes intuitive

Re: F33 BTRFS - Not enough swap space for hibernation

On 12/4/20 11:43 AM, Sreyan Chakravarty wrote: On Sat, Dec 5, 2020 at 1:12 AM Samuel Sieb > wrote: The zram swap is fast and efficient.  But if you use more than that, there is the disk swap to fall back on.  Also, you can only hibernate to disk swap so

Re: F33 BTRFS - Not enough swap space for hibernation

On Sat, Dec 5, 2020 at 1:14 AM Ed Greshko wrote: > https://fedoraproject.org/wiki/QA:Testcase_SwapOnZRAM_hibernation BTW, the above does not work. I get: -bash: echo: write error: No such device -- Regards, Sreyan Chakravarty ___ users

Re: F33 BTRFS - Not enough swap space for hibernation

On Sat, Dec 5, 2020 at 1:14 AM Ed Greshko wrote: > > I'm not advocating doing this. And, I don't use hibernation. > > But there is also > > https://fedoraproject.org/wiki/QA:Testcase_SwapOnZRAM_hibernation One question, why is it considered Hibernation on ZRAM if you have to set up a file

Re: F33 BTRFS - Not enough swap space for hibernation

On 05/12/2020 02:58, Sreyan Chakravarty wrote: On Fri, Dec 4, 2020 at 11:13 PM Patrick O'Callaghan mailto:pocallag...@gmail.com>> wrote: Using swapoff(8) I mean how do I disable it permanently? The swap-on-zram feature can be disabled with sudo touch /etc/systemd/zram-generator.conf

Re: F33 BTRFS - Not enough swap space for hibernation

On Sat, Dec 5, 2020 at 1:12 AM Samuel Sieb wrote: > > The zram swap is fast and efficient. But if you use more than that, > there is the disk swap to fall back on. Also, you can only hibernate to > disk swap so in your case, you need it too. > There is no point to having the zram swap if I

Re: F33 BTRFS - Not enough swap space for hibernation

On 12/4/20 11:27 AM, Sreyan Chakravarty wrote: On Sat, Dec 5, 2020 at 12:37 AM Samuel Sieb > wrote: Why would you want to? What is the point of having 2 types of swap ? The zram swap is fast and efficient. But if you use more than that, there is the disk swap to

Re: F33 BTRFS - Not enough swap space for hibernation

On Sat, Dec 5, 2020 at 12:37 AM Samuel Sieb wrote: > Why would you want to? > What is the point of having 2 types of swap ? -- Regards, Sreyan Chakravarty ___ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to

Re: F33 BTRFS - Not enough swap space for hibernation

On 12/4/20 10:58 AM, Sreyan Chakravarty wrote: On Fri, Dec 4, 2020 at 11:13 PM Patrick O'Callaghan mailto:pocallag...@gmail.com>> wrote: Using swapoff(8) I mean how do I disable it permanently? Why would you want to? ___ users mailing list --

Re: F33 BTRFS - Not enough swap space for hibernation

On Fri, Dec 4, 2020 at 11:13 PM Patrick O'Callaghan wrote: > Using swapoff(8) > I mean how do I disable it permanently? -- Regards, Sreyan Chakravarty ___ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to

Re: F33 BTRFS - Not enough swap space for hibernation

On Fri, Dec 4, 2020 at 11:17 PM Patrick O'Callaghan wrote: > I'm referring to recent messages in which the question of swap on BTRFS > has been discussed. You'll have to search for them, but I'm doing this > myself and it wasn't a big deal to set up. > You mean discussions on this mailing list

Re: F33 BTRFS - Not enough swap space for hibernation

On Fri, 2020-12-04 at 21:53 +0530, Sreyan Chakravarty wrote: > On Fri, Dec 4, 2020 at 6:35 PM Patrick O'Callaghan > wrote: > > > > > > > You seem to be confusing two different things. BTRFS has nothing to do > > with Zram. IIRC previous posters have already pointed to descriptions > > of using

Re: F33 BTRFS - Not enough swap space for hibernation

On Fri, 2020-12-04 at 22:01 +0530, Sreyan Chakravarty wrote: > On Fri, Dec 4, 2020 at 5:50 PM Qiyu Yan wrote: > > > > > No > > > > How can I shut off the ZRAM swap ? Using swapoff(8) poc ___ users mailing list -- users@lists.fedoraproject.org To

Re: F33 BTRFS - Not enough swap space for hibernation

On Fri, Dec 4, 2020 at 5:50 PM Qiyu Yan wrote: > > No > How can I shut off the ZRAM swap ? -- Regards, Sreyan Chakravarty ___ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to users-le...@lists.fedoraproject.org

Re: F33 BTRFS - Not enough swap space for hibernation

On Fri, Dec 4, 2020 at 6:35 PM Patrick O'Callaghan wrote: > > > You seem to be confusing two different things. BTRFS has nothing to do > with Zram. IIRC previous posters have already pointed to descriptions > of using BTRFS for hibernation. Are you referring to this script ?

Re: F33 BTRFS - Not enough swap space for hibernation

On Fri, 2020-12-04 at 18:23 +0530, Sreyan Chakravarty wrote: > On Fri, 4 Dec 2020, 5:56 pm Patrick O'Callaghan, > wrote: > > > > > > > It's in RAM, so not permanent. > > > > > So how is hibernation done in BTRFS? You seem to be confusing two different things. BTRFS has nothing to do with

Re: F33 BTRFS - Not enough swap space for hibernation

On Fri, 4 Dec 2020, 5:56 pm Patrick O'Callaghan, wrote: > > > It's in RAM, so not permanent. > So how is hibernation done in BTRFS? > ___ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to

Re: F33 BTRFS - Not enough swap space for hibernation

On Fri, 4 Dec 2020, 5:50 pm Qiyu Yan, wrote: > No > So how do you do hibernate on BTRFS? > ___ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to users-le...@lists.fedoraproject.org Fedora Code of Conduct:

Re: F33 BTRFS - Not enough swap space for hibernation

On Fri, 2020-12-04 at 17:22 +0530, Sreyan Chakravarty wrote: > On Fri, 4 Dec 2020, 5:15 pm Patrick O'Callaghan, > wrote: > > > > > It's a compressed RAM disk: > > > > https://www.kernel.org/doc/html/latest/admin-guide/blockdev/zram.html > > > > poc > > > > Can it be used for hibernation?

Re: F33 BTRFS - Not enough swap space for hibernation

Sreyan Chakravarty 于2020年12月4日周五 下午7:52写道： > > > > On Fri, 4 Dec 2020, 5:15 pm Patrick O'Callaghan, > wrote: >> >> >> It's a compressed RAM disk: >> >> https://www.kernel.org/doc/html/latest/admin-guide/blockdev/zram.html >> >> poc > > > Can it be used for hibernation? No > >

Re: F33 BTRFS - Not enough swap space for hibernation

On Fri, 4 Dec 2020, 5:15 pm Patrick O'Callaghan, wrote: > > It's a compressed RAM disk: > > https://www.kernel.org/doc/html/latest/admin-guide/blockdev/zram.html > > poc > Can it be used for hibernation? > ___ users mailing list --

Re: F33 BTRFS - Not enough swap space for hibernation

On Fri, 2020-12-04 at 16:16 +0530, Sreyan Chakravarty wrote: > Is ZRAM a file or is it a partition ? It's a compressed RAM disk: https://www.kernel.org/doc/html/latest/admin-guide/blockdev/zram.html poc ___ users mailing list --

Re: F33 BTRFS - Not enough swap space for hibernation

On Fri, Dec 4, 2020 at 3:58 PM Qiyu Yan wrote: > Just execute `swapon` to see a list of all swap devices or files, such > as... > # swapon NAME TYPE SIZE USED PRIO /dev/zram0 partition 3.8G 0B 100 How do I increase the size of zram0 ? I want to have the hibernate facility. >

Re: F33 BTRFS - Not enough swap space for hibernation

Sreyan Chakravarty 于2020年12月4日周五 下午6:07写道： > > On Fri, Dec 4, 2020 at 3:20 PM Qiyu Yan wrote: >> >> Try checking with `swapon`, > > > This is the output I get with `swapon`: > > # swapon -v -f /fedora.swap > swapon: /fedora.swap: found signature [pagesize=4096, signature=swap] > swapon:

Re: F33 BTRFS - Not enough swap space for hibernation

On Fri, Dec 4, 2020 at 3:20 PM Qiyu Yan wrote: > Try checking with `swapon`, This is the output I get with `swapon`: # swapon -v -f /fedora.swap swapon: /fedora.swap: found signature [pagesize=4096, signature=swap] swapon: /fedora.swap: pagesize=4096, swapsize=15032385536, devsize=15032385536

Re: F33 BTRFS - Not enough swap space for hibernation

Try checking with `swapon`, I guess the 4G zram swap makes the difference. Sreyan Chakravarty 于2020年12月4日周五 下午5:45写道： > > Hi, > > Migrated to BTRFS on Fedora 33. > > How do I get hibernate to work with swap files ? > > I did: > touch /fedora.swap > chattr +C /fedora.swap > dd

F33 BTRFS - Not enough swap space for hibernation

Hi, Migrated to BTRFS on Fedora 33. How do I get hibernate to work with swap files ? I did: touch /fedora.swap chattr +C /fedora.swap dd if=/dev/zero of=/fedora.swap bs=1M count=14336 status=progress chmod 600 /fedora.swap mkswap /fedora.swap /etc/fstab entry: